./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.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_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/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_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/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_75050d87-a86e-4345-b24e-be1ec545f49f/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 4232b4ba156e25efb1c3d6c50a48cd7b8244ddaf ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/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_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/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_75050d87-a86e-4345-b24e-be1ec545f49f/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 4232b4ba156e25efb1c3d6c50a48cd7b8244ddaf .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 01:54:30,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:54:30,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:54:30,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:54:30,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:54:30,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:54:30,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:54:30,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:54:30,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:54:30,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:54:30,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:54:30,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:54:30,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:54:30,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:54:30,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:54:30,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:54:30,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:54:30,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:54:30,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:54:30,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:54:30,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:54:30,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:54:30,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:54:30,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:54:30,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:54:30,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:54:30,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:54:30,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:54:30,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:54:30,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:54:30,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:54:30,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:54:30,927 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:54:30,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:54:30,930 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:54:30,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:54:30,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:54:30,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:54:30,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:54:30,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:54:30,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:54:30,935 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 01:54:30,985 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:54:30,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:54:30,986 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:54:30,987 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:54:30,987 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:54:30,987 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:54:30,987 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 01:54:30,987 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:54:30,987 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:54:30,988 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 01:54:30,988 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 01:54:30,988 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:54:30,988 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 01:54:30,988 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 01:54:30,989 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 01:54:30,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:54:30,990 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:54:30,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 01:54:30,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:54:30,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:54:30,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:54:30,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:54:30,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:54:30,991 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:54:30,991 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:54:30,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:54:30,991 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:54:30,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:54:30,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:54:30,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:54:30,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:54:30,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:54:30,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:54:30,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:54:30,993 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 01:54:30,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 01:54:30,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:54:30,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:54:30,994 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:54:30,994 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_75050d87-a86e-4345-b24e-be1ec545f49f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4232b4ba156e25efb1c3d6c50a48cd7b8244ddaf [2021-10-16 01:54:31,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:54:31,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:54:31,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:54:31,260 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:54:31,261 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:54:31,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c [2021-10-16 01:54:31,364 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/data/c07ea8bf7/5b9f78dca7e64be6a7549c76b3210700/FLAGc4796d252 [2021-10-16 01:54:31,915 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:54:31,919 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c [2021-10-16 01:54:31,935 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/data/c07ea8bf7/5b9f78dca7e64be6a7549c76b3210700/FLAGc4796d252 [2021-10-16 01:54:32,190 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/data/c07ea8bf7/5b9f78dca7e64be6a7549c76b3210700 [2021-10-16 01:54:32,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:54:32,193 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:54:32,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:54:32,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:54:32,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:54:32,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:54:32" (1/1) ... [2021-10-16 01:54:32,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54731f6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:32, skipping insertion in model container [2021-10-16 01:54:32,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:54:32" (1/1) ... [2021-10-16 01:54:32,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:54:32,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:54:32,602 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_75050d87-a86e-4345-b24e-be1ec545f49f/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c[14540,14553] [2021-10-16 01:54:32,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:54:32,622 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:54:32,724 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_75050d87-a86e-4345-b24e-be1ec545f49f/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c[14540,14553] [2021-10-16 01:54:32,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:54:32,749 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:54:32,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:32 WrapperNode [2021-10-16 01:54:32,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:54:32,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:54:32,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:54:32,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:54:32,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:32" (1/1) ... [2021-10-16 01:54:32,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:32" (1/1) ... [2021-10-16 01:54:32,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:54:32,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:54:32,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:54:32,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:54:32,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:32" (1/1) ... [2021-10-16 01:54:32,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:32" (1/1) ... [2021-10-16 01:54:32,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:32" (1/1) ... [2021-10-16 01:54:32,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:32" (1/1) ... [2021-10-16 01:54:32,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:32" (1/1) ... [2021-10-16 01:54:32,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:32" (1/1) ... [2021-10-16 01:54:32,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:32" (1/1) ... [2021-10-16 01:54:32,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:54:32,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:54:32,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:54:32,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:54:32,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:32" (1/1) ... [2021-10-16 01:54:32,966 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:54:32,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:54:33,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:54:33,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:54:33,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:54:33,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 01:54:33,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:54:33,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:54:35,070 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 01:54:35,070 INFO L299 CfgBuilder]: Removed 123 assume(true) statements. [2021-10-16 01:54:35,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:35 BoogieIcfgContainer [2021-10-16 01:54:35,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 01:54:35,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 01:54:35,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 01:54:35,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 01:54:35,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:54:32" (1/3) ... [2021-10-16 01:54:35,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32adc140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:54:35, skipping insertion in model container [2021-10-16 01:54:35,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:32" (2/3) ... [2021-10-16 01:54:35,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32adc140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:54:35, skipping insertion in model container [2021-10-16 01:54:35,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:35" (3/3) ... [2021-10-16 01:54:35,082 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c [2021-10-16 01:54:35,088 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 01:54:35,088 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-10-16 01:54:35,139 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 01:54:35,146 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 01:54:35,169 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-16 01:54:35,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 232 states, 208 states have (on average 1.7259615384615385) internal successors, (359), 231 states have internal predecessors, (359), 0 states have call successors, (0), 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 01:54:35,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 01:54:35,196 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:35,197 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:35,198 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:35,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:35,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1906724974, now seen corresponding path program 1 times [2021-10-16 01:54:35,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:35,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171933926] [2021-10-16 01:54:35,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:35,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:35,520 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 01:54:35,521 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:35,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171933926] [2021-10-16 01:54:35,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171933926] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:35,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:35,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 01:54:35,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692000185] [2021-10-16 01:54:35,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:54:35,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:35,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:54:35,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:35,558 INFO L87 Difference]: Start difference. First operand has 232 states, 208 states have (on average 1.7259615384615385) internal successors, (359), 231 states have internal predecessors, (359), 0 states have call successors, (0), 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 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:54:35,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:35,683 INFO L93 Difference]: Finished difference Result 465 states and 720 transitions. [2021-10-16 01:54:35,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:54:35,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-16 01:54:35,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:35,698 INFO L225 Difference]: With dead ends: 465 [2021-10-16 01:54:35,699 INFO L226 Difference]: Without dead ends: 232 [2021-10-16 01:54:35,702 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:35,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-10-16 01:54:35,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 207. [2021-10-16 01:54:35,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 188 states have (on average 1.5904255319148937) internal successors, (299), 206 states have internal predecessors, (299), 0 states have call successors, (0), 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 01:54:35,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 299 transitions. [2021-10-16 01:54:35,757 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 299 transitions. Word has length 11 [2021-10-16 01:54:35,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:35,757 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 299 transitions. [2021-10-16 01:54:35,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:54:35,758 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 299 transitions. [2021-10-16 01:54:35,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 01:54:35,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:35,759 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:35,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 01:54:35,760 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:35,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:35,761 INFO L82 PathProgramCache]: Analyzing trace with hash 214310918, now seen corresponding path program 1 times [2021-10-16 01:54:35,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:35,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232420856] [2021-10-16 01:54:35,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:35,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:35,920 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 01:54:35,920 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:35,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232420856] [2021-10-16 01:54:35,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232420856] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:35,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:35,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 01:54:35,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565185971] [2021-10-16 01:54:35,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:54:35,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:35,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:54:35,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:35,924 INFO L87 Difference]: Start difference. First operand 207 states and 299 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 01:54:35,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:35,987 INFO L93 Difference]: Finished difference Result 435 states and 630 transitions. [2021-10-16 01:54:35,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:54:35,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-16 01:54:35,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:35,991 INFO L225 Difference]: With dead ends: 435 [2021-10-16 01:54:35,991 INFO L226 Difference]: Without dead ends: 229 [2021-10-16 01:54:35,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:35,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-10-16 01:54:36,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 202. [2021-10-16 01:54:36,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 184 states have (on average 1.5815217391304348) internal successors, (291), 201 states have internal predecessors, (291), 0 states have call successors, (0), 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 01:54:36,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 291 transitions. [2021-10-16 01:54:36,031 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 291 transitions. Word has length 13 [2021-10-16 01:54:36,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:36,031 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 291 transitions. [2021-10-16 01:54:36,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 01:54:36,031 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 291 transitions. [2021-10-16 01:54:36,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-16 01:54:36,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:36,033 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:36,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 01:54:36,033 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:36,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:36,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1105514146, now seen corresponding path program 1 times [2021-10-16 01:54:36,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:36,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983028299] [2021-10-16 01:54:36,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:36,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:36,262 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 01:54:36,263 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:36,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983028299] [2021-10-16 01:54:36,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983028299] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:36,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:36,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 01:54:36,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354453640] [2021-10-16 01:54:36,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:54:36,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:36,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:54:36,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:36,279 INFO L87 Difference]: Start difference. First operand 202 states and 291 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 01:54:36,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:36,367 INFO L93 Difference]: Finished difference Result 434 states and 629 transitions. [2021-10-16 01:54:36,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:54:36,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-10-16 01:54:36,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:36,372 INFO L225 Difference]: With dead ends: 434 [2021-10-16 01:54:36,372 INFO L226 Difference]: Without dead ends: 233 [2021-10-16 01:54:36,376 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:36,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-10-16 01:54:36,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 182. [2021-10-16 01:54:36,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 168 states have (on average 1.5416666666666667) internal successors, (259), 181 states have internal predecessors, (259), 0 states have call successors, (0), 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 01:54:36,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 259 transitions. [2021-10-16 01:54:36,400 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 259 transitions. Word has length 17 [2021-10-16 01:54:36,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:36,400 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 259 transitions. [2021-10-16 01:54:36,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 01:54:36,401 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 259 transitions. [2021-10-16 01:54:36,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-16 01:54:36,402 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:36,402 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] [2021-10-16 01:54:36,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 01:54:36,403 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:36,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:36,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1318719946, now seen corresponding path program 1 times [2021-10-16 01:54:36,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:36,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767255425] [2021-10-16 01:54:36,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:36,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:36,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:36,553 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:36,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767255425] [2021-10-16 01:54:36,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767255425] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:36,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:36,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 01:54:36,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711154738] [2021-10-16 01:54:36,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:54:36,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:36,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:54:36,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:36,563 INFO L87 Difference]: Start difference. First operand 182 states and 259 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 01:54:36,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:36,612 INFO L93 Difference]: Finished difference Result 402 states and 573 transitions. [2021-10-16 01:54:36,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:54:36,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-10-16 01:54:36,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:36,614 INFO L225 Difference]: With dead ends: 402 [2021-10-16 01:54:36,615 INFO L226 Difference]: Without dead ends: 221 [2021-10-16 01:54:36,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:36,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-10-16 01:54:36,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 170. [2021-10-16 01:54:36,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 158 states have (on average 1.5253164556962024) internal successors, (241), 169 states have internal predecessors, (241), 0 states have call successors, (0), 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 01:54:36,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 241 transitions. [2021-10-16 01:54:36,634 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 241 transitions. Word has length 21 [2021-10-16 01:54:36,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:36,635 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 241 transitions. [2021-10-16 01:54:36,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 01:54:36,635 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 241 transitions. [2021-10-16 01:54:36,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 01:54:36,638 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:36,638 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] [2021-10-16 01:54:36,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 01:54:36,638 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:36,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:36,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1939962660, now seen corresponding path program 1 times [2021-10-16 01:54:36,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:36,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179666345] [2021-10-16 01:54:36,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:36,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:36,760 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 01:54:36,761 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:36,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179666345] [2021-10-16 01:54:36,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179666345] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:36,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:36,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 01:54:36,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163034759] [2021-10-16 01:54:36,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:54:36,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:36,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:54:36,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:36,764 INFO L87 Difference]: Start difference. First operand 170 states and 241 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 01:54:36,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:36,831 INFO L93 Difference]: Finished difference Result 398 states and 565 transitions. [2021-10-16 01:54:36,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:54:36,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-10-16 01:54:36,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:36,834 INFO L225 Difference]: With dead ends: 398 [2021-10-16 01:54:36,834 INFO L226 Difference]: Without dead ends: 229 [2021-10-16 01:54:36,835 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 01:54:36,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-10-16 01:54:36,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 150. [2021-10-16 01:54:36,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 142 states have (on average 1.471830985915493) internal successors, (209), 149 states have internal predecessors, (209), 0 states have call successors, (0), 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 01:54:36,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 209 transitions. [2021-10-16 01:54:36,848 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 209 transitions. Word has length 22 [2021-10-16 01:54:36,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:36,849 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 209 transitions. [2021-10-16 01:54:36,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 01:54:36,850 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 209 transitions. [2021-10-16 01:54:36,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-16 01:54:36,856 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:36,856 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] [2021-10-16 01:54:36,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 01:54:36,856 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:36,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:36,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1592250678, now seen corresponding path program 1 times [2021-10-16 01:54:36,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:36,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186210433] [2021-10-16 01:54:36,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:36,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:37,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:37,018 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:37,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186210433] [2021-10-16 01:54:37,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186210433] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:37,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:37,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 01:54:37,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036933709] [2021-10-16 01:54:37,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 01:54:37,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:37,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 01:54:37,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 01:54:37,020 INFO L87 Difference]: Start difference. First operand 150 states and 209 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:54:37,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:37,224 INFO L93 Difference]: Finished difference Result 590 states and 818 transitions. [2021-10-16 01:54:37,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 01:54:37,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-16 01:54:37,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:37,228 INFO L225 Difference]: With dead ends: 590 [2021-10-16 01:54:37,228 INFO L226 Difference]: Without dead ends: 441 [2021-10-16 01:54:37,229 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 62.7ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-16 01:54:37,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-10-16 01:54:37,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 204. [2021-10-16 01:54:37,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 196 states have (on average 1.4795918367346939) internal successors, (290), 203 states have internal predecessors, (290), 0 states have call successors, (0), 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 01:54:37,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 290 transitions. [2021-10-16 01:54:37,243 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 290 transitions. Word has length 27 [2021-10-16 01:54:37,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:37,243 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 290 transitions. [2021-10-16 01:54:37,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:54:37,244 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 290 transitions. [2021-10-16 01:54:37,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 01:54:37,245 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:37,245 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] [2021-10-16 01:54:37,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 01:54:37,245 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:37,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:37,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1436880461, now seen corresponding path program 1 times [2021-10-16 01:54:37,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:37,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450636229] [2021-10-16 01:54:37,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:37,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:37,306 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 01:54:37,307 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:37,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450636229] [2021-10-16 01:54:37,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450636229] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:37,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:37,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 01:54:37,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155086819] [2021-10-16 01:54:37,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:54:37,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:37,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:54:37,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:37,309 INFO L87 Difference]: Start difference. First operand 204 states and 290 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 01:54:37,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:37,357 INFO L93 Difference]: Finished difference Result 438 states and 615 transitions. [2021-10-16 01:54:37,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:54:37,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-16 01:54:37,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:37,360 INFO L225 Difference]: With dead ends: 438 [2021-10-16 01:54:37,360 INFO L226 Difference]: Without dead ends: 272 [2021-10-16 01:54:37,361 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:37,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-16 01:54:37,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 188. [2021-10-16 01:54:37,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 182 states have (on average 1.4505494505494505) internal successors, (264), 187 states have internal predecessors, (264), 0 states have call successors, (0), 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 01:54:37,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 264 transitions. [2021-10-16 01:54:37,373 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 264 transitions. Word has length 28 [2021-10-16 01:54:37,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:37,373 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 264 transitions. [2021-10-16 01:54:37,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 01:54:37,373 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 264 transitions. [2021-10-16 01:54:37,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 01:54:37,374 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:37,375 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] [2021-10-16 01:54:37,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-16 01:54:37,375 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:37,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:37,376 INFO L82 PathProgramCache]: Analyzing trace with hash -557300243, now seen corresponding path program 1 times [2021-10-16 01:54:37,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:37,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628194715] [2021-10-16 01:54:37,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:37,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:37,446 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 01:54:37,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:37,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628194715] [2021-10-16 01:54:37,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628194715] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:37,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:37,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 01:54:37,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025708481] [2021-10-16 01:54:37,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:54:37,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:37,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:54:37,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:37,449 INFO L87 Difference]: Start difference. First operand 188 states and 264 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 01:54:37,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:37,488 INFO L93 Difference]: Finished difference Result 346 states and 487 transitions. [2021-10-16 01:54:37,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:54:37,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-16 01:54:37,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:37,490 INFO L225 Difference]: With dead ends: 346 [2021-10-16 01:54:37,490 INFO L226 Difference]: Without dead ends: 209 [2021-10-16 01:54:37,491 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:37,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-10-16 01:54:37,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 184. [2021-10-16 01:54:37,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 179 states have (on average 1.4357541899441342) internal successors, (257), 183 states have internal predecessors, (257), 0 states have call successors, (0), 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 01:54:37,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 257 transitions. [2021-10-16 01:54:37,501 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 257 transitions. Word has length 28 [2021-10-16 01:54:37,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:37,502 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 257 transitions. [2021-10-16 01:54:37,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 01:54:37,502 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 257 transitions. [2021-10-16 01:54:37,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-16 01:54:37,503 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:37,503 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] [2021-10-16 01:54:37,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-16 01:54:37,504 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:37,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:37,504 INFO L82 PathProgramCache]: Analyzing trace with hash 995102888, now seen corresponding path program 1 times [2021-10-16 01:54:37,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:37,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557944656] [2021-10-16 01:54:37,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:37,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:37,608 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 01:54:37,608 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:37,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557944656] [2021-10-16 01:54:37,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557944656] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:37,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:37,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-16 01:54:37,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808640796] [2021-10-16 01:54:37,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 01:54:37,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:37,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 01:54:37,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 01:54:37,611 INFO L87 Difference]: Start difference. First operand 184 states and 257 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:54:37,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:37,954 INFO L93 Difference]: Finished difference Result 815 states and 1111 transitions. [2021-10-16 01:54:37,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 01:54:37,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-16 01:54:37,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:37,959 INFO L225 Difference]: With dead ends: 815 [2021-10-16 01:54:37,960 INFO L226 Difference]: Without dead ends: 664 [2021-10-16 01:54:37,961 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 86.1ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-16 01:54:37,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-10-16 01:54:37,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 230. [2021-10-16 01:54:37,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 225 states have (on average 1.4177777777777778) internal successors, (319), 229 states have internal predecessors, (319), 0 states have call successors, (0), 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 01:54:37,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 319 transitions. [2021-10-16 01:54:37,983 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 319 transitions. Word has length 31 [2021-10-16 01:54:37,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:37,983 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 319 transitions. [2021-10-16 01:54:37,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:54:37,984 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 319 transitions. [2021-10-16 01:54:37,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-16 01:54:37,985 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:37,985 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] [2021-10-16 01:54:37,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-16 01:54:37,985 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:37,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:37,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1241577407, now seen corresponding path program 1 times [2021-10-16 01:54:37,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:37,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045463983] [2021-10-16 01:54:37,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:37,987 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:38,083 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 01:54:38,083 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:38,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045463983] [2021-10-16 01:54:38,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045463983] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:38,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:38,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 01:54:38,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259967008] [2021-10-16 01:54:38,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 01:54:38,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:38,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 01:54:38,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 01:54:38,086 INFO L87 Difference]: Start difference. First operand 230 states and 319 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 01:54:38,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:38,309 INFO L93 Difference]: Finished difference Result 796 states and 1088 transitions. [2021-10-16 01:54:38,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 01:54:38,310 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-10-16 01:54:38,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:38,314 INFO L225 Difference]: With dead ends: 796 [2021-10-16 01:54:38,314 INFO L226 Difference]: Without dead ends: 640 [2021-10-16 01:54:38,315 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 59.5ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-16 01:54:38,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-10-16 01:54:38,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 239. [2021-10-16 01:54:38,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 234 states have (on average 1.4059829059829059) internal successors, (329), 238 states have internal predecessors, (329), 0 states have call successors, (0), 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 01:54:38,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 329 transitions. [2021-10-16 01:54:38,339 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 329 transitions. Word has length 32 [2021-10-16 01:54:38,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:38,340 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 329 transitions. [2021-10-16 01:54:38,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 01:54:38,340 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 329 transitions. [2021-10-16 01:54:38,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-16 01:54:38,341 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:38,341 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] [2021-10-16 01:54:38,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-16 01:54:38,342 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:38,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:38,342 INFO L82 PathProgramCache]: Analyzing trace with hash -939084666, now seen corresponding path program 1 times [2021-10-16 01:54:38,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:38,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561020535] [2021-10-16 01:54:38,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:38,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:38,407 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 01:54:38,407 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:38,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561020535] [2021-10-16 01:54:38,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561020535] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:38,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:38,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 01:54:38,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550263204] [2021-10-16 01:54:38,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 01:54:38,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:38,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 01:54:38,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 01:54:38,410 INFO L87 Difference]: Start difference. First operand 239 states and 329 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 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 01:54:38,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:38,504 INFO L93 Difference]: Finished difference Result 381 states and 529 transitions. [2021-10-16 01:54:38,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 01:54:38,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-10-16 01:54:38,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:38,508 INFO L225 Difference]: With dead ends: 381 [2021-10-16 01:54:38,508 INFO L226 Difference]: Without dead ends: 379 [2021-10-16 01:54:38,508 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 01:54:38,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-10-16 01:54:38,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 241. [2021-10-16 01:54:38,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 236 states have (on average 1.402542372881356) internal successors, (331), 240 states have internal predecessors, (331), 0 states have call successors, (0), 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 01:54:38,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 331 transitions. [2021-10-16 01:54:38,545 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 331 transitions. Word has length 32 [2021-10-16 01:54:38,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:38,545 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 331 transitions. [2021-10-16 01:54:38,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 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 01:54:38,546 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 331 transitions. [2021-10-16 01:54:38,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-16 01:54:38,546 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:38,547 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] [2021-10-16 01:54:38,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-16 01:54:38,548 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:38,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:38,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1783201612, now seen corresponding path program 1 times [2021-10-16 01:54:38,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:38,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240192579] [2021-10-16 01:54:38,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:38,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:38,633 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 01:54:38,633 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:38,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240192579] [2021-10-16 01:54:38,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240192579] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:38,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:38,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 01:54:38,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837471339] [2021-10-16 01:54:38,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 01:54:38,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:38,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 01:54:38,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 01:54:38,638 INFO L87 Difference]: Start difference. First operand 241 states and 331 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 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 01:54:38,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:38,745 INFO L93 Difference]: Finished difference Result 711 states and 961 transitions. [2021-10-16 01:54:38,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 01:54:38,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-16 01:54:38,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:38,749 INFO L225 Difference]: With dead ends: 711 [2021-10-16 01:54:38,749 INFO L226 Difference]: Without dead ends: 534 [2021-10-16 01:54:38,750 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 01:54:38,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-10-16 01:54:38,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 341. [2021-10-16 01:54:38,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 336 states have (on average 1.375) internal successors, (462), 340 states have internal predecessors, (462), 0 states have call successors, (0), 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 01:54:38,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 462 transitions. [2021-10-16 01:54:38,794 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 462 transitions. Word has length 33 [2021-10-16 01:54:38,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:38,794 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 462 transitions. [2021-10-16 01:54:38,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 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 01:54:38,794 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 462 transitions. [2021-10-16 01:54:38,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-16 01:54:38,796 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:38,796 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] [2021-10-16 01:54:38,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-16 01:54:38,796 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:38,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:38,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1079787492, now seen corresponding path program 1 times [2021-10-16 01:54:38,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:38,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249490708] [2021-10-16 01:54:38,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:38,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:38,877 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 01:54:38,878 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:38,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249490708] [2021-10-16 01:54:38,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249490708] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:38,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:38,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 01:54:38,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781425698] [2021-10-16 01:54:38,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 01:54:38,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:38,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 01:54:38,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 01:54:38,881 INFO L87 Difference]: Start difference. First operand 341 states and 462 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 01:54:39,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:39,031 INFO L93 Difference]: Finished difference Result 723 states and 995 transitions. [2021-10-16 01:54:39,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 01:54:39,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-16 01:54:39,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:39,036 INFO L225 Difference]: With dead ends: 723 [2021-10-16 01:54:39,036 INFO L226 Difference]: Without dead ends: 499 [2021-10-16 01:54:39,037 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 38.1ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-16 01:54:39,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-10-16 01:54:39,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 347. [2021-10-16 01:54:39,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 342 states have (on average 1.368421052631579) internal successors, (468), 346 states have internal predecessors, (468), 0 states have call successors, (0), 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 01:54:39,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 468 transitions. [2021-10-16 01:54:39,076 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 468 transitions. Word has length 33 [2021-10-16 01:54:39,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:39,077 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 468 transitions. [2021-10-16 01:54:39,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 01:54:39,077 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 468 transitions. [2021-10-16 01:54:39,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-16 01:54:39,078 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:39,078 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] [2021-10-16 01:54:39,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-16 01:54:39,079 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:39,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:39,080 INFO L82 PathProgramCache]: Analyzing trace with hash 281184463, now seen corresponding path program 1 times [2021-10-16 01:54:39,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:39,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264098017] [2021-10-16 01:54:39,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:39,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:39,148 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 01:54:39,148 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:39,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264098017] [2021-10-16 01:54:39,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264098017] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:39,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:39,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 01:54:39,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730884661] [2021-10-16 01:54:39,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 01:54:39,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:39,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 01:54:39,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 01:54:39,151 INFO L87 Difference]: Start difference. First operand 347 states and 468 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 01:54:39,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:39,251 INFO L93 Difference]: Finished difference Result 784 states and 1044 transitions. [2021-10-16 01:54:39,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 01:54:39,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-16 01:54:39,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:39,256 INFO L225 Difference]: With dead ends: 784 [2021-10-16 01:54:39,256 INFO L226 Difference]: Without dead ends: 464 [2021-10-16 01:54:39,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 01:54:39,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-10-16 01:54:39,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 306. [2021-10-16 01:54:39,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 301 states have (on average 1.3488372093023255) internal successors, (406), 305 states have internal predecessors, (406), 0 states have call successors, (0), 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 01:54:39,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 406 transitions. [2021-10-16 01:54:39,303 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 406 transitions. Word has length 35 [2021-10-16 01:54:39,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:39,304 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 406 transitions. [2021-10-16 01:54:39,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 01:54:39,304 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 406 transitions. [2021-10-16 01:54:39,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-16 01:54:39,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:39,305 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] [2021-10-16 01:54:39,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-16 01:54:39,306 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:39,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:39,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1861719145, now seen corresponding path program 1 times [2021-10-16 01:54:39,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:39,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936276308] [2021-10-16 01:54:39,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:39,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:39,470 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 01:54:39,470 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:39,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936276308] [2021-10-16 01:54:39,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936276308] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:39,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:39,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-16 01:54:39,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339639398] [2021-10-16 01:54:39,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 01:54:39,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:39,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 01:54:39,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 01:54:39,473 INFO L87 Difference]: Start difference. First operand 306 states and 406 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 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 01:54:39,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:39,887 INFO L93 Difference]: Finished difference Result 1500 states and 1953 transitions. [2021-10-16 01:54:39,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 01:54:39,888 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-16 01:54:39,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:39,896 INFO L225 Difference]: With dead ends: 1500 [2021-10-16 01:54:39,896 INFO L226 Difference]: Without dead ends: 1252 [2021-10-16 01:54:39,899 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 80.3ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-16 01:54:39,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-10-16 01:54:39,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 369. [2021-10-16 01:54:39,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 364 states have (on average 1.3214285714285714) internal successors, (481), 368 states have internal predecessors, (481), 0 states have call successors, (0), 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 01:54:39,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 481 transitions. [2021-10-16 01:54:39,967 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 481 transitions. Word has length 35 [2021-10-16 01:54:39,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:39,968 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 481 transitions. [2021-10-16 01:54:39,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 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 01:54:39,968 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 481 transitions. [2021-10-16 01:54:39,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-16 01:54:39,969 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:39,969 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] [2021-10-16 01:54:39,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-16 01:54:39,970 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:39,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:39,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1204858034, now seen corresponding path program 1 times [2021-10-16 01:54:39,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:39,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655092011] [2021-10-16 01:54:39,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:39,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:40,027 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 01:54:40,029 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:40,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655092011] [2021-10-16 01:54:40,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655092011] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:40,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:40,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 01:54:40,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317508161] [2021-10-16 01:54:40,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 01:54:40,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:40,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 01:54:40,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 01:54:40,033 INFO L87 Difference]: Start difference. First operand 369 states and 481 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:54:40,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:40,176 INFO L93 Difference]: Finished difference Result 1049 states and 1367 transitions. [2021-10-16 01:54:40,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 01:54:40,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-16 01:54:40,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:40,181 INFO L225 Difference]: With dead ends: 1049 [2021-10-16 01:54:40,181 INFO L226 Difference]: Without dead ends: 783 [2021-10-16 01:54:40,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 01:54:40,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2021-10-16 01:54:40,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 494. [2021-10-16 01:54:40,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 489 states have (on average 1.2985685071574642) internal successors, (635), 493 states have internal predecessors, (635), 0 states have call successors, (0), 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 01:54:40,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 635 transitions. [2021-10-16 01:54:40,243 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 635 transitions. Word has length 37 [2021-10-16 01:54:40,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:40,243 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 635 transitions. [2021-10-16 01:54:40,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:54:40,244 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 635 transitions. [2021-10-16 01:54:40,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-16 01:54:40,245 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:40,245 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] [2021-10-16 01:54:40,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-16 01:54:40,245 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:40,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:40,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1249636837, now seen corresponding path program 1 times [2021-10-16 01:54:40,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:40,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159194434] [2021-10-16 01:54:40,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:40,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:40,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:40,294 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:40,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159194434] [2021-10-16 01:54:40,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159194434] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:40,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:40,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 01:54:40,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940190976] [2021-10-16 01:54:40,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 01:54:40,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:40,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 01:54:40,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 01:54:40,297 INFO L87 Difference]: Start difference. First operand 494 states and 635 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 01:54:40,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:40,435 INFO L93 Difference]: Finished difference Result 1168 states and 1495 transitions. [2021-10-16 01:54:40,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 01:54:40,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-16 01:54:40,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:40,440 INFO L225 Difference]: With dead ends: 1168 [2021-10-16 01:54:40,440 INFO L226 Difference]: Without dead ends: 706 [2021-10-16 01:54:40,441 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 01:54:40,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-10-16 01:54:40,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 458. [2021-10-16 01:54:40,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 453 states have (on average 1.2869757174392935) internal successors, (583), 457 states have internal predecessors, (583), 0 states have call successors, (0), 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 01:54:40,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 583 transitions. [2021-10-16 01:54:40,499 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 583 transitions. Word has length 40 [2021-10-16 01:54:40,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:40,499 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 583 transitions. [2021-10-16 01:54:40,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 01:54:40,499 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 583 transitions. [2021-10-16 01:54:40,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-16 01:54:40,501 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:40,501 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-16 01:54:40,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-16 01:54:40,501 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:40,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:40,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1348287836, now seen corresponding path program 1 times [2021-10-16 01:54:40,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:40,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431679933] [2021-10-16 01:54:40,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:40,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:40,719 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:40,719 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:40,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431679933] [2021-10-16 01:54:40,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431679933] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 01:54:40,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118761587] [2021-10-16 01:54:40,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:40,720 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 01:54:40,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:54:40,722 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 01:54:40,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 01:54:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:40,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 01:54:40,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:54:41,311 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 01:54:41,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:54:41,545 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 01:54:41,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118761587] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:41,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-16 01:54:41,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [8] total 15 [2021-10-16 01:54:41,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47896886] [2021-10-16 01:54:41,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 01:54:41,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:41,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 01:54:41,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-10-16 01:54:41,550 INFO L87 Difference]: Start difference. First operand 458 states and 583 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 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 01:54:42,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:42,057 INFO L93 Difference]: Finished difference Result 1206 states and 1550 transitions. [2021-10-16 01:54:42,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-16 01:54:42,058 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 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 58 [2021-10-16 01:54:42,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:42,063 INFO L225 Difference]: With dead ends: 1206 [2021-10-16 01:54:42,063 INFO L226 Difference]: Without dead ends: 835 [2021-10-16 01:54:42,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 283.7ms TimeCoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2021-10-16 01:54:42,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2021-10-16 01:54:42,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 468. [2021-10-16 01:54:42,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 463 states have (on average 1.2786177105831533) internal successors, (592), 467 states have internal predecessors, (592), 0 states have call successors, (0), 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 01:54:42,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 592 transitions. [2021-10-16 01:54:42,155 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 592 transitions. Word has length 58 [2021-10-16 01:54:42,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:42,155 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 592 transitions. [2021-10-16 01:54:42,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 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 01:54:42,156 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 592 transitions. [2021-10-16 01:54:42,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-16 01:54:42,157 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:42,157 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-16 01:54:42,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 01:54:42,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-16 01:54:42,373 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:42,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:42,374 INFO L82 PathProgramCache]: Analyzing trace with hash 322903049, now seen corresponding path program 1 times [2021-10-16 01:54:42,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:42,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458153574] [2021-10-16 01:54:42,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:42,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:42,609 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:42,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458153574] [2021-10-16 01:54:42,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458153574] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 01:54:42,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149301850] [2021-10-16 01:54:42,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:42,610 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 01:54:42,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:54:42,613 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 01:54:42,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 01:54:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:42,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 01:54:42,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:54:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:43,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:54:43,401 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:54:43,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149301850] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 01:54:43,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1340873558] [2021-10-16 01:54:43,432 INFO L159 IcfgInterpreter]: Started Sifa with 45 locations of interest [2021-10-16 01:54:43,432 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 01:54:43,438 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 01:54:43,446 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 01:54:43,446 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 01:54:43,618 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:43,626 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 01:54:43,627 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:43,628 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 01:54:43,629 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 01:54:43,630 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:43,630 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 01:54:43,655 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 465 [2021-10-16 01:54:43,786 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 01:54:43,786 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:43,787 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:54:43,788 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:43,788 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:54:43,789 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 01:54:43,814 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 01:54:43,814 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:43,815 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:54:43,815 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:43,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:54:43,816 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-16 01:54:43,840 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 01:54:43,841 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:43,842 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:54:43,842 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:43,843 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:54:43,843 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-16 01:54:43,864 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 01:54:43,864 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:43,865 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:54:43,865 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:43,866 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:54:43,866 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-16 01:54:43,887 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 01:54:43,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:43,888 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:54:43,888 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:43,889 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:54:43,890 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-16 01:54:43,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:54:43,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:54:43,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:54:43,935 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 01:54:43,935 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:43,939 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 01:54:43,940 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:43,941 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 01:54:43,941 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-10-16 01:54:43,962 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 01:54:43,962 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:43,963 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:54:43,963 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:43,964 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:54:43,964 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-10-16 01:54:43,983 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 01:54:43,984 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:43,984 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:54:43,985 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:43,986 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:54:43,986 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-10-16 01:54:44,005 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 01:54:44,006 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:44,006 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:54:44,007 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:44,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:54:44,007 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-10-16 01:54:44,030 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 01:54:44,030 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:44,031 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:54:44,031 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:44,032 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:54:44,032 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-10-16 01:54:44,052 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 01:54:44,053 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:44,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:54:44,054 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:44,055 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:54:44,055 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-10-16 01:54:44,075 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 01:54:44,075 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:44,076 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:54:44,076 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:44,077 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:54:44,077 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-10-16 01:54:44,094 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 01:54:44,095 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:44,095 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:54:44,096 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:44,096 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:54:44,096 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-10-16 01:54:44,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 01:54:44,148 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:54:44,162 INFO L180 QuantifierPusher]: treesize reduction 40, result has 88.0 percent of original size [2021-10-16 01:54:44,172 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 293 [2021-10-16 01:54:44,173 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 01:54:44,173 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 1 variables, input treesize:4051, output treesize:293 [2021-10-16 01:54:44,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 01:54:44,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 01:54:44,393 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_14| 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 01:54:44,397 INFO L168 Benchmark]: Toolchain (without parser) took 12202.94 ms. Allocated memory was 94.4 MB in the beginning and 253.8 MB in the end (delta: 159.4 MB). Free memory was 60.4 MB in the beginning and 87.6 MB in the end (delta: -27.2 MB). Peak memory consumption was 133.6 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:44,397 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory is still 47.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:54:44,397 INFO L168 Benchmark]: CACSL2BoogieTranslator took 551.20 ms. Allocated memory is still 94.4 MB. Free memory was 60.2 MB in the beginning and 63.9 MB in the end (delta: -3.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:44,398 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.53 ms. Allocated memory is still 94.4 MB. Free memory was 63.9 MB in the beginning and 59.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:44,398 INFO L168 Benchmark]: Boogie Preprocessor took 78.12 ms. Allocated memory is still 94.4 MB. Free memory was 58.9 MB in the beginning and 55.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:44,398 INFO L168 Benchmark]: RCFGBuilder took 2134.65 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 55.6 MB in the beginning and 43.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 40.3 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:44,399 INFO L168 Benchmark]: TraceAbstraction took 9320.22 ms. Allocated memory was 119.5 MB in the beginning and 253.8 MB in the end (delta: 134.2 MB). Free memory was 42.9 MB in the beginning and 87.6 MB in the end (delta: -44.7 MB). Peak memory consumption was 89.8 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:44,403 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory is still 47.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 551.20 ms. Allocated memory is still 94.4 MB. Free memory was 60.2 MB in the beginning and 63.9 MB in the end (delta: -3.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 107.53 ms. Allocated memory is still 94.4 MB. Free memory was 63.9 MB in the beginning and 59.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 78.12 ms. Allocated memory is still 94.4 MB. Free memory was 58.9 MB in the beginning and 55.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2134.65 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 55.6 MB in the beginning and 43.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 40.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9320.22 ms. Allocated memory was 119.5 MB in the beginning and 253.8 MB in the end (delta: 134.2 MB). Free memory was 42.9 MB in the beginning and 87.6 MB in the end (delta: -44.7 MB). Peak memory consumption was 89.8 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_14| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_14|: 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 01:54:44,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/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 01:54:47,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:54:47,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:54:47,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:54:47,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:54:47,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:54:47,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:54:47,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:54:47,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:54:47,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:54:47,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:54:47,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:54:47,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:54:47,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:54:47,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:54:47,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:54:47,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:54:47,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:54:47,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:54:47,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:54:47,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:54:47,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:54:47,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:54:47,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:54:47,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:54:47,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:54:47,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:54:47,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:54:47,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:54:47,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:54:47,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:54:47,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:54:47,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:54:47,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:54:47,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:54:47,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:54:47,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:54:47,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:54:47,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:54:47,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:54:47,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:54:47,185 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 01:54:47,236 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:54:47,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:54:47,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:54:47,239 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:54:47,240 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:54:47,240 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:54:47,240 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:54:47,241 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:54:47,241 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:54:47,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:54:47,244 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:54:47,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:54:47,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:54:47,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:54:47,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:54:47,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:54:47,245 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:54:47,246 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 01:54:47,246 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 01:54:47,246 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:54:47,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:54:47,247 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:54:47,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:54:47,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:54:47,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 01:54:47,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:54:47,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:54:47,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:54:47,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:54:47,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:54:47,249 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 01:54:47,249 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 01:54:47,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:54:47,250 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:54:47,250 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:54:47,250 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_75050d87-a86e-4345-b24e-be1ec545f49f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4232b4ba156e25efb1c3d6c50a48cd7b8244ddaf [2021-10-16 01:54:47,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:54:47,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:54:47,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:54:47,653 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:54:47,654 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:54:47,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c [2021-10-16 01:54:47,740 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/data/568b4d64e/b06701f6302244c4b8cebede0e527ac8/FLAG918d9c8e9 [2021-10-16 01:54:48,378 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:54:48,379 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c [2021-10-16 01:54:48,391 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/data/568b4d64e/b06701f6302244c4b8cebede0e527ac8/FLAG918d9c8e9 [2021-10-16 01:54:48,715 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/data/568b4d64e/b06701f6302244c4b8cebede0e527ac8 [2021-10-16 01:54:48,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:54:48,726 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:54:48,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:54:48,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:54:48,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:54:48,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:54:48" (1/1) ... [2021-10-16 01:54:48,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ffe581b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:48, skipping insertion in model container [2021-10-16 01:54:48,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:54:48" (1/1) ... [2021-10-16 01:54:48,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:54:48,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:54:49,162 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_75050d87-a86e-4345-b24e-be1ec545f49f/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c[14540,14553] [2021-10-16 01:54:49,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:54:49,183 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:54:49,254 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_75050d87-a86e-4345-b24e-be1ec545f49f/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c[14540,14553] [2021-10-16 01:54:49,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:54:49,280 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:54:49,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:49 WrapperNode [2021-10-16 01:54:49,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:54:49,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:54:49,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:54:49,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:54:49,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:49" (1/1) ... [2021-10-16 01:54:49,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:49" (1/1) ... [2021-10-16 01:54:49,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:54:49,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:54:49,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:54:49,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:54:49,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:49" (1/1) ... [2021-10-16 01:54:49,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:49" (1/1) ... [2021-10-16 01:54:49,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:49" (1/1) ... [2021-10-16 01:54:49,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:49" (1/1) ... [2021-10-16 01:54:49,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:49" (1/1) ... [2021-10-16 01:54:49,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:49" (1/1) ... [2021-10-16 01:54:49,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:49" (1/1) ... [2021-10-16 01:54:49,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:54:49,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:54:49,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:54:49,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:54:49,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:49" (1/1) ... [2021-10-16 01:54:49,552 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:54:49,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:54:49,594 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:54:49,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:54:49,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 01:54:49,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:54:49,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:54:49,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:54:50,696 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 01:54:50,696 INFO L299 CfgBuilder]: Removed 123 assume(true) statements. [2021-10-16 01:54:50,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:50 BoogieIcfgContainer [2021-10-16 01:54:50,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 01:54:50,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 01:54:50,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 01:54:50,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 01:54:50,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:54:48" (1/3) ... [2021-10-16 01:54:50,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c925fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:54:50, skipping insertion in model container [2021-10-16 01:54:50,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:49" (2/3) ... [2021-10-16 01:54:50,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c925fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:54:50, skipping insertion in model container [2021-10-16 01:54:50,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:50" (3/3) ... [2021-10-16 01:54:50,709 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.4_1.ufo.BOUNDED-10.pals.c [2021-10-16 01:54:50,714 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 01:54:50,715 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-10-16 01:54:50,767 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 01:54:50,772 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 01:54:50,773 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-16 01:54:50,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 295 states, 271 states have (on average 1.7011070110701108) internal successors, (461), 294 states have internal predecessors, (461), 0 states have call successors, (0), 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 01:54:50,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-16 01:54:50,805 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:50,806 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] [2021-10-16 01:54:50,806 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:50,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:50,812 INFO L82 PathProgramCache]: Analyzing trace with hash 349506240, now seen corresponding path program 1 times [2021-10-16 01:54:50,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:54:50,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672352151] [2021-10-16 01:54:50,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:50,828 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:54:50,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:54:50,833 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:54:50,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 01:54:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:51,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 01:54:51,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:54:51,172 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 01:54:51,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:54:51,266 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 01:54:51,267 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:54:51,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672352151] [2021-10-16 01:54:51,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672352151] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:51,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:51,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 01:54:51,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679590217] [2021-10-16 01:54:51,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 01:54:51,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:54:51,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 01:54:51,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 01:54:51,299 INFO L87 Difference]: Start difference. First operand has 295 states, 271 states have (on average 1.7011070110701108) internal successors, (461), 294 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 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 01:54:51,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:51,362 INFO L93 Difference]: Finished difference Result 574 states and 893 transitions. [2021-10-16 01:54:51,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 01:54:51,364 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-16 01:54:51,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:51,378 INFO L225 Difference]: With dead ends: 574 [2021-10-16 01:54:51,379 INFO L226 Difference]: Without dead ends: 291 [2021-10-16 01:54:51,382 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 01:54:51,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-10-16 01:54:51,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2021-10-16 01:54:51,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 268 states have (on average 1.585820895522388) internal successors, (425), 290 states have internal predecessors, (425), 0 states have call successors, (0), 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 01:54:51,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 425 transitions. [2021-10-16 01:54:51,438 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 425 transitions. Word has length 33 [2021-10-16 01:54:51,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:51,438 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 425 transitions. [2021-10-16 01:54:51,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 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 01:54:51,439 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 425 transitions. [2021-10-16 01:54:51,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-16 01:54:51,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:51,441 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] [2021-10-16 01:54:51,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 01:54:51,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:54:51,653 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:51,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:51,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1047215368, now seen corresponding path program 1 times [2021-10-16 01:54:51,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:54:51,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260093971] [2021-10-16 01:54:51,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:51,661 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:54:51,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:54:51,669 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:54:51,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 01:54:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:51,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 01:54:51,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:54:51,968 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 01:54:51,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:54:52,060 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 01:54:52,060 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:54:52,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260093971] [2021-10-16 01:54:52,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260093971] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:52,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:52,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 01:54:52,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132249821] [2021-10-16 01:54:52,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 01:54:52,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:54:52,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 01:54:52,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 01:54:52,080 INFO L87 Difference]: Start difference. First operand 291 states and 425 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 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 01:54:52,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:52,179 INFO L93 Difference]: Finished difference Result 568 states and 824 transitions. [2021-10-16 01:54:52,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 01:54:52,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-16 01:54:52,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:52,195 INFO L225 Difference]: With dead ends: 568 [2021-10-16 01:54:52,196 INFO L226 Difference]: Without dead ends: 291 [2021-10-16 01:54:52,197 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 01:54:52,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-10-16 01:54:52,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2021-10-16 01:54:52,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 268 states have (on average 1.541044776119403) internal successors, (413), 290 states have internal predecessors, (413), 0 states have call successors, (0), 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 01:54:52,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 413 transitions. [2021-10-16 01:54:52,236 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 413 transitions. Word has length 33 [2021-10-16 01:54:52,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:52,236 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 413 transitions. [2021-10-16 01:54:52,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 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 01:54:52,237 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 413 transitions. [2021-10-16 01:54:52,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-16 01:54:52,239 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:52,239 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 01:54:52,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 01:54:52,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:54:52,451 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:52,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:52,452 INFO L82 PathProgramCache]: Analyzing trace with hash -600938825, now seen corresponding path program 1 times [2021-10-16 01:54:52,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:54:52,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1224098801] [2021-10-16 01:54:52,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:52,453 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:54:52,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:54:52,454 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:54:52,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 01:54:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:52,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 01:54:52,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:54:52,713 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 01:54:52,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:54:52,807 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 01:54:52,807 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:54:52,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1224098801] [2021-10-16 01:54:52,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1224098801] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:52,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:52,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 01:54:52,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803125836] [2021-10-16 01:54:52,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:54:52,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:54:52,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:54:52,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:52,814 INFO L87 Difference]: Start difference. First operand 291 states and 413 transitions. 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 01:54:52,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:52,890 INFO L93 Difference]: Finished difference Result 645 states and 924 transitions. [2021-10-16 01:54:52,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:54:52,890 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 01:54:52,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:52,896 INFO L225 Difference]: With dead ends: 645 [2021-10-16 01:54:52,897 INFO L226 Difference]: Without dead ends: 371 [2021-10-16 01:54:52,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 1 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 01:54:52,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-10-16 01:54:52,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 267. [2021-10-16 01:54:52,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 248 states have (on average 1.5201612903225807) internal successors, (377), 266 states have internal predecessors, (377), 0 states have call successors, (0), 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 01:54:52,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 377 transitions. [2021-10-16 01:54:52,951 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 377 transitions. Word has length 44 [2021-10-16 01:54:52,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:52,951 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 377 transitions. [2021-10-16 01:54:52,952 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 01:54:52,953 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 377 transitions. [2021-10-16 01:54:52,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-16 01:54:52,957 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:52,957 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:52,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 01:54:53,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:54:53,172 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:53,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:53,173 INFO L82 PathProgramCache]: Analyzing trace with hash -777659854, now seen corresponding path program 1 times [2021-10-16 01:54:53,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:54:53,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354061106] [2021-10-16 01:54:53,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:53,174 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:54:53,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:54:53,175 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:54:53,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 01:54:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:53,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 01:54:53,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:54:53,645 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 01:54:53,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:54:53,866 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 01:54:53,869 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:54:53,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354061106] [2021-10-16 01:54:53,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354061106] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:53,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:53,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-16 01:54:53,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189027120] [2021-10-16 01:54:53,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 01:54:53,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:54:53,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 01:54:53,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 01:54:53,875 INFO L87 Difference]: Start difference. First operand 267 states and 377 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 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 01:54:54,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:54,353 INFO L93 Difference]: Finished difference Result 1062 states and 1521 transitions. [2021-10-16 01:54:54,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 01:54:54,354 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 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 01:54:54,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:54,360 INFO L225 Difference]: With dead ends: 1062 [2021-10-16 01:54:54,361 INFO L226 Difference]: Without dead ends: 812 [2021-10-16 01:54:54,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-10-16 01:54:54,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2021-10-16 01:54:54,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 324. [2021-10-16 01:54:54,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 305 states have (on average 1.5049180327868852) internal successors, (459), 323 states have internal predecessors, (459), 0 states have call successors, (0), 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 01:54:54,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 459 transitions. [2021-10-16 01:54:54,402 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 459 transitions. Word has length 53 [2021-10-16 01:54:54,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:54,402 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 459 transitions. [2021-10-16 01:54:54,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 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 01:54:54,403 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 459 transitions. [2021-10-16 01:54:54,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-16 01:54:54,410 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:54,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:54,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 01:54:54,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:54:54,622 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:54,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:54,623 INFO L82 PathProgramCache]: Analyzing trace with hash -2135089546, now seen corresponding path program 1 times [2021-10-16 01:54:54,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:54:54,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57339778] [2021-10-16 01:54:54,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:54,624 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:54:54,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:54:54,625 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:54:54,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 01:54:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:54,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 01:54:54,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:54:55,019 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 01:54:55,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:54:55,204 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 01:54:55,204 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:54:55,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57339778] [2021-10-16 01:54:55,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57339778] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:55,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:55,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-16 01:54:55,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355864274] [2021-10-16 01:54:55,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 01:54:55,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:54:55,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 01:54:55,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 01:54:55,207 INFO L87 Difference]: Start difference. First operand 324 states and 459 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 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 01:54:55,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:55,604 INFO L93 Difference]: Finished difference Result 1062 states and 1519 transitions. [2021-10-16 01:54:55,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 01:54:55,605 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 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 54 [2021-10-16 01:54:55,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:55,610 INFO L225 Difference]: With dead ends: 1062 [2021-10-16 01:54:55,610 INFO L226 Difference]: Without dead ends: 812 [2021-10-16 01:54:55,611 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 74.6ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-10-16 01:54:55,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2021-10-16 01:54:55,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 324. [2021-10-16 01:54:55,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 305 states have (on average 1.501639344262295) internal successors, (458), 323 states have internal predecessors, (458), 0 states have call successors, (0), 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 01:54:55,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 458 transitions. [2021-10-16 01:54:55,634 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 458 transitions. Word has length 54 [2021-10-16 01:54:55,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:55,635 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 458 transitions. [2021-10-16 01:54:55,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 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 01:54:55,635 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 458 transitions. [2021-10-16 01:54:55,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-16 01:54:55,636 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:55,637 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:55,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 01:54:55,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:54:55,849 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:55,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:55,850 INFO L82 PathProgramCache]: Analyzing trace with hash 412338309, now seen corresponding path program 1 times [2021-10-16 01:54:55,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:54:55,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838405918] [2021-10-16 01:54:55,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:55,851 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:54:55,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:54:55,852 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:54:55,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 01:54:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:56,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 01:54:56,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:54:56,230 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 01:54:56,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:54:56,347 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 01:54:56,347 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:54:56,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838405918] [2021-10-16 01:54:56,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838405918] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:56,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:56,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 01:54:56,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339705337] [2021-10-16 01:54:56,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:54:56,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:54:56,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:54:56,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:56,350 INFO L87 Difference]: Start difference. First operand 324 states and 458 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 01:54:56,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:56,398 INFO L93 Difference]: Finished difference Result 830 states and 1183 transitions. [2021-10-16 01:54:56,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:54:56,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-10-16 01:54:56,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:56,405 INFO L225 Difference]: With dead ends: 830 [2021-10-16 01:54:56,405 INFO L226 Difference]: Without dead ends: 580 [2021-10-16 01:54:56,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:56,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-10-16 01:54:56,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 386. [2021-10-16 01:54:56,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 367 states have (on average 1.4877384196185286) internal successors, (546), 385 states have internal predecessors, (546), 0 states have call successors, (0), 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 01:54:56,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 546 transitions. [2021-10-16 01:54:56,435 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 546 transitions. Word has length 55 [2021-10-16 01:54:56,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:56,436 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 546 transitions. [2021-10-16 01:54:56,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 01:54:56,437 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 546 transitions. [2021-10-16 01:54:56,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-16 01:54:56,437 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:56,438 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:56,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 01:54:56,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:54:56,650 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:56,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:56,651 INFO L82 PathProgramCache]: Analyzing trace with hash 392369909, now seen corresponding path program 1 times [2021-10-16 01:54:56,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:54:56,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562611725] [2021-10-16 01:54:56,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:56,656 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:54:56,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:54:56,657 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:54:56,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 01:54:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:56,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 01:54:56,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:54:57,038 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 01:54:57,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:54:57,157 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 01:54:57,157 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:54:57,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562611725] [2021-10-16 01:54:57,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562611725] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:57,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:57,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 01:54:57,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929662931] [2021-10-16 01:54:57,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:54:57,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:54:57,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:54:57,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:57,160 INFO L87 Difference]: Start difference. First operand 386 states and 546 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 01:54:57,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:57,223 INFO L93 Difference]: Finished difference Result 920 states and 1308 transitions. [2021-10-16 01:54:57,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:54:57,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-10-16 01:54:57,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:57,228 INFO L225 Difference]: With dead ends: 920 [2021-10-16 01:54:57,228 INFO L226 Difference]: Without dead ends: 637 [2021-10-16 01:54:57,229 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:57,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-10-16 01:54:57,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 419. [2021-10-16 01:54:57,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 400 states have (on average 1.47) internal successors, (588), 418 states have internal predecessors, (588), 0 states have call successors, (0), 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 01:54:57,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 588 transitions. [2021-10-16 01:54:57,268 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 588 transitions. Word has length 56 [2021-10-16 01:54:57,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:57,268 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 588 transitions. [2021-10-16 01:54:57,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 01:54:57,268 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 588 transitions. [2021-10-16 01:54:57,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-16 01:54:57,270 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:57,271 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:57,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 01:54:57,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:54:57,483 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:57,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:57,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1072428279, now seen corresponding path program 1 times [2021-10-16 01:54:57,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:54:57,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136027253] [2021-10-16 01:54:57,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:57,484 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:54:57,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:54:57,485 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:54:57,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 01:54:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:57,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 01:54:57,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:54:57,909 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 01:54:57,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:54:58,015 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 01:54:58,015 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:54:58,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136027253] [2021-10-16 01:54:58,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136027253] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:58,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:58,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 01:54:58,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634093701] [2021-10-16 01:54:58,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 01:54:58,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:54:58,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 01:54:58,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 01:54:58,018 INFO L87 Difference]: Start difference. First operand 419 states and 588 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 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 01:54:58,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:58,070 INFO L93 Difference]: Finished difference Result 725 states and 1028 transitions. [2021-10-16 01:54:58,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 01:54:58,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-10-16 01:54:58,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:58,074 INFO L225 Difference]: With dead ends: 725 [2021-10-16 01:54:58,074 INFO L226 Difference]: Without dead ends: 390 [2021-10-16 01:54:58,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 01:54:58,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-10-16 01:54:58,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2021-10-16 01:54:58,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 371 states have (on average 1.4851752021563343) internal successors, (551), 389 states have internal predecessors, (551), 0 states have call successors, (0), 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 01:54:58,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 551 transitions. [2021-10-16 01:54:58,099 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 551 transitions. Word has length 56 [2021-10-16 01:54:58,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:58,100 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 551 transitions. [2021-10-16 01:54:58,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 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 01:54:58,100 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 551 transitions. [2021-10-16 01:54:58,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-16 01:54:58,101 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:58,101 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:58,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 01:54:58,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:54:58,313 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:58,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:58,314 INFO L82 PathProgramCache]: Analyzing trace with hash 315847341, now seen corresponding path program 1 times [2021-10-16 01:54:58,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:54:58,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2955258] [2021-10-16 01:54:58,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:58,315 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:54:58,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:54:58,316 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:54:58,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 01:54:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:58,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 01:54:58,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:54:58,752 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 01:54:58,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:54:58,870 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 01:54:58,871 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:54:58,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2955258] [2021-10-16 01:54:58,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2955258] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:58,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:58,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 01:54:58,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493294543] [2021-10-16 01:54:58,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:54:58,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:54:58,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:54:58,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:58,875 INFO L87 Difference]: Start difference. First operand 390 states and 551 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 01:54:58,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:58,935 INFO L93 Difference]: Finished difference Result 827 states and 1180 transitions. [2021-10-16 01:54:58,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:54:58,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-10-16 01:54:58,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:58,939 INFO L225 Difference]: With dead ends: 827 [2021-10-16 01:54:58,940 INFO L226 Difference]: Without dead ends: 540 [2021-10-16 01:54:58,940 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 108 SyntacticMatches, 1 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 01:54:58,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-10-16 01:54:58,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 385. [2021-10-16 01:54:58,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 367 states have (on average 1.4795640326975477) internal successors, (543), 384 states have internal predecessors, (543), 0 states have call successors, (0), 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 01:54:58,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 543 transitions. [2021-10-16 01:54:58,970 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 543 transitions. Word has length 56 [2021-10-16 01:54:58,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:58,970 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 543 transitions. [2021-10-16 01:54:58,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 01:54:58,971 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 543 transitions. [2021-10-16 01:54:58,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-16 01:54:58,971 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:58,972 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:58,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 01:54:59,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:54:59,184 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:54:59,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:59,184 INFO L82 PathProgramCache]: Analyzing trace with hash -2107582331, now seen corresponding path program 1 times [2021-10-16 01:54:59,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:54:59,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711467362] [2021-10-16 01:54:59,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:59,185 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:54:59,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:54:59,186 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:54:59,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 01:54:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:59,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 01:54:59,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:54:59,738 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 01:54:59,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:54:59,869 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 01:54:59,869 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:54:59,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711467362] [2021-10-16 01:54:59,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711467362] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:59,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:59,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 01:54:59,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127623281] [2021-10-16 01:54:59,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:54:59,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:54:59,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:54:59,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:59,872 INFO L87 Difference]: Start difference. First operand 385 states and 543 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 01:54:59,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:59,944 INFO L93 Difference]: Finished difference Result 809 states and 1160 transitions. [2021-10-16 01:54:59,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:54:59,944 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 01:54:59,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:59,948 INFO L225 Difference]: With dead ends: 809 [2021-10-16 01:54:59,948 INFO L226 Difference]: Without dead ends: 527 [2021-10-16 01:54:59,949 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 SyntacticMatches, 1 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 01:54:59,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2021-10-16 01:54:59,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 365. [2021-10-16 01:54:59,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 351 states have (on average 1.4558404558404558) internal successors, (511), 364 states have internal predecessors, (511), 0 states have call successors, (0), 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 01:54:59,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 511 transitions. [2021-10-16 01:54:59,978 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 511 transitions. Word has length 60 [2021-10-16 01:54:59,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:59,978 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 511 transitions. [2021-10-16 01:54:59,979 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 01:54:59,979 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 511 transitions. [2021-10-16 01:54:59,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-16 01:54:59,980 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:59,980 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:55:00,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:00,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:00,192 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:55:00,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:00,193 INFO L82 PathProgramCache]: Analyzing trace with hash -22697507, now seen corresponding path program 1 times [2021-10-16 01:55:00,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:00,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922515080] [2021-10-16 01:55:00,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:00,194 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:00,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:00,195 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:00,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 01:55:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:00,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 01:55:00,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:00,706 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 01:55:00,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:00,805 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 01:55:00,805 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:00,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922515080] [2021-10-16 01:55:00,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922515080] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:00,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:00,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 01:55:00,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16037594] [2021-10-16 01:55:00,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:55:00,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:00,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:55:00,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:55:00,809 INFO L87 Difference]: Start difference. First operand 365 states and 511 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:55:00,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:00,868 INFO L93 Difference]: Finished difference Result 748 states and 1058 transitions. [2021-10-16 01:55:00,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:55:00,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-10-16 01:55:00,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:00,871 INFO L225 Difference]: With dead ends: 748 [2021-10-16 01:55:00,872 INFO L226 Difference]: Without dead ends: 486 [2021-10-16 01:55:00,872 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:55:00,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-10-16 01:55:00,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 353. [2021-10-16 01:55:00,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 341 states have (on average 1.4457478005865103) internal successors, (493), 352 states have internal predecessors, (493), 0 states have call successors, (0), 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 01:55:00,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 493 transitions. [2021-10-16 01:55:00,898 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 493 transitions. Word has length 64 [2021-10-16 01:55:00,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:00,899 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 493 transitions. [2021-10-16 01:55:00,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:55:00,899 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 493 transitions. [2021-10-16 01:55:00,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-16 01:55:00,905 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:00,906 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:55:00,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:01,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:01,124 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:55:01,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:01,124 INFO L82 PathProgramCache]: Analyzing trace with hash -417972715, now seen corresponding path program 1 times [2021-10-16 01:55:01,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:01,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823709727] [2021-10-16 01:55:01,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:01,125 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:01,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:01,126 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:01,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 01:55:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:01,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 01:55:01,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:01,737 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 01:55:01,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:01,944 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 01:55:01,944 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:01,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823709727] [2021-10-16 01:55:01,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823709727] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:01,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:01,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-16 01:55:01,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420516118] [2021-10-16 01:55:01,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 01:55:01,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:01,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 01:55:01,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 01:55:01,947 INFO L87 Difference]: Start difference. First operand 353 states and 493 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:55:02,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:02,154 INFO L93 Difference]: Finished difference Result 1315 states and 1850 transitions. [2021-10-16 01:55:02,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 01:55:02,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-10-16 01:55:02,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:02,161 INFO L225 Difference]: With dead ends: 1315 [2021-10-16 01:55:02,161 INFO L226 Difference]: Without dead ends: 1065 [2021-10-16 01:55:02,162 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 68.1ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-16 01:55:02,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2021-10-16 01:55:02,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 370. [2021-10-16 01:55:02,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 358 states have (on average 1.4273743016759777) internal successors, (511), 369 states have internal predecessors, (511), 0 states have call successors, (0), 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 01:55:02,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 511 transitions. [2021-10-16 01:55:02,195 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 511 transitions. Word has length 65 [2021-10-16 01:55:02,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:02,196 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 511 transitions. [2021-10-16 01:55:02,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:55:02,196 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 511 transitions. [2021-10-16 01:55:02,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-16 01:55:02,197 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:02,197 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, 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 01:55:02,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:02,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:02,410 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:55:02,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:02,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1586633556, now seen corresponding path program 1 times [2021-10-16 01:55:02,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:02,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830839337] [2021-10-16 01:55:02,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:02,411 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:02,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:02,412 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:02,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-16 01:55:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:02,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 01:55:02,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:02,968 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 01:55:02,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:03,084 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 01:55:03,084 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:03,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830839337] [2021-10-16 01:55:03,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830839337] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:03,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:03,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 01:55:03,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838572770] [2021-10-16 01:55:03,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:55:03,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:03,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:55:03,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:55:03,087 INFO L87 Difference]: Start difference. First operand 370 states and 511 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:55:03,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:03,166 INFO L93 Difference]: Finished difference Result 772 states and 1088 transitions. [2021-10-16 01:55:03,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:55:03,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-16 01:55:03,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:03,170 INFO L225 Difference]: With dead ends: 772 [2021-10-16 01:55:03,170 INFO L226 Difference]: Without dead ends: 522 [2021-10-16 01:55:03,171 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 130 SyntacticMatches, 1 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 01:55:03,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-10-16 01:55:03,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 350. [2021-10-16 01:55:03,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 342 states have (on average 1.4005847953216375) internal successors, (479), 349 states have internal predecessors, (479), 0 states have call successors, (0), 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 01:55:03,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 479 transitions. [2021-10-16 01:55:03,199 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 479 transitions. Word has length 67 [2021-10-16 01:55:03,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:03,199 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 479 transitions. [2021-10-16 01:55:03,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:55:03,199 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 479 transitions. [2021-10-16 01:55:03,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-16 01:55:03,200 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:03,201 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, 1, 1, 1, 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 01:55:03,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:03,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:03,413 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:55:03,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:03,414 INFO L82 PathProgramCache]: Analyzing trace with hash 132586540, now seen corresponding path program 1 times [2021-10-16 01:55:03,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:03,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007063631] [2021-10-16 01:55:03,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:03,414 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:03,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:03,416 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:03,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-16 01:55:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:03,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 01:55:03,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:04,049 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 01:55:04,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:04,173 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 01:55:04,173 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:04,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007063631] [2021-10-16 01:55:04,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007063631] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:04,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:04,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 01:55:04,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411127866] [2021-10-16 01:55:04,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:55:04,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:04,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:55:04,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:55:04,175 INFO L87 Difference]: Start difference. First operand 350 states and 479 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 01:55:04,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:04,250 INFO L93 Difference]: Finished difference Result 729 states and 1012 transitions. [2021-10-16 01:55:04,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:55:04,251 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 71 [2021-10-16 01:55:04,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:04,254 INFO L225 Difference]: With dead ends: 729 [2021-10-16 01:55:04,254 INFO L226 Difference]: Without dead ends: 499 [2021-10-16 01:55:04,255 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:55:04,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-10-16 01:55:04,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 338. [2021-10-16 01:55:04,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 332 states have (on average 1.3885542168674698) internal successors, (461), 337 states have internal predecessors, (461), 0 states have call successors, (0), 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 01:55:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 461 transitions. [2021-10-16 01:55:04,284 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 461 transitions. Word has length 71 [2021-10-16 01:55:04,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:04,285 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 461 transitions. [2021-10-16 01:55:04,285 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 01:55:04,285 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 461 transitions. [2021-10-16 01:55:04,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-16 01:55:04,286 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:04,286 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, 1, 1, 1, 1, 1, 1, 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 01:55:04,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-16 01:55:04,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:04,499 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:55:04,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:04,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1972545423, now seen corresponding path program 1 times [2021-10-16 01:55:04,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:04,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635626493] [2021-10-16 01:55:04,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:04,500 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:04,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:04,501 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:04,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-16 01:55:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:04,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 01:55:04,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:05,179 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 01:55:05,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:05,371 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 01:55:05,371 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:05,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635626493] [2021-10-16 01:55:05,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635626493] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:05,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:05,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-16 01:55:05,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135337401] [2021-10-16 01:55:05,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 01:55:05,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:05,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 01:55:05,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 01:55:05,374 INFO L87 Difference]: Start difference. First operand 338 states and 461 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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 01:55:05,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:05,709 INFO L93 Difference]: Finished difference Result 1405 states and 1936 transitions. [2021-10-16 01:55:05,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 01:55:05,710 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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 74 [2021-10-16 01:55:05,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:05,717 INFO L225 Difference]: With dead ends: 1405 [2021-10-16 01:55:05,717 INFO L226 Difference]: Without dead ends: 1187 [2021-10-16 01:55:05,719 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 66.8ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-10-16 01:55:05,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2021-10-16 01:55:05,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 366. [2021-10-16 01:55:05,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 360 states have (on average 1.3694444444444445) internal successors, (493), 365 states have internal predecessors, (493), 0 states have call successors, (0), 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 01:55:05,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 493 transitions. [2021-10-16 01:55:05,763 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 493 transitions. Word has length 74 [2021-10-16 01:55:05,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:05,764 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 493 transitions. [2021-10-16 01:55:05,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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 01:55:05,764 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 493 transitions. [2021-10-16 01:55:05,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-16 01:55:05,765 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:05,765 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, 1, 1, 1, 1, 1, 1, 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 01:55:05,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:05,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:05,978 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:55:05,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:05,978 INFO L82 PathProgramCache]: Analyzing trace with hash -303657044, now seen corresponding path program 1 times [2021-10-16 01:55:05,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:05,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264531672] [2021-10-16 01:55:05,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:05,979 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:05,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:05,980 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:05,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-16 01:55:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:06,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 01:55:06,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:06,719 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 01:55:06,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:06,938 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 01:55:06,938 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:06,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264531672] [2021-10-16 01:55:06,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264531672] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:06,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:06,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-16 01:55:06,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367316962] [2021-10-16 01:55:06,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 01:55:06,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:06,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 01:55:06,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 01:55:06,940 INFO L87 Difference]: Start difference. First operand 366 states and 493 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 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 01:55:07,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:07,167 INFO L93 Difference]: Finished difference Result 1066 states and 1463 transitions. [2021-10-16 01:55:07,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 01:55:07,167 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-10-16 01:55:07,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:07,173 INFO L225 Difference]: With dead ends: 1066 [2021-10-16 01:55:07,174 INFO L226 Difference]: Without dead ends: 827 [2021-10-16 01:55:07,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 61.4ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-16 01:55:07,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2021-10-16 01:55:07,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 374. [2021-10-16 01:55:07,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 368 states have (on average 1.361413043478261) internal successors, (501), 373 states have internal predecessors, (501), 0 states have call successors, (0), 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 01:55:07,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 501 transitions. [2021-10-16 01:55:07,219 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 501 transitions. Word has length 74 [2021-10-16 01:55:07,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:07,219 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 501 transitions. [2021-10-16 01:55:07,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 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 01:55:07,220 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 501 transitions. [2021-10-16 01:55:07,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-16 01:55:07,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:07,221 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, 1, 1, 1, 1, 1, 1, 1, 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 01:55:07,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:07,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:07,435 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:55:07,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:07,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1045793593, now seen corresponding path program 1 times [2021-10-16 01:55:07,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:07,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790479760] [2021-10-16 01:55:07,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:07,436 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:07,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:07,437 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:07,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-16 01:55:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:07,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 01:55:07,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:08,145 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 01:55:08,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:08,449 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 01:55:08,449 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:08,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790479760] [2021-10-16 01:55:08,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790479760] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:08,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:08,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-16 01:55:08,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469542776] [2021-10-16 01:55:08,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 01:55:08,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:08,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 01:55:08,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 01:55:08,451 INFO L87 Difference]: Start difference. First operand 374 states and 501 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 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 01:55:08,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:08,754 INFO L93 Difference]: Finished difference Result 1290 states and 1764 transitions. [2021-10-16 01:55:08,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 01:55:08,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 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 75 [2021-10-16 01:55:08,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:08,760 INFO L225 Difference]: With dead ends: 1290 [2021-10-16 01:55:08,761 INFO L226 Difference]: Without dead ends: 1051 [2021-10-16 01:55:08,761 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 59.9ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-10-16 01:55:08,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2021-10-16 01:55:08,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 399. [2021-10-16 01:55:08,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 393 states have (on average 1.3435114503816794) internal successors, (528), 398 states have internal predecessors, (528), 0 states have call successors, (0), 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 01:55:08,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 528 transitions. [2021-10-16 01:55:08,814 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 528 transitions. Word has length 75 [2021-10-16 01:55:08,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:08,814 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 528 transitions. [2021-10-16 01:55:08,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 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 01:55:08,815 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 528 transitions. [2021-10-16 01:55:08,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-16 01:55:08,816 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:08,816 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, 1, 1, 1, 1, 1, 1, 1, 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 01:55:08,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:09,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:09,029 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:55:09,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:09,029 INFO L82 PathProgramCache]: Analyzing trace with hash -533178723, now seen corresponding path program 1 times [2021-10-16 01:55:09,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:09,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914132402] [2021-10-16 01:55:09,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:09,030 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:09,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:09,030 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:09,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-16 01:55:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:09,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 01:55:09,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:09,811 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 01:55:09,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:09,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:09,996 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:09,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [914132402] [2021-10-16 01:55:09,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [914132402] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:09,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:09,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 01:55:09,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344663250] [2021-10-16 01:55:09,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 01:55:10,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:10,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 01:55:10,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 01:55:10,001 INFO L87 Difference]: Start difference. First operand 399 states and 528 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 01:55:10,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:10,172 INFO L93 Difference]: Finished difference Result 1069 states and 1425 transitions. [2021-10-16 01:55:10,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 01:55:10,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-10-16 01:55:10,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:10,179 INFO L225 Difference]: With dead ends: 1069 [2021-10-16 01:55:10,180 INFO L226 Difference]: Without dead ends: 816 [2021-10-16 01:55:10,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 01:55:10,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2021-10-16 01:55:10,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 621. [2021-10-16 01:55:10,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 615 states have (on average 1.313821138211382) internal successors, (808), 620 states have internal predecessors, (808), 0 states have call successors, (0), 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 01:55:10,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 808 transitions. [2021-10-16 01:55:10,255 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 808 transitions. Word has length 75 [2021-10-16 01:55:10,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:10,255 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 808 transitions. [2021-10-16 01:55:10,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 01:55:10,256 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 808 transitions. [2021-10-16 01:55:10,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-16 01:55:10,257 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:10,257 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:10,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:10,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:10,471 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:55:10,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:10,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1664992290, now seen corresponding path program 1 times [2021-10-16 01:55:10,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:10,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826300098] [2021-10-16 01:55:10,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:10,472 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:10,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:10,473 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:10,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-16 01:55:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:11,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 01:55:11,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:11,269 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 01:55:11,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:11,431 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 01:55:11,431 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:11,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826300098] [2021-10-16 01:55:11,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826300098] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:11,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:11,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-16 01:55:11,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647628655] [2021-10-16 01:55:11,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 01:55:11,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:11,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 01:55:11,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 01:55:11,434 INFO L87 Difference]: Start difference. First operand 621 states and 808 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 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 01:55:11,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:11,781 INFO L93 Difference]: Finished difference Result 1488 states and 1942 transitions. [2021-10-16 01:55:11,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 01:55:11,782 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 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 77 [2021-10-16 01:55:11,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:11,786 INFO L225 Difference]: With dead ends: 1488 [2021-10-16 01:55:11,786 INFO L226 Difference]: Without dead ends: 924 [2021-10-16 01:55:11,788 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 60.6ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-16 01:55:11,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2021-10-16 01:55:11,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 544. [2021-10-16 01:55:11,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 538 states have (on average 1.3178438661710037) internal successors, (709), 543 states have internal predecessors, (709), 0 states have call successors, (0), 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 01:55:11,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 709 transitions. [2021-10-16 01:55:11,857 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 709 transitions. Word has length 77 [2021-10-16 01:55:11,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:11,858 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 709 transitions. [2021-10-16 01:55:11,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 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 01:55:11,858 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 709 transitions. [2021-10-16 01:55:11,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-16 01:55:11,859 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:11,860 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:11,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:12,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:12,081 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:55:12,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:12,081 INFO L82 PathProgramCache]: Analyzing trace with hash 529404806, now seen corresponding path program 1 times [2021-10-16 01:55:12,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:12,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805545062] [2021-10-16 01:55:12,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:12,082 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:12,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:12,083 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:12,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-16 01:55:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:12,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 01:55:12,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:12,910 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 01:55:12,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:13,180 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 01:55:13,181 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:13,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805545062] [2021-10-16 01:55:13,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805545062] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:13,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:13,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-10-16 01:55:13,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195632070] [2021-10-16 01:55:13,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 01:55:13,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:13,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 01:55:13,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 01:55:13,183 INFO L87 Difference]: Start difference. First operand 544 states and 709 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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 01:55:13,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:13,439 INFO L93 Difference]: Finished difference Result 1668 states and 2266 transitions. [2021-10-16 01:55:13,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 01:55:13,439 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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 77 [2021-10-16 01:55:13,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:13,445 INFO L225 Difference]: With dead ends: 1668 [2021-10-16 01:55:13,445 INFO L226 Difference]: Without dead ends: 1262 [2021-10-16 01:55:13,446 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 65.3ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-10-16 01:55:13,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2021-10-16 01:55:13,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 517. [2021-10-16 01:55:13,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 511 states have (on average 1.3170254403131116) internal successors, (673), 516 states have internal predecessors, (673), 0 states have call successors, (0), 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 01:55:13,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 673 transitions. [2021-10-16 01:55:13,512 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 673 transitions. Word has length 77 [2021-10-16 01:55:13,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:13,512 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 673 transitions. [2021-10-16 01:55:13,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 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 01:55:13,513 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 673 transitions. [2021-10-16 01:55:13,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-16 01:55:13,514 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:13,514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:13,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:13,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:13,730 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:55:13,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:13,730 INFO L82 PathProgramCache]: Analyzing trace with hash 542872594, now seen corresponding path program 1 times [2021-10-16 01:55:13,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:13,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441654648] [2021-10-16 01:55:13,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:13,731 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:13,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:13,732 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:13,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-16 01:55:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:14,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 01:55:14,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:14,598 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 01:55:14,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:14,751 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 01:55:14,752 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:14,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1441654648] [2021-10-16 01:55:14,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1441654648] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:14,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:14,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 01:55:14,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180498839] [2021-10-16 01:55:14,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 01:55:14,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:14,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 01:55:14,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 01:55:14,753 INFO L87 Difference]: Start difference. First operand 517 states and 673 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 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 01:55:14,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:14,921 INFO L93 Difference]: Finished difference Result 1431 states and 1900 transitions. [2021-10-16 01:55:14,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 01:55:14,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-10-16 01:55:14,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:14,927 INFO L225 Difference]: With dead ends: 1431 [2021-10-16 01:55:14,927 INFO L226 Difference]: Without dead ends: 1052 [2021-10-16 01:55:14,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 01:55:14,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2021-10-16 01:55:15,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 715. [2021-10-16 01:55:15,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 709 states have (on average 1.2976022566995769) internal successors, (920), 714 states have internal predecessors, (920), 0 states have call successors, (0), 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 01:55:15,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 920 transitions. [2021-10-16 01:55:15,020 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 920 transitions. Word has length 77 [2021-10-16 01:55:15,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:15,020 INFO L470 AbstractCegarLoop]: Abstraction has 715 states and 920 transitions. [2021-10-16 01:55:15,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 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 01:55:15,021 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 920 transitions. [2021-10-16 01:55:15,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-16 01:55:15,022 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:15,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:15,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:15,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:15,235 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:55:15,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:15,235 INFO L82 PathProgramCache]: Analyzing trace with hash -284584036, now seen corresponding path program 1 times [2021-10-16 01:55:15,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:15,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406868292] [2021-10-16 01:55:15,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:15,236 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:15,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:15,237 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:15,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-16 01:55:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:15,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 01:55:15,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:16,157 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 01:55:16,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:16,331 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 01:55:16,331 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:16,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406868292] [2021-10-16 01:55:16,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406868292] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:16,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:16,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-16 01:55:16,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081100738] [2021-10-16 01:55:16,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 01:55:16,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:16,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 01:55:16,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 01:55:16,332 INFO L87 Difference]: Start difference. First operand 715 states and 920 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 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 01:55:16,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:16,616 INFO L93 Difference]: Finished difference Result 1976 states and 2619 transitions. [2021-10-16 01:55:16,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 01:55:16,617 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-10-16 01:55:16,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:16,625 INFO L225 Difference]: With dead ends: 1976 [2021-10-16 01:55:16,625 INFO L226 Difference]: Without dead ends: 1452 [2021-10-16 01:55:16,626 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-16 01:55:16,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2021-10-16 01:55:16,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 739. [2021-10-16 01:55:16,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 733 states have (on average 1.2919508867667122) internal successors, (947), 738 states have internal predecessors, (947), 0 states have call successors, (0), 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 01:55:16,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 947 transitions. [2021-10-16 01:55:16,721 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 947 transitions. Word has length 78 [2021-10-16 01:55:16,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:16,721 INFO L470 AbstractCegarLoop]: Abstraction has 739 states and 947 transitions. [2021-10-16 01:55:16,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 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 01:55:16,722 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 947 transitions. [2021-10-16 01:55:16,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-16 01:55:16,723 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:16,723 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:16,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:16,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:16,936 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:55:16,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:16,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1325659995, now seen corresponding path program 1 times [2021-10-16 01:55:16,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:16,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1423561753] [2021-10-16 01:55:16,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:16,937 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:16,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:16,938 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:16,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-16 01:55:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:17,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 01:55:17,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:17,898 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 01:55:17,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:18,090 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 01:55:18,090 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:18,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1423561753] [2021-10-16 01:55:18,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1423561753] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:18,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:18,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-16 01:55:18,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210378977] [2021-10-16 01:55:18,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 01:55:18,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:18,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 01:55:18,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 01:55:18,092 INFO L87 Difference]: Start difference. First operand 739 states and 947 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 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 01:55:18,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:18,314 INFO L93 Difference]: Finished difference Result 1904 states and 2531 transitions. [2021-10-16 01:55:18,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 01:55:18,315 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-10-16 01:55:18,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:18,321 INFO L225 Difference]: With dead ends: 1904 [2021-10-16 01:55:18,322 INFO L226 Difference]: Without dead ends: 1380 [2021-10-16 01:55:18,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 39.8ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-16 01:55:18,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2021-10-16 01:55:18,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 749. [2021-10-16 01:55:18,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 743 states have (on average 1.288021534320323) internal successors, (957), 748 states have internal predecessors, (957), 0 states have call successors, (0), 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 01:55:18,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 957 transitions. [2021-10-16 01:55:18,424 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 957 transitions. Word has length 79 [2021-10-16 01:55:18,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:18,424 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 957 transitions. [2021-10-16 01:55:18,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 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 01:55:18,424 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 957 transitions. [2021-10-16 01:55:18,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-16 01:55:18,431 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:18,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:18,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:18,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:18,645 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:55:18,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:18,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1593609901, now seen corresponding path program 1 times [2021-10-16 01:55:18,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:18,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977504163] [2021-10-16 01:55:18,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:18,646 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:18,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:18,647 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:18,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-16 01:55:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:19,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 01:55:19,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:19,658 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 01:55:19,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:19,831 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 01:55:19,831 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:19,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977504163] [2021-10-16 01:55:19,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [977504163] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:19,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:19,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-16 01:55:19,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367974281] [2021-10-16 01:55:19,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 01:55:19,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:19,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 01:55:19,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 01:55:19,833 INFO L87 Difference]: Start difference. First operand 749 states and 957 transitions. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 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 01:55:20,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:20,171 INFO L93 Difference]: Finished difference Result 1798 states and 2329 transitions. [2021-10-16 01:55:20,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 01:55:20,171 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 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 80 [2021-10-16 01:55:20,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:20,177 INFO L225 Difference]: With dead ends: 1798 [2021-10-16 01:55:20,177 INFO L226 Difference]: Without dead ends: 1128 [2021-10-16 01:55:20,178 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 71.1ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-16 01:55:20,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2021-10-16 01:55:20,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 693. [2021-10-16 01:55:20,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 687 states have (on average 1.282387190684134) internal successors, (881), 692 states have internal predecessors, (881), 0 states have call successors, (0), 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 01:55:20,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 881 transitions. [2021-10-16 01:55:20,255 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 881 transitions. Word has length 80 [2021-10-16 01:55:20,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:20,255 INFO L470 AbstractCegarLoop]: Abstraction has 693 states and 881 transitions. [2021-10-16 01:55:20,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 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 01:55:20,255 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 881 transitions. [2021-10-16 01:55:20,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-16 01:55:20,256 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:20,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:20,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:20,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:20,456 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:55:20,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:20,457 INFO L82 PathProgramCache]: Analyzing trace with hash -385203667, now seen corresponding path program 1 times [2021-10-16 01:55:20,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:20,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439700838] [2021-10-16 01:55:20,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:20,457 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:20,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:20,458 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:20,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-16 01:55:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:21,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 01:55:21,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:21,503 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 01:55:21,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:21,758 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 01:55:21,758 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:21,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439700838] [2021-10-16 01:55:21,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439700838] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:21,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:21,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-16 01:55:21,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481350995] [2021-10-16 01:55:21,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 01:55:21,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:21,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 01:55:21,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 01:55:21,760 INFO L87 Difference]: Start difference. First operand 693 states and 881 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 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 01:55:22,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:22,047 INFO L93 Difference]: Finished difference Result 2108 states and 2811 transitions. [2021-10-16 01:55:22,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 01:55:22,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-10-16 01:55:22,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:22,053 INFO L225 Difference]: With dead ends: 2108 [2021-10-16 01:55:22,053 INFO L226 Difference]: Without dead ends: 1584 [2021-10-16 01:55:22,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 44.5ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-16 01:55:22,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-10-16 01:55:22,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 687. [2021-10-16 01:55:22,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 681 states have (on average 1.2848751835535976) internal successors, (875), 686 states have internal predecessors, (875), 0 states have call successors, (0), 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 01:55:22,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 875 transitions. [2021-10-16 01:55:22,148 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 875 transitions. Word has length 83 [2021-10-16 01:55:22,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:22,148 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 875 transitions. [2021-10-16 01:55:22,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 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 01:55:22,148 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 875 transitions. [2021-10-16 01:55:22,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-16 01:55:22,149 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:22,149 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:22,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-10-16 01:55:22,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:22,360 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:55:22,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:22,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1261369472, now seen corresponding path program 1 times [2021-10-16 01:55:22,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:22,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288721189] [2021-10-16 01:55:22,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:22,361 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:22,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:22,362 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:22,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-16 01:55:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:23,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 01:55:23,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:23,395 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 01:55:23,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:23,512 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 01:55:23,512 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:23,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288721189] [2021-10-16 01:55:23,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288721189] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:23,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:23,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 01:55:23,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036140263] [2021-10-16 01:55:23,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:55:23,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:23,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:55:23,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:55:23,514 INFO L87 Difference]: Start difference. First operand 687 states and 875 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 01:55:23,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:23,689 INFO L93 Difference]: Finished difference Result 1337 states and 1754 transitions. [2021-10-16 01:55:23,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:55:23,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-10-16 01:55:23,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:23,694 INFO L225 Difference]: With dead ends: 1337 [2021-10-16 01:55:23,695 INFO L226 Difference]: Without dead ends: 813 [2021-10-16 01:55:23,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:55:23,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2021-10-16 01:55:23,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 683. [2021-10-16 01:55:23,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 678 states have (on average 1.28023598820059) internal successors, (868), 682 states have internal predecessors, (868), 0 states have call successors, (0), 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 01:55:23,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 868 transitions. [2021-10-16 01:55:23,818 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 868 transitions. Word has length 83 [2021-10-16 01:55:23,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:23,818 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 868 transitions. [2021-10-16 01:55:23,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 01:55:23,818 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 868 transitions. [2021-10-16 01:55:23,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-16 01:55:23,819 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:23,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:23,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:24,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:24,033 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:55:24,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:24,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1708909977, now seen corresponding path program 1 times [2021-10-16 01:55:24,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:24,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134203663] [2021-10-16 01:55:24,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:24,034 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:24,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:24,037 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:24,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-16 01:55:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:24,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 01:55:24,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:25,137 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 01:55:25,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:25,265 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 01:55:25,265 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:25,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134203663] [2021-10-16 01:55:25,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134203663] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:25,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:25,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 01:55:25,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765007286] [2021-10-16 01:55:25,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 01:55:25,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:25,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 01:55:25,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 01:55:25,267 INFO L87 Difference]: Start difference. First operand 683 states and 868 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:55:25,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:25,462 INFO L93 Difference]: Finished difference Result 1226 states and 1597 transitions. [2021-10-16 01:55:25,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 01:55:25,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-10-16 01:55:25,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:25,467 INFO L225 Difference]: With dead ends: 1226 [2021-10-16 01:55:25,467 INFO L226 Difference]: Without dead ends: 1224 [2021-10-16 01:55:25,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 19.1ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-16 01:55:25,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2021-10-16 01:55:25,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 685. [2021-10-16 01:55:25,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 680 states have (on average 1.2794117647058822) internal successors, (870), 684 states have internal predecessors, (870), 0 states have call successors, (0), 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 01:55:25,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 870 transitions. [2021-10-16 01:55:25,553 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 870 transitions. Word has length 87 [2021-10-16 01:55:25,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:25,553 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 870 transitions. [2021-10-16 01:55:25,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:55:25,553 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 870 transitions. [2021-10-16 01:55:25,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-16 01:55:25,554 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:25,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:25,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-10-16 01:55:25,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:25,768 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:55:25,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:25,769 INFO L82 PathProgramCache]: Analyzing trace with hash -596332183, now seen corresponding path program 1 times [2021-10-16 01:55:25,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:25,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344445735] [2021-10-16 01:55:25,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:25,769 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:25,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:25,770 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:25,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-16 01:55:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:26,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 01:55:26,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:26,972 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 01:55:26,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:27,235 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 01:55:27,235 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:27,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344445735] [2021-10-16 01:55:27,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344445735] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:55:27,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:55:27,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-16 01:55:27,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9321372] [2021-10-16 01:55:27,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 01:55:27,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:27,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 01:55:27,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-16 01:55:27,237 INFO L87 Difference]: Start difference. First operand 685 states and 870 transitions. Second operand has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 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 01:55:27,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:27,501 INFO L93 Difference]: Finished difference Result 1596 states and 2129 transitions. [2021-10-16 01:55:27,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 01:55:27,501 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 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 88 [2021-10-16 01:55:27,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:27,506 INFO L225 Difference]: With dead ends: 1596 [2021-10-16 01:55:27,506 INFO L226 Difference]: Without dead ends: 1074 [2021-10-16 01:55:27,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 73.2ms TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-16 01:55:27,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2021-10-16 01:55:27,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 691. [2021-10-16 01:55:27,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 686 states have (on average 1.2769679300291545) internal successors, (876), 690 states have internal predecessors, (876), 0 states have call successors, (0), 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 01:55:27,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 876 transitions. [2021-10-16 01:55:27,610 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 876 transitions. Word has length 88 [2021-10-16 01:55:27,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:27,611 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 876 transitions. [2021-10-16 01:55:27,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 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 01:55:27,611 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 876 transitions. [2021-10-16 01:55:27,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-10-16 01:55:27,613 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:27,614 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:27,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:27,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:55:27,827 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:55:27,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:27,828 INFO L82 PathProgramCache]: Analyzing trace with hash -672316026, now seen corresponding path program 1 times [2021-10-16 01:55:27,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:27,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570546643] [2021-10-16 01:55:27,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:27,829 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:27,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:27,830 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:27,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-16 01:55:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:28,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 01:55:28,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:29,559 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:29,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:29,982 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:29,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570546643] [2021-10-16 01:55:29,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570546643] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 01:55:29,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [598110731] [2021-10-16 01:55:29,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:29,982 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 01:55:29,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 01:55:29,984 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 01:55:29,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-10-16 01:55:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:31,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 01:55:31,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:31,930 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:31,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:32,320 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:32,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [598110731] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 01:55:32,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23517937] [2021-10-16 01:55:32,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:32,321 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 01:55:32,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:55:32,322 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 01:55:32,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-16 01:55:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:33,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 01:55:33,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:34,103 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:34,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:34,455 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:34,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23517937] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 01:55:34,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 01:55:34,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 17 [2021-10-16 01:55:34,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645682596] [2021-10-16 01:55:34,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-16 01:55:34,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:34,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-16 01:55:34,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-10-16 01:55:34,457 INFO L87 Difference]: Start difference. First operand 691 states and 876 transitions. Second operand has 18 states, 18 states have (on average 12.944444444444445) internal successors, (233), 17 states have internal predecessors, (233), 0 states have call successors, (0), 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 01:55:36,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:36,385 INFO L93 Difference]: Finished difference Result 2551 states and 3324 transitions. [2021-10-16 01:55:36,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-16 01:55:36,386 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.944444444444445) internal successors, (233), 17 states have internal predecessors, (233), 0 states have call successors, (0), 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 138 [2021-10-16 01:55:36,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:36,395 INFO L225 Difference]: With dead ends: 2551 [2021-10-16 01:55:36,395 INFO L226 Difference]: Without dead ends: 2029 [2021-10-16 01:55:36,397 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 864 GetRequests, 800 SyntacticMatches, 6 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 922.0ms TimeCoverageRelationStatistics Valid=709, Invalid=2831, Unknown=0, NotChecked=0, Total=3540 [2021-10-16 01:55:36,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2021-10-16 01:55:36,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1015. [2021-10-16 01:55:36,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 1010 states have (on average 1.2792079207920792) internal successors, (1292), 1014 states have internal predecessors, (1292), 0 states have call successors, (0), 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 01:55:36,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1292 transitions. [2021-10-16 01:55:36,568 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1292 transitions. Word has length 138 [2021-10-16 01:55:36,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:36,568 INFO L470 AbstractCegarLoop]: Abstraction has 1015 states and 1292 transitions. [2021-10-16 01:55:36,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.944444444444445) internal successors, (233), 17 states have internal predecessors, (233), 0 states have call successors, (0), 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 01:55:36,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1292 transitions. [2021-10-16 01:55:36,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-10-16 01:55:36,571 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:36,571 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 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 01:55:36,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:36,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-10-16 01:55:37,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-10-16 01:55:37,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 01:55:37,178 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:55:37,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:37,178 INFO L82 PathProgramCache]: Analyzing trace with hash 103025318, now seen corresponding path program 1 times [2021-10-16 01:55:37,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:37,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601011197] [2021-10-16 01:55:37,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:37,179 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:37,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:37,180 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:37,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-16 01:55:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:38,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 01:55:38,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:39,201 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:39,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:39,708 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:39,708 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:39,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601011197] [2021-10-16 01:55:39,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601011197] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 01:55:39,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1193467883] [2021-10-16 01:55:39,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:39,709 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 01:55:39,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 01:55:39,711 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 01:55:39,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2021-10-16 01:55:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:41,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 01:55:41,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:41,976 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:41,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:42,331 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:42,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1193467883] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 01:55:42,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301360420] [2021-10-16 01:55:42,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:42,333 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 01:55:42,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:55:42,334 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 01:55:42,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-16 01:55:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:43,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 01:55:43,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:44,397 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:44,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:44,734 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:44,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301360420] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 01:55:44,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 01:55:44,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 17 [2021-10-16 01:55:44,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177452955] [2021-10-16 01:55:44,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-16 01:55:44,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:44,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-16 01:55:44,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-10-16 01:55:44,737 INFO L87 Difference]: Start difference. First operand 1015 states and 1292 transitions. Second operand has 18 states, 18 states have (on average 13.444444444444445) internal successors, (242), 17 states have internal predecessors, (242), 0 states have call successors, (0), 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 01:55:47,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:47,079 INFO L93 Difference]: Finished difference Result 3889 states and 5085 transitions. [2021-10-16 01:55:47,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-16 01:55:47,079 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.444444444444445) internal successors, (242), 17 states have internal predecessors, (242), 0 states have call successors, (0), 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 139 [2021-10-16 01:55:47,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:47,104 INFO L225 Difference]: With dead ends: 3889 [2021-10-16 01:55:47,104 INFO L226 Difference]: Without dead ends: 3112 [2021-10-16 01:55:47,107 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 806 SyntacticMatches, 6 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 909.8ms TimeCoverageRelationStatistics Valid=757, Invalid=3275, Unknown=0, NotChecked=0, Total=4032 [2021-10-16 01:55:47,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3112 states. [2021-10-16 01:55:47,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3112 to 1538. [2021-10-16 01:55:47,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1533 states have (on average 1.2850619699934769) internal successors, (1970), 1537 states have internal predecessors, (1970), 0 states have call successors, (0), 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 01:55:47,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 1970 transitions. [2021-10-16 01:55:47,406 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 1970 transitions. Word has length 139 [2021-10-16 01:55:47,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:47,406 INFO L470 AbstractCegarLoop]: Abstraction has 1538 states and 1970 transitions. [2021-10-16 01:55:47,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.444444444444445) internal successors, (242), 17 states have internal predecessors, (242), 0 states have call successors, (0), 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 01:55:47,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 1970 transitions. [2021-10-16 01:55:47,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-10-16 01:55:47,410 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:47,410 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:47,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:47,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:47,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-10-16 01:55:48,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 01:55:48,017 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:55:48,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:48,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1245800031, now seen corresponding path program 1 times [2021-10-16 01:55:48,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:48,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645300680] [2021-10-16 01:55:48,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:48,019 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:48,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:48,020 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:48,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-16 01:55:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:49,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 01:55:49,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:50,020 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:50,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:50,466 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:50,466 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:55:50,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645300680] [2021-10-16 01:55:50,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645300680] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 01:55:50,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [405533766] [2021-10-16 01:55:50,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:50,467 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 01:55:50,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 01:55:50,468 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 01:55:50,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2021-10-16 01:55:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:52,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 01:55:52,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:52,830 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:52,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:53,202 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:53,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [405533766] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 01:55:53,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281174994] [2021-10-16 01:55:53,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:53,203 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 01:55:53,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:55:53,225 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 01:55:53,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-16 01:55:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:55,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 01:55:55,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:55:55,328 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:55,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:55:55,696 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:55:55,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281174994] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 01:55:55,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 01:55:55,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 11 [2021-10-16 01:55:55,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821566664] [2021-10-16 01:55:55,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 01:55:55,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:55:55,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 01:55:55,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-16 01:55:55,698 INFO L87 Difference]: Start difference. First operand 1538 states and 1970 transitions. Second operand has 12 states, 12 states have (on average 21.25) internal successors, (255), 11 states have internal predecessors, (255), 0 states have call successors, (0), 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 01:55:56,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:55:56,904 INFO L93 Difference]: Finished difference Result 5779 states and 7658 transitions. [2021-10-16 01:55:56,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-16 01:55:56,905 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 21.25) internal successors, (255), 11 states have internal predecessors, (255), 0 states have call successors, (0), 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 140 [2021-10-16 01:55:56,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:55:56,912 INFO L225 Difference]: With dead ends: 5779 [2021-10-16 01:55:56,912 INFO L226 Difference]: Without dead ends: 4573 [2021-10-16 01:55:56,914 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 818 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 257.4ms TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2021-10-16 01:55:56,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4573 states. [2021-10-16 01:55:57,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4573 to 1831. [2021-10-16 01:55:57,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1826 states have (on average 1.2995618838992333) internal successors, (2373), 1830 states have internal predecessors, (2373), 0 states have call successors, (0), 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 01:55:57,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2373 transitions. [2021-10-16 01:55:57,211 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2373 transitions. Word has length 140 [2021-10-16 01:55:57,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:55:57,212 INFO L470 AbstractCegarLoop]: Abstraction has 1831 states and 2373 transitions. [2021-10-16 01:55:57,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.25) internal successors, (255), 11 states have internal predecessors, (255), 0 states have call successors, (0), 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 01:55:57,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2373 transitions. [2021-10-16 01:55:57,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-10-16 01:55:57,219 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:55:57,220 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:57,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-16 01:55:57,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-10-16 01:55:57,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2021-10-16 01:55:57,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 01:55:57,830 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:55:57,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:55:57,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1332154129, now seen corresponding path program 1 times [2021-10-16 01:55:57,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:55:57,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304901742] [2021-10-16 01:55:57,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:55:57,831 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:55:57,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:55:57,832 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:55:57,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-16 01:55:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:55:59,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 01:55:59,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:56:00,090 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:56:00,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:56:00,467 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:56:00,467 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:56:00,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304901742] [2021-10-16 01:56:00,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304901742] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 01:56:00,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [434201463] [2021-10-16 01:56:00,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:56:00,467 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 01:56:00,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 01:56:00,468 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 01:56:00,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2021-10-16 01:56:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:56:02,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 01:56:02,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:56:03,011 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-16 01:56:03,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:56:03,256 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-16 01:56:03,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [434201463] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:56:03,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 01:56:03,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7, 7] total 16 [2021-10-16 01:56:03,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107076282] [2021-10-16 01:56:03,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 01:56:03,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:56:03,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 01:56:03,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-10-16 01:56:03,259 INFO L87 Difference]: Start difference. First operand 1831 states and 2373 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 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 01:56:04,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:56:04,533 INFO L93 Difference]: Finished difference Result 9002 states and 12023 transitions. [2021-10-16 01:56:04,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-16 01:56:04,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 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 141 [2021-10-16 01:56:04,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:56:04,542 INFO L225 Difference]: With dead ends: 9002 [2021-10-16 01:56:04,542 INFO L226 Difference]: Without dead ends: 7503 [2021-10-16 01:56:04,544 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 551 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 191.8ms TimeCoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2021-10-16 01:56:04,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7503 states. [2021-10-16 01:56:04,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7503 to 2250. [2021-10-16 01:56:04,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2250 states, 2245 states have (on average 1.2739420935412027) internal successors, (2860), 2249 states have internal predecessors, (2860), 0 states have call successors, (0), 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 01:56:04,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 2860 transitions. [2021-10-16 01:56:04,956 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 2860 transitions. Word has length 141 [2021-10-16 01:56:04,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:56:04,956 INFO L470 AbstractCegarLoop]: Abstraction has 2250 states and 2860 transitions. [2021-10-16 01:56:04,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 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 01:56:04,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 2860 transitions. [2021-10-16 01:56:04,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-10-16 01:56:04,961 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:56:04,961 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:04,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2021-10-16 01:56:05,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-10-16 01:56:05,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:56:05,369 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:56:05,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:56:05,369 INFO L82 PathProgramCache]: Analyzing trace with hash -190848533, now seen corresponding path program 1 times [2021-10-16 01:56:05,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:56:05,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316448111] [2021-10-16 01:56:05,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:56:05,370 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:56:05,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:56:05,371 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:56:05,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-16 01:56:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:56:07,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 01:56:07,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:56:07,605 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 01:56:07,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:56:07,974 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-16 01:56:07,974 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:56:07,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [316448111] [2021-10-16 01:56:07,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [316448111] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:56:07,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:56:07,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-16 01:56:07,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486741265] [2021-10-16 01:56:07,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 01:56:07,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:56:07,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 01:56:07,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-16 01:56:07,976 INFO L87 Difference]: Start difference. First operand 2250 states and 2860 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 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 01:56:08,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:56:08,714 INFO L93 Difference]: Finished difference Result 6428 states and 8346 transitions. [2021-10-16 01:56:08,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 01:56:08,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 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 141 [2021-10-16 01:56:08,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:56:08,722 INFO L225 Difference]: With dead ends: 6428 [2021-10-16 01:56:08,722 INFO L226 Difference]: Without dead ends: 4490 [2021-10-16 01:56:08,725 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 276 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 43.9ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-16 01:56:08,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4490 states. [2021-10-16 01:56:09,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4490 to 2250. [2021-10-16 01:56:09,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2250 states, 2245 states have (on average 1.2730512249443207) internal successors, (2858), 2249 states have internal predecessors, (2858), 0 states have call successors, (0), 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 01:56:09,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 2858 transitions. [2021-10-16 01:56:09,202 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 2858 transitions. Word has length 141 [2021-10-16 01:56:09,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:56:09,202 INFO L470 AbstractCegarLoop]: Abstraction has 2250 states and 2858 transitions. [2021-10-16 01:56:09,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 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 01:56:09,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 2858 transitions. [2021-10-16 01:56:09,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-10-16 01:56:09,207 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:56:09,207 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:09,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-16 01:56:09,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:56:09,420 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-10-16 01:56:09,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:56:09,421 INFO L82 PathProgramCache]: Analyzing trace with hash 689093620, now seen corresponding path program 1 times [2021-10-16 01:56:09,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:56:09,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148471649] [2021-10-16 01:56:09,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:56:09,422 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:56:09,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:56:09,423 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:56:09,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-16 01:56:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 01:56:11,617 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 01:56:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 01:56:12,384 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-16 01:56:12,384 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 01:56:12,385 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:56:12,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:56:12,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:56:12,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:56:12,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:56:12,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:56:12,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:56:12,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:56:12,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:56:12,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:56:12,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:56:12,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:56:12,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:56:12,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:56:12,390 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:56:12,390 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:56:12,390 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:56:12,390 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:56:12,390 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:56:12,390 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:56:12,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:56:12,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:56:12,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:56:12,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-16 01:56:12,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:56:12,614 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 01:56:12,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:56:12 BoogieIcfgContainer [2021-10-16 01:56:12,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 01:56:12,890 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 01:56:12,890 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 01:56:12,890 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 01:56:12,891 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:50" (3/4) ... [2021-10-16 01:56:12,894 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 01:56:13,228 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 01:56:13,228 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 01:56:13,230 INFO L168 Benchmark]: Toolchain (without parser) took 84502.77 ms. Allocated memory was 48.2 MB in the beginning and 589.3 MB in the end (delta: 541.1 MB). Free memory was 21.7 MB in the beginning and 464.9 MB in the end (delta: -443.3 MB). Peak memory consumption was 395.4 MB. Max. memory is 16.1 GB. [2021-10-16 01:56:13,230 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 48.2 MB. Free memory was 28.1 MB in the beginning and 28.1 MB in the end (delta: 32.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:56:13,231 INFO L168 Benchmark]: CACSL2BoogieTranslator took 548.54 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 21.5 MB in the beginning and 37.3 MB in the end (delta: -15.9 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-10-16 01:56:13,231 INFO L168 Benchmark]: Boogie Procedure Inliner took 128.06 ms. Allocated memory is still 60.8 MB. Free memory was 37.1 MB in the beginning and 32.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 01:56:13,232 INFO L168 Benchmark]: Boogie Preprocessor took 132.32 ms. Allocated memory is still 60.8 MB. Free memory was 32.7 MB in the beginning and 41.1 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2021-10-16 01:56:13,232 INFO L168 Benchmark]: RCFGBuilder took 1155.81 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 41.1 MB in the beginning and 48.3 MB in the end (delta: -7.1 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. [2021-10-16 01:56:13,233 INFO L168 Benchmark]: TraceAbstraction took 82188.05 ms. Allocated memory was 75.5 MB in the beginning and 589.3 MB in the end (delta: 513.8 MB). Free memory was 47.9 MB in the beginning and 200.7 MB in the end (delta: -152.8 MB). Peak memory consumption was 359.3 MB. Max. memory is 16.1 GB. [2021-10-16 01:56:13,237 INFO L168 Benchmark]: Witness Printer took 338.26 ms. Allocated memory is still 589.3 MB. Free memory was 200.7 MB in the beginning and 464.9 MB in the end (delta: -264.2 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2021-10-16 01:56:13,240 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 48.2 MB. Free memory was 28.1 MB in the beginning and 28.1 MB in the end (delta: 32.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 548.54 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 21.5 MB in the beginning and 37.3 MB in the end (delta: -15.9 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 128.06 ms. Allocated memory is still 60.8 MB. Free memory was 37.1 MB in the beginning and 32.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 132.32 ms. Allocated memory is still 60.8 MB. Free memory was 32.7 MB in the beginning and 41.1 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1155.81 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 41.1 MB in the beginning and 48.3 MB in the end (delta: -7.1 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 82188.05 ms. Allocated memory was 75.5 MB in the beginning and 589.3 MB in the end (delta: 513.8 MB). Free memory was 47.9 MB in the beginning and 200.7 MB in the end (delta: -152.8 MB). Peak memory consumption was 359.3 MB. Max. memory is 16.1 GB. * Witness Printer took 338.26 ms. Allocated memory is still 589.3 MB. Free memory was 200.7 MB in the beginning and 464.9 MB in the end (delta: -264.2 MB). Peak memory consumption was 33.6 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 - CounterExampleResult [Line: 611]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] msg_t nomsg = (msg_t )-1; [L25] port_t cs1 ; [L26] int8_t cs1_old ; [L27] int8_t cs1_new ; [L28] port_t cs2 ; [L29] int8_t cs2_old ; [L30] int8_t cs2_new ; [L31] port_t s1s2 ; [L32] int8_t s1s2_old ; [L33] int8_t s1s2_new ; [L34] port_t s1s1 ; [L35] int8_t s1s1_old ; [L36] int8_t s1s1_new ; [L37] port_t s2s1 ; [L38] int8_t s2s1_old ; [L39] int8_t s2s1_new ; [L40] port_t s2s2 ; [L41] int8_t s2s2_old ; [L42] int8_t s2s2_new ; [L43] port_t s1p ; [L44] int8_t s1p_old ; [L45] int8_t s1p_new ; [L46] port_t s2p ; [L47] int8_t s2p_old ; [L48] int8_t s2p_new ; [L51] _Bool side1Failed ; [L52] _Bool side2Failed ; [L53] msg_t side1_written ; [L54] msg_t side2_written ; [L60] static _Bool side1Failed_History_0 ; [L61] static _Bool side1Failed_History_1 ; [L62] static _Bool side1Failed_History_2 ; [L63] static _Bool side2Failed_History_0 ; [L64] static _Bool side2Failed_History_1 ; [L65] static _Bool side2Failed_History_2 ; [L66] static int8_t active_side_History_0 ; [L67] static int8_t active_side_History_1 ; [L68] static int8_t active_side_History_2 ; [L69] static msg_t manual_selection_History_0 ; [L70] static msg_t manual_selection_History_1 ; [L71] static msg_t manual_selection_History_2 ; VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=0, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L534] int c1 ; [L535] int i2 ; [L538] c1 = 0 [L539] side1Failed = __VERIFIER_nondet_bool() [L540] side2Failed = __VERIFIER_nondet_bool() [L541] side1_written = __VERIFIER_nondet_char() [L542] side2_written = __VERIFIER_nondet_char() [L543] side1Failed_History_0 = __VERIFIER_nondet_bool() [L544] side1Failed_History_1 = __VERIFIER_nondet_bool() [L545] side1Failed_History_2 = __VERIFIER_nondet_bool() [L546] side2Failed_History_0 = __VERIFIER_nondet_bool() [L547] side2Failed_History_1 = __VERIFIER_nondet_bool() [L548] side2Failed_History_2 = __VERIFIER_nondet_bool() [L549] active_side_History_0 = __VERIFIER_nondet_char() [L550] active_side_History_1 = __VERIFIER_nondet_char() [L551] active_side_History_2 = __VERIFIER_nondet_char() [L552] manual_selection_History_0 = __VERIFIER_nondet_char() [L553] manual_selection_History_1 = __VERIFIER_nondet_char() [L554] manual_selection_History_2 = __VERIFIER_nondet_char() [L197] COND FALSE !((int )side1Failed_History_0 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L200] COND FALSE !((int )side2Failed_History_0 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L203] COND FALSE !((int )active_side_History_0 != -2) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L206] COND FALSE !((int )manual_selection_History_0 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L209] COND FALSE !((int )side1Failed_History_1 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L212] COND FALSE !((int )side2Failed_History_1 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L215] COND FALSE !((int )active_side_History_1 != -2) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L218] COND FALSE !((int )manual_selection_History_1 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L221] COND FALSE !((int )side1Failed_History_2 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L224] COND FALSE !((int )side2Failed_History_2 != 0) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L227] COND FALSE !((int )active_side_History_2 != -2) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L230] COND FALSE !((int )manual_selection_History_2 != 0) [L233] return (1); VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L555] i2 = init() [L58] COND FALSE !(!cond) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=0, cs2=0, cs2_new=0, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=0, s1s1=0, s1s1_new=0, s1s1_old=0, s1s2=0, s1s2_new=0, s1s2_old=0, s2p=0, s2p_new=0, s2p_old=0, s2s1=0, s2s1_new=0, s2s1_old=0, s2s2=0, s2s2_new=0, s2s2_old=0, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L557] cs1_old = nomsg [L558] cs1_new = nomsg [L559] cs2_old = nomsg [L560] cs2_new = nomsg [L561] s1s2_old = nomsg [L562] s1s2_new = nomsg [L563] s1s1_old = nomsg [L564] s1s1_new = nomsg [L565] s2s1_old = nomsg [L566] s2s1_new = nomsg [L567] s2s2_old = nomsg [L568] s2s2_new = nomsg [L569] s1p_old = nomsg [L570] s1p_new = nomsg [L571] s2p_old = nomsg [L572] s2p_new = nomsg [L573] i2 = 0 VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=255, cs2=0, cs2_new=255, cs2_old=255, manual_selection_History_0=0, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L574] COND TRUE i2 < 10 [L251] msg_t manual_selection ; [L252] char tmp ; [L255] tmp = __VERIFIER_nondet_char() [L256] manual_selection = tmp [L167] manual_selection_History_2 = manual_selection_History_1 [L168] manual_selection_History_1 = manual_selection_History_0 [L169] manual_selection_History_0 = val VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=255, cs2=0, cs2_new=255, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L258] EXPR manual_selection != nomsg && cs1_new == nomsg ? manual_selection : cs1_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=255, cs2=0, cs2_new=255, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L258] cs1_new = manual_selection != nomsg && cs1_new == nomsg ? manual_selection : cs1_new [L259] EXPR manual_selection != nomsg && cs2_new == nomsg ? manual_selection : cs2_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=255, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L259] cs2_new = manual_selection != nomsg && cs2_new == nomsg ? manual_selection : cs2_new [L260] manual_selection = (msg_t )0 VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=4, side1Failed_History_0=0, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L266] int8_t side1 ; [L267] int8_t side2 ; [L268] msg_t manual_selection ; [L269] int8_t next_state ; [L272] side1 = nomsg [L273] side2 = nomsg [L274] manual_selection = (msg_t )0 [L275] side1Failed = __VERIFIER_nondet_bool() [L77] side1Failed_History_2 = side1Failed_History_1 [L78] side1Failed_History_1 = side1Failed_History_0 [L79] side1Failed_History_0 = val VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L277] COND TRUE \read(side1Failed) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L278] EXPR nomsg != nomsg && s1s1_new == nomsg ? nomsg : s1s1_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L278] s1s1_new = nomsg != nomsg && s1s1_new == nomsg ? nomsg : s1s1_new [L279] EXPR nomsg != nomsg && s1s2_new == nomsg ? nomsg : s1s2_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L279] s1s2_new = nomsg != nomsg && s1s2_new == nomsg ? nomsg : s1s2_new [L280] EXPR nomsg != nomsg && s1p_new == nomsg ? nomsg : s1p_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=6, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L280] s1p_new = nomsg != nomsg && s1p_new == nomsg ? nomsg : s1p_new [L281] side1_written = nomsg VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=5, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L323] int8_t side1 ; [L324] int8_t side2 ; [L325] msg_t manual_selection ; [L326] int8_t next_state ; [L329] side1 = nomsg [L330] side2 = nomsg [L331] manual_selection = (msg_t )0 [L332] side2Failed = __VERIFIER_nondet_bool() [L107] side2Failed_History_2 = side2Failed_History_1 [L108] side2Failed_History_1 = side2Failed_History_0 [L109] side2Failed_History_0 = val VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L334] COND FALSE !(\read(side2Failed)) [L341] side1 = s1s2_old [L342] s1s2_old = nomsg [L343] side2 = s2s2_old [L344] s2s2_old = nomsg [L345] manual_selection = cs2_old [L346] cs2_old = nomsg VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L347] COND TRUE (int )side1 == (int )side2 [L348] next_state = (int8_t )0 VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L371] EXPR next_state != nomsg && s2s1_new == nomsg ? next_state : s2s1_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L371] s2s1_new = next_state != nomsg && s2s1_new == nomsg ? next_state : s2s1_new [L372] EXPR next_state != nomsg && s2s2_new == nomsg ? next_state : s2s2_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L372] s2s2_new = next_state != nomsg && s2s2_new == nomsg ? next_state : s2s2_new [L373] EXPR next_state != nomsg && s2p_new == nomsg ? next_state : s2p_new VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=3, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L373] s2p_new = next_state != nomsg && s2p_new == nomsg ? next_state : s2p_new [L374] side2_written = next_state VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L380] int8_t active_side ; [L381] int8_t tmp ; [L382] int8_t side1 ; [L383] int8_t side2 ; [L148] COND TRUE (int )index == 0 [L149] return (active_side_History_0); VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L386] tmp = read_active_side_history((unsigned char)0) [L387] active_side = tmp [L388] side1 = nomsg [L389] side2 = nomsg [L390] side1 = s1p_old [L391] s1p_old = nomsg [L392] side2 = s2p_old [L393] s2p_old = nomsg VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L394] COND FALSE !((int )side1 == 1) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L397] COND FALSE !((int )side2 == 1) VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L400] COND FALSE !((int )side1 == 0) [L407] active_side = (int8_t )0 VAL [active_side_History_0=254, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L137] active_side_History_2 = active_side_History_1 [L138] active_side_History_1 = active_side_History_0 [L139] active_side_History_0 = val VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=64, cs1_old=255, cs2=0, cs2_new=64, cs2_old=255, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=0, s2p_old=255, s2s1=0, s2s1_new=0, s2s1_old=255, s2s2=0, s2s2_new=0, s2s2_old=255, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L580] cs1_old = cs1_new [L581] cs1_new = nomsg [L582] cs2_old = cs2_new [L583] cs2_new = nomsg [L584] s1s2_old = s1s2_new [L585] s1s2_new = nomsg [L586] s1s1_old = s1s1_new [L587] s1s1_new = nomsg [L588] s2s1_old = s2s1_new [L589] s2s1_new = nomsg [L590] s2s2_old = s2s2_new [L591] s2s2_new = nomsg [L592] s1p_old = s1p_new [L593] s1p_new = nomsg [L594] s2p_old = s2p_new [L595] s2p_new = nomsg [L415] int tmp ; [L416] msg_t tmp___0 ; [L417] _Bool tmp___1 ; [L418] _Bool tmp___2 ; [L419] _Bool tmp___3 ; [L420] _Bool tmp___4 ; [L421] int8_t tmp___5 ; [L422] _Bool tmp___6 ; [L423] _Bool tmp___7 ; [L424] _Bool tmp___8 ; [L425] int8_t tmp___9 ; [L426] _Bool tmp___10 ; [L427] _Bool tmp___11 ; [L428] _Bool tmp___12 ; [L429] msg_t tmp___13 ; [L430] _Bool tmp___14 ; [L431] _Bool tmp___15 ; [L432] _Bool tmp___16 ; [L433] _Bool tmp___17 ; [L434] int8_t tmp___18 ; [L435] int8_t tmp___19 ; [L436] int8_t tmp___20 ; VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L439] COND FALSE !(! side1Failed) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L442] COND TRUE ! side2Failed [L443] tmp = 1 VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L58] COND FALSE !(!cond) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L178] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L181] COND TRUE (int )index == 1 [L182] return (manual_selection_History_1); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L448] tmp___0 = read_manual_selection_history((unsigned char)1) [L449] COND TRUE ! tmp___0 [L88] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L91] COND TRUE (int )index == 1 [L92] return (side1Failed_History_1); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L450] tmp___1 = read_side1_failed_history((unsigned char)1) [L451] COND TRUE ! tmp___1 [L88] COND TRUE (int )index == 0 [L89] return (side1Failed_History_0); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L452] tmp___2 = read_side1_failed_history((unsigned char)0) [L453] COND FALSE !(! tmp___2) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L88] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L91] COND TRUE (int )index == 1 [L92] return (side1Failed_History_1); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L478] tmp___7 = read_side1_failed_history((unsigned char)1) [L479] COND FALSE !(\read(tmp___7)) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L88] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L91] COND TRUE (int )index == 1 [L92] return (side1Failed_History_1); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L494] tmp___11 = read_side1_failed_history((unsigned char)1) [L495] COND TRUE ! tmp___11 [L118] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L121] COND TRUE (int )index == 1 [L122] return (side2Failed_History_1); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L496] tmp___12 = read_side2_failed_history((unsigned char)1) [L497] COND FALSE !(\read(tmp___12)) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L148] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L151] COND FALSE !((int )index == 1) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L154] COND TRUE (int )index == 2 [L155] return (active_side_History_2); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L510] tmp___20 = read_active_side_history((unsigned char)2) [L511] COND FALSE !((int )tmp___20 > -2) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L529] return (1); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L596] c1 = check() [L609] COND FALSE !(! arg) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L598] i2 ++ VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=64, manual_selection_History_1=0, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L574] COND TRUE i2 < 10 [L251] msg_t manual_selection ; [L252] char tmp ; [L255] tmp = __VERIFIER_nondet_char() [L256] manual_selection = tmp [L167] manual_selection_History_2 = manual_selection_History_1 [L168] manual_selection_History_1 = manual_selection_History_0 [L169] manual_selection_History_0 = val VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L258] EXPR manual_selection != nomsg && cs1_new == nomsg ? manual_selection : cs1_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L258] cs1_new = manual_selection != nomsg && cs1_new == nomsg ? manual_selection : cs1_new [L259] EXPR manual_selection != nomsg && cs2_new == nomsg ? manual_selection : cs2_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=64, cs2=0, cs2_new=255, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L259] cs2_new = manual_selection != nomsg && cs2_new == nomsg ? manual_selection : cs2_new [L260] manual_selection = (msg_t )0 VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=64, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=128, side1Failed_History_0=128, side1Failed_History_1=0, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L266] int8_t side1 ; [L267] int8_t side2 ; [L268] msg_t manual_selection ; [L269] int8_t next_state ; [L272] side1 = nomsg [L273] side2 = nomsg [L274] manual_selection = (msg_t )0 [L275] side1Failed = __VERIFIER_nondet_bool() [L77] side1Failed_History_2 = side1Failed_History_1 [L78] side1Failed_History_1 = side1Failed_History_0 [L79] side1Failed_History_0 = val VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=64, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=0, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L277] COND FALSE !(\read(side1Failed)) [L284] side1 = s1s1_old [L285] s1s1_old = nomsg [L286] side2 = s2s1_old [L287] s2s1_old = nomsg [L288] manual_selection = cs1_old [L289] cs1_old = nomsg VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L290] COND FALSE !((int )side1 == (int )side2) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L293] COND TRUE (int )side1 == (int )nomsg VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L294] COND TRUE (int )side2 != (int )nomsg [L295] next_state = (int8_t )0 VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L314] EXPR next_state != nomsg && s1s1_new == nomsg ? next_state : s1s1_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=255, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L314] s1s1_new = next_state != nomsg && s1s1_new == nomsg ? next_state : s1s1_new [L315] EXPR next_state != nomsg && s1s2_new == nomsg ? next_state : s1s2_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=255, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L315] s1s2_new = next_state != nomsg && s1s2_new == nomsg ? next_state : s1s2_new [L316] EXPR next_state != nomsg && s1p_new == nomsg ? next_state : s1p_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=255, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L316] s1p_new = next_state != nomsg && s1p_new == nomsg ? next_state : s1p_new [L317] side1_written = next_state VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=0, side2Failed_History_0=0, side2Failed_History_1=0, side2Failed_History_2=0] [L323] int8_t side1 ; [L324] int8_t side2 ; [L325] msg_t manual_selection ; [L326] int8_t next_state ; [L329] side1 = nomsg [L330] side2 = nomsg [L331] manual_selection = (msg_t )0 [L332] side2Failed = __VERIFIER_nondet_bool() [L107] side2Failed_History_2 = side2Failed_History_1 [L108] side2Failed_History_1 = side2Failed_History_0 [L109] side2Failed_History_0 = val VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L334] COND TRUE \read(side2Failed) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L335] EXPR nomsg != nomsg && s2s1_new == nomsg ? nomsg : s2s1_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L335] s2s1_new = nomsg != nomsg && s2s1_new == nomsg ? nomsg : s2s1_new [L336] EXPR nomsg != nomsg && s2s2_new == nomsg ? nomsg : s2s2_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L336] s2s2_new = nomsg != nomsg && s2s2_new == nomsg ? nomsg : s2s2_new [L337] EXPR nomsg != nomsg && s2p_new == nomsg ? nomsg : s2p_new VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=0, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L337] s2p_new = nomsg != nomsg && s2p_new == nomsg ? nomsg : s2p_new [L338] side2_written = nomsg VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L380] int8_t active_side ; [L381] int8_t tmp ; [L382] int8_t side1 ; [L383] int8_t side2 ; [L148] COND TRUE (int )index == 0 [L149] return (active_side_History_0); VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=0, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L386] tmp = read_active_side_history((unsigned char)0) [L387] active_side = tmp [L388] side1 = nomsg [L389] side2 = nomsg [L390] side1 = s1p_old [L391] s1p_old = nomsg [L392] side2 = s2p_old [L393] s2p_old = nomsg VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L394] COND FALSE !((int )side1 == 1) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L397] COND FALSE !((int )side2 == 1) VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L400] COND FALSE !((int )side1 == 0) [L407] active_side = (int8_t )0 VAL [active_side_History_0=0, active_side_History_1=254, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L137] active_side_History_2 = active_side_History_1 [L138] active_side_History_1 = active_side_History_0 [L139] active_side_History_0 = val VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=0, cs1_old=255, cs2=0, cs2_new=0, cs2_old=64, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=0, s1p_old=255, s1s1=0, s1s1_new=0, s1s1_old=255, s1s2=0, s1s2_new=0, s1s2_old=255, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=0, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L580] cs1_old = cs1_new [L581] cs1_new = nomsg [L582] cs2_old = cs2_new [L583] cs2_new = nomsg [L584] s1s2_old = s1s2_new [L585] s1s2_new = nomsg [L586] s1s1_old = s1s1_new [L587] s1s1_new = nomsg [L588] s2s1_old = s2s1_new [L589] s2s1_new = nomsg [L590] s2s2_old = s2s2_new [L591] s2s2_new = nomsg [L592] s1p_old = s1p_new [L593] s1p_new = nomsg [L594] s2p_old = s2p_new [L595] s2p_new = nomsg [L415] int tmp ; [L416] msg_t tmp___0 ; [L417] _Bool tmp___1 ; [L418] _Bool tmp___2 ; [L419] _Bool tmp___3 ; [L420] _Bool tmp___4 ; [L421] int8_t tmp___5 ; [L422] _Bool tmp___6 ; [L423] _Bool tmp___7 ; [L424] _Bool tmp___8 ; [L425] int8_t tmp___9 ; [L426] _Bool tmp___10 ; [L427] _Bool tmp___11 ; [L428] _Bool tmp___12 ; [L429] msg_t tmp___13 ; [L430] _Bool tmp___14 ; [L431] _Bool tmp___15 ; [L432] _Bool tmp___16 ; [L433] _Bool tmp___17 ; [L434] int8_t tmp___18 ; [L435] int8_t tmp___19 ; [L436] int8_t tmp___20 ; VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L439] COND TRUE ! side1Failed [L440] tmp = 1 VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L58] COND FALSE !(!cond) VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L178] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L181] COND TRUE (int )index == 1 [L182] return (manual_selection_History_1); VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L448] tmp___0 = read_manual_selection_history((unsigned char)1) [L449] COND FALSE !(! tmp___0) VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L88] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L91] COND TRUE (int )index == 1 [L92] return (side1Failed_History_1); VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L478] tmp___7 = read_side1_failed_history((unsigned char)1) [L479] COND TRUE \read(tmp___7) [L118] COND FALSE !((int )index == 0) VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L121] COND TRUE (int )index == 1 [L122] return (side2Failed_History_1); VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L480] tmp___8 = read_side2_failed_history((unsigned char)1) [L481] COND TRUE ! tmp___8 [L148] COND TRUE (int )index == 0 [L149] return (active_side_History_0); VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L482] tmp___5 = read_active_side_history((unsigned char)0) [L483] COND TRUE ! ((int )tmp___5 == 2) [L484] return (0); VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L596] c1 = check() [L609] COND TRUE ! arg VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] [L611] reach_error() VAL [active_side_History_0=0, active_side_History_1=0, active_side_History_2=254, cs1=0, cs1_new=255, cs1_old=0, cs2=0, cs2_new=255, cs2_old=0, manual_selection_History_0=0, manual_selection_History_1=64, manual_selection_History_2=0, nomsg=255, s1p=0, s1p_new=255, s1p_old=0, s1s1=0, s1s1_new=255, s1s1_old=0, s1s2=0, s1s2_new=255, s1s2_old=0, s2p=0, s2p_new=255, s2p_old=255, s2s1=0, s2s1_new=255, s2s1_old=255, s2s2=0, s2s2_new=255, s2s2_old=255, side1_written=0, side1Failed=0, side1Failed_History_0=0, side1Failed_History_1=128, side1Failed_History_2=0, side2_written=255, side2Failed=128, side2Failed_History_0=128, side2Failed_History_1=0, side2Failed_History_2=0] - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 611]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 295 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 81847.0ms, OverallIterations: 34, TraceHistogramMax: 2, EmptinessCheckTime: 85.5ms, AutomataDifference: 13250.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14141 SDtfs, 33954 SDslu, 41201 SDs, 0 SdLazy, 5806 SolverSat, 464 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3845.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7246 GetRequests, 6866 SyntacticMatches, 34 SemanticMatches, 346 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 3255.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2250occurred in iteration=32, InterpolantAutomatonStates: 328, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3223.7ms AutomataMinimizationTime, 33 MinimizatonAttempts, 23104 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1151.0ms SsaConstructionTime, 5622.3ms SatisfiabilityAnalysisTime, 19823.2ms InterpolantComputationTime, 3690 NumberOfCodeBlocks, 3690 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 7016 ConstructedInterpolants, 0 QuantifiedInterpolants, 24041 SizeOfPredicates, 120 NumberOfNonLiveVariables, 11655 ConjunctsInSsa, 228 ConjunctsInUnsatCore, 80 InterpolantComputations, 60 PerfectInterpolantSequences, 608/834 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 RESULT: Ultimate proved your program to be incorrect! [2021-10-16 01:56:13,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75050d87-a86e-4345-b24e-be1ec545f49f/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...