./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/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 e45e933f699aab7bcc9592c7af081e2fbc1238f5 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/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 e45e933f699aab7bcc9592c7af081e2fbc1238f5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:05:37,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:05:37,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:05:38,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:05:38,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:05:38,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:05:38,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:05:38,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:05:38,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:05:38,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:05:38,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:05:38,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:05:38,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:05:38,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:05:38,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:05:38,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:05:38,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:05:38,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:05:38,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:05:38,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:05:38,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:05:38,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:05:38,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:05:38,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:05:38,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:05:38,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:05:38,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:05:38,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:05:38,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:05:38,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:05:38,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:05:38,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:05:38,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:05:38,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:05:38,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:05:38,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:05:38,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:05:38,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:05:38,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:05:38,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:05:38,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:05:38,135 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:05:38,166 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:05:38,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:05:38,168 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:05:38,168 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:05:38,169 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:05:38,169 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:05:38,169 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:05:38,170 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:05:38,170 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:05:38,170 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:05:38,170 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:05:38,171 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:05:38,171 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:05:38,172 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:05:38,172 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:05:38,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:05:38,174 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:05:38,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:05:38,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:05:38,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:05:38,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:05:38,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:05:38,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:05:38,176 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:05:38,176 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:05:38,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:05:38,176 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:05:38,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:05:38,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:05:38,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:05:38,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:05:38,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:05:38,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:05:38,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:05:38,179 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:05:38,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:05:38,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:05:38,180 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:05:38,180 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:05:38,180 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e45e933f699aab7bcc9592c7af081e2fbc1238f5 [2021-10-16 02:05:38,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:05:38,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:05:38,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:05:38,516 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:05:38,519 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:05:38,520 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2021-10-16 02:05:38,610 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/data/537c4bd6e/80b77e7edfc7433fa3d3fb844182006c/FLAG1af38d7ef [2021-10-16 02:05:39,283 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:05:39,288 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2021-10-16 02:05:39,317 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/data/537c4bd6e/80b77e7edfc7433fa3d3fb844182006c/FLAG1af38d7ef [2021-10-16 02:05:39,613 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/data/537c4bd6e/80b77e7edfc7433fa3d3fb844182006c [2021-10-16 02:05:39,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:05:39,620 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:05:39,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:05:39,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:05:39,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:05:39,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:05:39" (1/1) ... [2021-10-16 02:05:39,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e891b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:39, skipping insertion in model container [2021-10-16 02:05:39,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:05:39" (1/1) ... [2021-10-16 02:05:39,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:05:39,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:05:39,939 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1551,1564] [2021-10-16 02:05:39,945 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1758,1771] [2021-10-16 02:05:39,948 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2095,2108] [2021-10-16 02:05:39,951 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2296,2309] [2021-10-16 02:05:39,955 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2701,2714] [2021-10-16 02:05:39,958 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2902,2915] [2021-10-16 02:05:39,962 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3228,3241] [2021-10-16 02:05:39,965 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3435,3448] [2021-10-16 02:05:39,971 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3914,3927] [2021-10-16 02:05:39,973 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4118,4131] [2021-10-16 02:05:39,977 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4426,4439] [2021-10-16 02:05:39,980 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4630,4643] [2021-10-16 02:05:39,984 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4995,5008] [2021-10-16 02:05:39,986 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5198,5211] [2021-10-16 02:05:39,989 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5412,5425] [2021-10-16 02:05:39,992 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5616,5629] [2021-10-16 02:05:39,996 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6138,6151] [2021-10-16 02:05:39,999 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6342,6355] [2021-10-16 02:05:40,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:05:40,014 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:05:40,035 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1551,1564] [2021-10-16 02:05:40,038 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1758,1771] [2021-10-16 02:05:40,040 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2095,2108] [2021-10-16 02:05:40,042 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2296,2309] [2021-10-16 02:05:40,045 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2701,2714] [2021-10-16 02:05:40,047 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2902,2915] [2021-10-16 02:05:40,050 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3228,3241] [2021-10-16 02:05:40,053 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3435,3448] [2021-10-16 02:05:40,056 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3914,3927] [2021-10-16 02:05:40,059 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4118,4131] [2021-10-16 02:05:40,062 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4426,4439] [2021-10-16 02:05:40,065 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4630,4643] [2021-10-16 02:05:40,068 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4995,5008] [2021-10-16 02:05:40,084 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5198,5211] [2021-10-16 02:05:40,087 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5412,5425] [2021-10-16 02:05:40,098 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5616,5629] [2021-10-16 02:05:40,102 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6138,6151] [2021-10-16 02:05:40,104 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6342,6355] [2021-10-16 02:05:40,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:05:40,124 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:05:40,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:40 WrapperNode [2021-10-16 02:05:40,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:05:40,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:05:40,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:05:40,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:05:40,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:40" (1/1) ... [2021-10-16 02:05:40,166 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:40" (1/1) ... [2021-10-16 02:05:40,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:05:40,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:05:40,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:05:40,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:05:40,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:40" (1/1) ... [2021-10-16 02:05:40,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:40" (1/1) ... [2021-10-16 02:05:40,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:40" (1/1) ... [2021-10-16 02:05:40,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:40" (1/1) ... [2021-10-16 02:05:40,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:40" (1/1) ... [2021-10-16 02:05:40,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:40" (1/1) ... [2021-10-16 02:05:40,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:40" (1/1) ... [2021-10-16 02:05:40,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:05:40,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:05:40,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:05:40,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:05:40,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:40" (1/1) ... [2021-10-16 02:05:40,289 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:05:40,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:05:40,324 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:05:40,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:05:40,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:05:40,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:05:40,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:05:40,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:05:40,993 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:05:40,993 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-16 02:05:40,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:05:40 BoogieIcfgContainer [2021-10-16 02:05:40,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:05:40,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:05:41,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:05:41,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:05:41,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:05:39" (1/3) ... [2021-10-16 02:05:41,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a5e53a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:05:41, skipping insertion in model container [2021-10-16 02:05:41,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:40" (2/3) ... [2021-10-16 02:05:41,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a5e53a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:05:41, skipping insertion in model container [2021-10-16 02:05:41,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:05:40" (3/3) ... [2021-10-16 02:05:41,008 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i.v+cfa-reducer.c [2021-10-16 02:05:41,015 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:05:41,016 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-10-16 02:05:41,090 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:05:41,105 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:05:41,105 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-10-16 02:05:41,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 61 states have (on average 1.9180327868852458) internal successors, (117), 79 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:05:41,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 02:05:41,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:05:41,136 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:05:41,137 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:05:41,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:05:41,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1091334804, now seen corresponding path program 1 times [2021-10-16 02:05:41,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:05:41,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315367733] [2021-10-16 02:05:41,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:05:41,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:05:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:05:41,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:05:41,449 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:05:41,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315367733] [2021-10-16 02:05:41,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315367733] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:05:41,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:05:41,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:05:41,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361224031] [2021-10-16 02:05:41,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:05:41,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:05:41,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:05:41,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:05:41,498 INFO L87 Difference]: Start difference. First operand has 80 states, 61 states have (on average 1.9180327868852458) internal successors, (117), 79 states have internal predecessors, (117), 0 states have call successors, (0), 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 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:05:41,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:05:41,563 INFO L93 Difference]: Finished difference Result 84 states and 119 transitions. [2021-10-16 02:05:41,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:05:41,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-10-16 02:05:41,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:05:41,577 INFO L225 Difference]: With dead ends: 84 [2021-10-16 02:05:41,578 INFO L226 Difference]: Without dead ends: 75 [2021-10-16 02:05:41,581 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:05:41,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-16 02:05:41,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-10-16 02:05:41,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 74 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 02:05:41,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2021-10-16 02:05:41,626 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 14 [2021-10-16 02:05:41,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:05:41,627 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2021-10-16 02:05:41,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:05:41,627 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2021-10-16 02:05:41,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 02:05:41,628 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:05:41,628 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:05:41,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:05:41,629 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:05:41,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:05:41,630 INFO L82 PathProgramCache]: Analyzing trace with hash 528363536, now seen corresponding path program 1 times [2021-10-16 02:05:41,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:05:41,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466066018] [2021-10-16 02:05:41,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:05:41,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:05:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:05:41,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:05:41,720 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:05:41,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466066018] [2021-10-16 02:05:41,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466066018] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:05:41,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:05:41,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-16 02:05:41,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324177429] [2021-10-16 02:05:41,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:05:41,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:05:41,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:05:41,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:05:41,726 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:05:41,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:05:41,866 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2021-10-16 02:05:41,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:05:41,867 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-16 02:05:41,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:05:41,869 INFO L225 Difference]: With dead ends: 75 [2021-10-16 02:05:41,869 INFO L226 Difference]: Without dead ends: 73 [2021-10-16 02:05:41,870 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 52.2ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:05:41,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-16 02:05:41,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-10-16 02:05:41,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 72 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:05:41,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2021-10-16 02:05:41,887 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 15 [2021-10-16 02:05:41,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:05:41,888 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2021-10-16 02:05:41,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:05:41,888 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2021-10-16 02:05:41,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-16 02:05:41,890 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:05:41,891 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 02:05:41,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:05:41,891 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:05:41,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:05:41,900 INFO L82 PathProgramCache]: Analyzing trace with hash 951344371, now seen corresponding path program 1 times [2021-10-16 02:05:41,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:05:41,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664259660] [2021-10-16 02:05:41,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:05:41,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:05:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:05:41,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:05:41,989 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:05:41,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664259660] [2021-10-16 02:05:41,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664259660] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:05:41,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:05:41,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:05:41,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491255984] [2021-10-16 02:05:41,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:05:41,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:05:41,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:05:41,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:05:41,993 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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 02:05:42,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:05:42,078 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2021-10-16 02:05:42,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:05:42,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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 02:05:42,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:05:42,081 INFO L225 Difference]: With dead ends: 96 [2021-10-16 02:05:42,081 INFO L226 Difference]: Without dead ends: 94 [2021-10-16 02:05:42,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:05:42,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-16 02:05:42,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 71. [2021-10-16 02:05:42,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 70 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 02:05:42,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2021-10-16 02:05:42,094 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 17 [2021-10-16 02:05:42,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:05:42,095 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2021-10-16 02:05:42,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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 02:05:42,096 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2021-10-16 02:05:42,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:05:42,096 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:05:42,097 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:05:42,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:05:42,097 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:05:42,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:05:42,098 INFO L82 PathProgramCache]: Analyzing trace with hash -573091462, now seen corresponding path program 1 times [2021-10-16 02:05:42,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:05:42,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127054782] [2021-10-16 02:05:42,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:05:42,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:05:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:05:42,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:05:42,219 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:05:42,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127054782] [2021-10-16 02:05:42,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127054782] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:05:42,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:05:42,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 02:05:42,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664841883] [2021-10-16 02:05:42,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:05:42,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:05:42,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:05:42,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:05:42,223 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:05:42,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:05:42,381 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2021-10-16 02:05:42,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:05:42,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-16 02:05:42,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:05:42,384 INFO L225 Difference]: With dead ends: 71 [2021-10-16 02:05:42,384 INFO L226 Difference]: Without dead ends: 69 [2021-10-16 02:05:42,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:05:42,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-16 02:05:42,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-10-16 02:05:42,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 55 states have (on average 1.309090909090909) internal successors, (72), 68 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:05:42,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2021-10-16 02:05:42,402 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 18 [2021-10-16 02:05:42,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:05:42,403 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2021-10-16 02:05:42,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:05:42,403 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2021-10-16 02:05:42,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-16 02:05:42,404 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:05:42,404 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 02:05:42,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:05:42,405 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:05:42,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:05:42,406 INFO L82 PathProgramCache]: Analyzing trace with hash -468627622, now seen corresponding path program 1 times [2021-10-16 02:05:42,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:05:42,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627620777] [2021-10-16 02:05:42,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:05:42,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:05:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:05:42,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:05:42,631 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:05:42,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627620777] [2021-10-16 02:05:42,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627620777] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:05:42,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:05:42,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 02:05:42,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961645199] [2021-10-16 02:05:42,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:05:42,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:05:42,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:05:42,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:05:42,635 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 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 02:05:42,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:05:42,863 INFO L93 Difference]: Finished difference Result 136 states and 142 transitions. [2021-10-16 02:05:42,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:05:42,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 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 02:05:42,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:05:42,866 INFO L225 Difference]: With dead ends: 136 [2021-10-16 02:05:42,867 INFO L226 Difference]: Without dead ends: 134 [2021-10-16 02:05:42,868 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 81.8ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:05:42,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-16 02:05:42,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 72. [2021-10-16 02:05:42,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 71 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 02:05:42,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2021-10-16 02:05:42,883 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 21 [2021-10-16 02:05:42,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:05:42,884 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2021-10-16 02:05:42,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 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 02:05:42,884 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2021-10-16 02:05:42,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-16 02:05:42,885 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:05:42,886 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 02:05:42,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 02:05:42,886 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:05:42,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:05:42,887 INFO L82 PathProgramCache]: Analyzing trace with hash -464459857, now seen corresponding path program 1 times [2021-10-16 02:05:42,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:05:42,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165350923] [2021-10-16 02:05:42,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:05:42,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:05:42,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:05:43,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:05:43,060 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:05:43,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165350923] [2021-10-16 02:05:43,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165350923] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:05:43,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:05:43,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 02:05:43,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592406409] [2021-10-16 02:05:43,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:05:43,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:05:43,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:05:43,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:05:43,064 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 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 02:05:43,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:05:43,204 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2021-10-16 02:05:43,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:05:43,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 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 02:05:43,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:05:43,206 INFO L225 Difference]: With dead ends: 103 [2021-10-16 02:05:43,207 INFO L226 Difference]: Without dead ends: 101 [2021-10-16 02:05:43,207 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 61.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:05:43,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-16 02:05:43,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 74. [2021-10-16 02:05:43,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 73 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 02:05:43,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2021-10-16 02:05:43,219 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 21 [2021-10-16 02:05:43,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:05:43,219 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2021-10-16 02:05:43,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 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 02:05:43,220 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2021-10-16 02:05:43,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 02:05:43,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:05:43,221 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] [2021-10-16 02:05:43,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 02:05:43,222 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:05:43,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:05:43,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1642550139, now seen corresponding path program 1 times [2021-10-16 02:05:43,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:05:43,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504721257] [2021-10-16 02:05:43,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:05:43,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:05:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:05:43,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:05:43,323 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:05:43,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504721257] [2021-10-16 02:05:43,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504721257] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:05:43,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:05:43,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 02:05:43,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314820521] [2021-10-16 02:05:43,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:05:43,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:05:43,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:05:43,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:05:43,327 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 02:05:43,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:05:43,454 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2021-10-16 02:05:43,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:05:43,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 02:05:43,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:05:43,456 INFO L225 Difference]: With dead ends: 116 [2021-10-16 02:05:43,457 INFO L226 Difference]: Without dead ends: 114 [2021-10-16 02:05:43,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:05:43,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-16 02:05:43,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 72. [2021-10-16 02:05:43,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 59 states have (on average 1.305084745762712) internal successors, (77), 71 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 02:05:43,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2021-10-16 02:05:43,468 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 22 [2021-10-16 02:05:43,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:05:43,469 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2021-10-16 02:05:43,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 02:05:43,469 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2021-10-16 02:05:43,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 02:05:43,470 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:05:43,471 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 02:05:43,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-16 02:05:43,471 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:05:43,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:05:43,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1513349547, now seen corresponding path program 1 times [2021-10-16 02:05:43,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:05:43,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463263361] [2021-10-16 02:05:43,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:05:43,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:05:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:05:43,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:05:43,548 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:05:43,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463263361] [2021-10-16 02:05:43,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463263361] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:05:43,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:05:43,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 02:05:43,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030815408] [2021-10-16 02:05:43,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:05:43,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:05:43,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:05:43,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:05:43,552 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 02:05:43,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:05:43,649 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2021-10-16 02:05:43,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:05:43,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 02:05:43,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:05:43,653 INFO L225 Difference]: With dead ends: 72 [2021-10-16 02:05:43,653 INFO L226 Difference]: Without dead ends: 70 [2021-10-16 02:05:43,654 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:05:43,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-16 02:05:43,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-16 02:05:43,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 58 states have (on average 1.293103448275862) internal successors, (75), 69 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 02:05:43,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions. [2021-10-16 02:05:43,677 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 22 [2021-10-16 02:05:43,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:05:43,677 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 75 transitions. [2021-10-16 02:05:43,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 02:05:43,678 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions. [2021-10-16 02:05:43,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-16 02:05:43,679 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:05:43,679 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] [2021-10-16 02:05:43,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-16 02:05:43,679 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:05:43,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:05:43,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1665131132, now seen corresponding path program 1 times [2021-10-16 02:05:43,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:05:43,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081620045] [2021-10-16 02:05:43,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:05:43,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:05:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:05:43,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:05:43,773 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:05:43,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081620045] [2021-10-16 02:05:43,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081620045] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:05:43,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:05:43,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:05:43,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511604543] [2021-10-16 02:05:43,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:05:43,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:05:43,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:05:43,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:05:43,776 INFO L87 Difference]: Start difference. First operand 70 states and 75 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:05:43,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:05:43,826 INFO L93 Difference]: Finished difference Result 110 states and 116 transitions. [2021-10-16 02:05:43,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:05:43,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-10-16 02:05:43,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:05:43,828 INFO L225 Difference]: With dead ends: 110 [2021-10-16 02:05:43,828 INFO L226 Difference]: Without dead ends: 70 [2021-10-16 02:05:43,829 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:05:43,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-16 02:05:43,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-16 02:05:43,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 69 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:05:43,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2021-10-16 02:05:43,836 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 24 [2021-10-16 02:05:43,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:05:43,837 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2021-10-16 02:05:43,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:05:43,838 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2021-10-16 02:05:43,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-16 02:05:43,839 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:05:43,839 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:05:43,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-16 02:05:43,840 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:05:43,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:05:43,841 INFO L82 PathProgramCache]: Analyzing trace with hash -649021887, now seen corresponding path program 1 times [2021-10-16 02:05:43,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:05:43,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867782844] [2021-10-16 02:05:43,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:05:43,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:05:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:05:43,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:05:43,930 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:05:43,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867782844] [2021-10-16 02:05:43,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867782844] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:05:43,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205029080] [2021-10-16 02:05:43,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:05:43,931 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:05:43,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:05:43,933 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:05:43,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:05:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:05:44,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:05:44,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:05:44,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:05:44,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:05:44,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:05:44,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205029080] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:05:44,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [953564369] [2021-10-16 02:05:44,512 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-10-16 02:05:44,512 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:05:44,520 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:05:44,528 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:05:44,528 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:05:44,605 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:05:44,613 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:05:44,614 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:05:44,615 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:05:44,620 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:05:44,621 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:05:44,623 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:05:44,635 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-10-16 02:05:44,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:05:44,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:05:44,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:05:44,783 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-16 02:05:44,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-16 02:05:44,786 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:05:44,790 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-16 02:05:44,793 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:05:44,794 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-16 02:05:44,797 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:05:44,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:05:44,831 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:05:44,837 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:05:44,840 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-10-16 02:05:44,841 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:05:44,842 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:146, output treesize:130 [2021-10-16 02:05:44,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-16 02:05:45,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:05:45,059 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_9| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 02:05:45,064 INFO L168 Benchmark]: Toolchain (without parser) took 5443.39 ms. Allocated memory is still 130.0 MB. Free memory was 102.8 MB in the beginning and 99.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 66.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:05:45,064 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory is still 54.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:05:45,064 INFO L168 Benchmark]: CACSL2BoogieTranslator took 499.71 ms. Allocated memory is still 130.0 MB. Free memory was 102.5 MB in the beginning and 83.3 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:05:45,065 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.00 ms. Allocated memory is still 130.0 MB. Free memory was 83.3 MB in the beginning and 81.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:05:45,065 INFO L168 Benchmark]: Boogie Preprocessor took 70.67 ms. Allocated memory is still 130.0 MB. Free memory was 81.3 MB in the beginning and 79.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:05:45,066 INFO L168 Benchmark]: RCFGBuilder took 720.30 ms. Allocated memory is still 130.0 MB. Free memory was 79.9 MB in the beginning and 62.4 MB in the end (delta: 17.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:05:45,066 INFO L168 Benchmark]: TraceAbstraction took 4063.38 ms. Allocated memory is still 130.0 MB. Free memory was 62.0 MB in the beginning and 99.3 MB in the end (delta: -37.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:05:45,072 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory is still 54.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 499.71 ms. Allocated memory is still 130.0 MB. Free memory was 102.5 MB in the beginning and 83.3 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.00 ms. Allocated memory is still 130.0 MB. Free memory was 83.3 MB in the beginning and 81.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.67 ms. Allocated memory is still 130.0 MB. Free memory was 81.3 MB in the beginning and 79.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 720.30 ms. Allocated memory is still 130.0 MB. Free memory was 79.9 MB in the beginning and 62.4 MB in the end (delta: 17.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4063.38 ms. Allocated memory is still 130.0 MB. Free memory was 62.0 MB in the beginning and 99.3 MB in the end (delta: -37.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_9| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_9|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:05:45,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:05:48,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:05:48,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:05:48,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:05:48,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:05:48,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:05:48,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:05:48,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:05:48,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:05:48,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:05:48,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:05:48,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:05:48,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:05:48,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:05:48,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:05:48,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:05:48,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:05:48,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:05:48,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:05:48,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:05:48,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:05:48,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:05:48,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:05:48,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:05:48,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:05:48,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:05:48,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:05:48,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:05:48,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:05:48,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:05:48,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:05:48,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:05:48,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:05:48,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:05:48,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:05:48,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:05:48,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:05:48,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:05:48,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:05:48,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:05:48,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:05:48,289 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:05:48,322 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:05:48,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:05:48,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:05:48,324 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:05:48,324 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:05:48,325 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:05:48,325 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:05:48,325 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:05:48,325 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:05:48,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:05:48,330 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:05:48,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:05:48,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:05:48,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:05:48,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:05:48,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:05:48,331 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:05:48,332 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:05:48,332 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:05:48,332 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:05:48,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:05:48,333 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:05:48,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:05:48,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:05:48,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:05:48,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:05:48,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:05:48,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:05:48,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:05:48,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:05:48,337 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:05:48,337 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:05:48,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:05:48,338 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:05:48,338 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:05:48,338 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e45e933f699aab7bcc9592c7af081e2fbc1238f5 [2021-10-16 02:05:48,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:05:48,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:05:48,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:05:48,882 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:05:48,884 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:05:48,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2021-10-16 02:05:48,989 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/data/6ae78a04c/ad9e6cb35fa34fe083bf3a1a8afc82da/FLAGafaebc096 [2021-10-16 02:05:49,686 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:05:49,688 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2021-10-16 02:05:49,703 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/data/6ae78a04c/ad9e6cb35fa34fe083bf3a1a8afc82da/FLAGafaebc096 [2021-10-16 02:05:50,013 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/data/6ae78a04c/ad9e6cb35fa34fe083bf3a1a8afc82da [2021-10-16 02:05:50,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:05:50,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:05:50,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:05:50,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:05:50,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:05:50,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:05:50" (1/1) ... [2021-10-16 02:05:50,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a1dc9df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:50, skipping insertion in model container [2021-10-16 02:05:50,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:05:50" (1/1) ... [2021-10-16 02:05:50,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:05:50,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:05:50,285 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1551,1564] [2021-10-16 02:05:50,290 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1758,1771] [2021-10-16 02:05:50,294 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2095,2108] [2021-10-16 02:05:50,297 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2296,2309] [2021-10-16 02:05:50,301 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2701,2714] [2021-10-16 02:05:50,304 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2902,2915] [2021-10-16 02:05:50,307 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3228,3241] [2021-10-16 02:05:50,310 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3435,3448] [2021-10-16 02:05:50,316 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3914,3927] [2021-10-16 02:05:50,319 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4118,4131] [2021-10-16 02:05:50,323 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4426,4439] [2021-10-16 02:05:50,326 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4630,4643] [2021-10-16 02:05:50,349 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4995,5008] [2021-10-16 02:05:50,352 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5198,5211] [2021-10-16 02:05:50,355 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5412,5425] [2021-10-16 02:05:50,358 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5616,5629] [2021-10-16 02:05:50,362 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6138,6151] [2021-10-16 02:05:50,365 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6342,6355] [2021-10-16 02:05:50,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:05:50,397 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:05:50,440 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1551,1564] [2021-10-16 02:05:50,454 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1758,1771] [2021-10-16 02:05:50,456 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2095,2108] [2021-10-16 02:05:50,458 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2296,2309] [2021-10-16 02:05:50,461 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2701,2714] [2021-10-16 02:05:50,463 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2902,2915] [2021-10-16 02:05:50,466 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3228,3241] [2021-10-16 02:05:50,468 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3435,3448] [2021-10-16 02:05:50,492 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3914,3927] [2021-10-16 02:05:50,494 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4118,4131] [2021-10-16 02:05:50,497 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4426,4439] [2021-10-16 02:05:50,499 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4630,4643] [2021-10-16 02:05:50,502 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4995,5008] [2021-10-16 02:05:50,504 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5198,5211] [2021-10-16 02:05:50,507 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5412,5425] [2021-10-16 02:05:50,509 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5616,5629] [2021-10-16 02:05:50,512 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6138,6151] [2021-10-16 02:05:50,514 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_22c2c67c-da21-47fb-bd2f-7050ecfe585e/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6342,6355] [2021-10-16 02:05:50,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:05:50,535 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:05:50,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:50 WrapperNode [2021-10-16 02:05:50,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:05:50,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:05:50,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:05:50,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:05:50,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:50" (1/1) ... [2021-10-16 02:05:50,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:50" (1/1) ... [2021-10-16 02:05:50,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:05:50,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:05:50,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:05:50,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:05:50,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:50" (1/1) ... [2021-10-16 02:05:50,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:50" (1/1) ... [2021-10-16 02:05:50,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:50" (1/1) ... [2021-10-16 02:05:50,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:50" (1/1) ... [2021-10-16 02:05:50,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:50" (1/1) ... [2021-10-16 02:05:50,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:50" (1/1) ... [2021-10-16 02:05:50,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:50" (1/1) ... [2021-10-16 02:05:50,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:05:50,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:05:50,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:05:50,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:05:50,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:50" (1/1) ... [2021-10-16 02:05:50,663 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:05:50,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:05:50,704 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:05:50,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:05:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:05:50,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:05:50,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:05:50,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:05:51,429 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:05:51,429 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-16 02:05:51,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:05:51 BoogieIcfgContainer [2021-10-16 02:05:51,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:05:51,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:05:51,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:05:51,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:05:51,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:05:50" (1/3) ... [2021-10-16 02:05:51,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72089599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:05:51, skipping insertion in model container [2021-10-16 02:05:51,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:05:50" (2/3) ... [2021-10-16 02:05:51,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72089599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:05:51, skipping insertion in model container [2021-10-16 02:05:51,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:05:51" (3/3) ... [2021-10-16 02:05:51,442 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i.v+cfa-reducer.c [2021-10-16 02:05:51,448 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:05:51,449 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-10-16 02:05:51,506 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:05:51,513 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:05:51,514 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-10-16 02:05:51,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 63 states have (on average 1.8888888888888888) internal successors, (119), 81 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:05:51,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 02:05:51,539 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:05:51,540 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:05:51,541 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:05:51,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:05:51,548 INFO L82 PathProgramCache]: Analyzing trace with hash -2034435078, now seen corresponding path program 1 times [2021-10-16 02:05:51,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:05:51,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420023326] [2021-10-16 02:05:51,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:05:51,564 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:05:51,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:05:51,569 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:05:51,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:05:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:05:51,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:05:51,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:05:52,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:05:52,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:05:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:05:53,703 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:05:53,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420023326] [2021-10-16 02:05:53,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420023326] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:05:53,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:05:53,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 6] imperfect sequences [] total 12 [2021-10-16 02:05:53,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555086370] [2021-10-16 02:05:53,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 02:05:53,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:05:53,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 02:05:53,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:05:53,751 INFO L87 Difference]: Start difference. First operand has 82 states, 63 states have (on average 1.8888888888888888) internal successors, (119), 81 states have internal predecessors, (119), 0 states have call successors, (0), 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 12 states, 12 states have (on average 2.25) internal successors, (27), 12 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 02:05:54,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:05:54,966 INFO L93 Difference]: Finished difference Result 113 states and 140 transitions. [2021-10-16 02:05:54,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-16 02:05:54,969 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 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 15 [2021-10-16 02:05:54,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:05:54,979 INFO L225 Difference]: With dead ends: 113 [2021-10-16 02:05:54,979 INFO L226 Difference]: Without dead ends: 76 [2021-10-16 02:05:54,983 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1130.9ms TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2021-10-16 02:05:55,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-16 02:05:55,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-10-16 02:05:55,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 75 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 02:05:55,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2021-10-16 02:05:55,030 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 15 [2021-10-16 02:05:55,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:05:55,031 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2021-10-16 02:05:55,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 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 02:05:55,031 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2021-10-16 02:05:55,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 02:05:55,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:05:55,032 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:05:55,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:05:55,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:05:55,247 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:05:55,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:05:55,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1357026114, now seen corresponding path program 1 times [2021-10-16 02:05:55,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:05:55,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100486456] [2021-10-16 02:05:55,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:05:55,250 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:05:55,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:05:55,252 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:05:55,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:05:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:05:55,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:05:55,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:05:55,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:05:55,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:05:55,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:05:55,747 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:05:55,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100486456] [2021-10-16 02:05:55,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100486456] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:05:55,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:05:55,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2021-10-16 02:05:55,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122054098] [2021-10-16 02:05:55,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-16 02:05:55,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:05:55,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-16 02:05:55,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:05:55,767 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:05:56,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:05:56,273 INFO L93 Difference]: Finished difference Result 173 states and 182 transitions. [2021-10-16 02:05:56,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-16 02:05:56,275 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 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 16 [2021-10-16 02:05:56,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:05:56,277 INFO L225 Difference]: With dead ends: 173 [2021-10-16 02:05:56,278 INFO L226 Difference]: Without dead ends: 171 [2021-10-16 02:05:56,279 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 315.1ms TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2021-10-16 02:05:56,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-10-16 02:05:56,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 74. [2021-10-16 02:05:56,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 73 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 02:05:56,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2021-10-16 02:05:56,299 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 16 [2021-10-16 02:05:56,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:05:56,300 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2021-10-16 02:05:56,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:05:56,301 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2021-10-16 02:05:56,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:05:56,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:05:56,303 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:05:56,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:05:56,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:05:56,522 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:05:56,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:05:56,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1567835227, now seen corresponding path program 1 times [2021-10-16 02:05:56,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:05:56,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115377588] [2021-10-16 02:05:56,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:05:56,524 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:05:56,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:05:56,527 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:05:56,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:05:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:05:56,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-16 02:05:56,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:05:57,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:05:57,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:05:57,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:05:57,969 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:05:57,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115377588] [2021-10-16 02:05:57,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115377588] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:05:57,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:05:57,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 6] imperfect sequences [] total 15 [2021-10-16 02:05:57,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230256282] [2021-10-16 02:05:57,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-16 02:05:57,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:05:57,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-16 02:05:57,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:05:57,973 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 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 02:05:58,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:05:58,754 INFO L93 Difference]: Finished difference Result 170 states and 177 transitions. [2021-10-16 02:05:58,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-16 02:05:58,755 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 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 18 [2021-10-16 02:05:58,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:05:58,757 INFO L225 Difference]: With dead ends: 170 [2021-10-16 02:05:58,757 INFO L226 Difference]: Without dead ends: 168 [2021-10-16 02:05:58,758 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 759.4ms TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-10-16 02:05:58,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-10-16 02:05:58,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 72. [2021-10-16 02:05:58,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 71 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 02:05:58,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2021-10-16 02:05:58,785 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 18 [2021-10-16 02:05:58,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:05:58,786 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2021-10-16 02:05:58,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 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 02:05:58,786 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2021-10-16 02:05:58,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 02:05:58,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:05:58,787 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:05:58,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:05:59,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:05:59,000 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:05:59,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:05:59,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1358247672, now seen corresponding path program 1 times [2021-10-16 02:05:59,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:05:59,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375306961] [2021-10-16 02:05:59,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:05:59,002 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:05:59,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:05:59,004 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:05:59,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:05:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:05:59,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:05:59,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:05:59,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:05:59,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:05:59,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:05:59,304 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:05:59,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375306961] [2021-10-16 02:05:59,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375306961] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:05:59,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:05:59,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-16 02:05:59,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897219124] [2021-10-16 02:05:59,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:05:59,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:05:59,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:05:59,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:05:59,308 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 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 02:05:59,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:05:59,454 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2021-10-16 02:05:59,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:05:59,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 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 19 [2021-10-16 02:05:59,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:05:59,456 INFO L225 Difference]: With dead ends: 95 [2021-10-16 02:05:59,457 INFO L226 Difference]: Without dead ends: 93 [2021-10-16 02:05:59,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 49.8ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:05:59,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-16 02:05:59,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 70. [2021-10-16 02:05:59,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 69 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:05:59,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2021-10-16 02:05:59,467 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 19 [2021-10-16 02:05:59,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:05:59,467 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2021-10-16 02:05:59,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 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 02:05:59,468 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2021-10-16 02:05:59,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 02:05:59,469 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:05:59,469 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 02:05:59,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-16 02:05:59,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:05:59,682 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:05:59,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:05:59,683 INFO L82 PathProgramCache]: Analyzing trace with hash -665385716, now seen corresponding path program 1 times [2021-10-16 02:05:59,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:05:59,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541272987] [2021-10-16 02:05:59,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:05:59,684 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:05:59,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:05:59,691 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:05:59,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:05:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:05:59,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:05:59,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:05:59,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:05:59,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:00,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:00,111 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:06:00,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541272987] [2021-10-16 02:06:00,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541272987] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:06:00,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:06:00,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-16 02:06:00,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980201576] [2021-10-16 02:06:00,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:06:00,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:06:00,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:06:00,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:06:00,113 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:00,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:06:00,404 INFO L93 Difference]: Finished difference Result 168 states and 177 transitions. [2021-10-16 02:06:00,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:06:00,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 02:06:00,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:06:00,407 INFO L225 Difference]: With dead ends: 168 [2021-10-16 02:06:00,407 INFO L226 Difference]: Without dead ends: 166 [2021-10-16 02:06:00,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 133.2ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:06:00,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-16 02:06:00,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 73. [2021-10-16 02:06:00,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 59 states have (on average 1.3220338983050848) internal successors, (78), 72 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 02:06:00,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2021-10-16 02:06:00,434 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 22 [2021-10-16 02:06:00,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:06:00,435 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2021-10-16 02:06:00,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:00,435 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2021-10-16 02:06:00,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 02:06:00,437 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:06:00,437 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 02:06:00,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:00,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:06:00,650 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:06:00,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:06:00,651 INFO L82 PathProgramCache]: Analyzing trace with hash -661217951, now seen corresponding path program 1 times [2021-10-16 02:06:00,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:06:00,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452991765] [2021-10-16 02:06:00,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:00,652 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:06:00,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:06:00,653 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:06:00,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:06:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:00,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:06:00,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:00,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:00,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:01,017 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 02:06:01,017 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:06:01,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452991765] [2021-10-16 02:06:01,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452991765] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:06:01,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:06:01,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-16 02:06:01,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135718158] [2021-10-16 02:06:01,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:06:01,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:06:01,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:06:01,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:06:01,020 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:01,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:06:01,301 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2021-10-16 02:06:01,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:06:01,302 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 02:06:01,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:06:01,304 INFO L225 Difference]: With dead ends: 120 [2021-10-16 02:06:01,304 INFO L226 Difference]: Without dead ends: 118 [2021-10-16 02:06:01,304 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 119.5ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:06:01,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-16 02:06:01,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 75. [2021-10-16 02:06:01,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 61 states have (on average 1.3114754098360655) internal successors, (80), 74 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:01,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2021-10-16 02:06:01,314 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 22 [2021-10-16 02:06:01,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:06:01,315 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2021-10-16 02:06:01,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:01,315 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2021-10-16 02:06:01,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-16 02:06:01,316 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:06:01,317 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] [2021-10-16 02:06:01,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:01,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:06:01,530 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:06:01,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:06:01,531 INFO L82 PathProgramCache]: Analyzing trace with hash 847883539, now seen corresponding path program 1 times [2021-10-16 02:06:01,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:06:01,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801052250] [2021-10-16 02:06:01,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:01,532 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:06:01,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:06:01,533 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:06:01,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:06:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:01,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:06:01,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:01,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:01,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:01,861 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:06:01,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801052250] [2021-10-16 02:06:01,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801052250] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:06:01,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:06:01,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-16 02:06:01,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383955606] [2021-10-16 02:06:01,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:06:01,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:06:01,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:06:01,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:06:01,864 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:02,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:06:02,044 INFO L93 Difference]: Finished difference Result 167 states and 176 transitions. [2021-10-16 02:06:02,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:06:02,045 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 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 23 [2021-10-16 02:06:02,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:06:02,046 INFO L225 Difference]: With dead ends: 167 [2021-10-16 02:06:02,046 INFO L226 Difference]: Without dead ends: 165 [2021-10-16 02:06:02,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 60.9ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:06:02,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-16 02:06:02,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 76. [2021-10-16 02:06:02,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 75 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:02,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2021-10-16 02:06:02,056 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 23 [2021-10-16 02:06:02,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:06:02,057 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2021-10-16 02:06:02,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:02,057 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2021-10-16 02:06:02,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-16 02:06:02,058 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:06:02,059 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] [2021-10-16 02:06:02,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:02,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:06:02,275 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:06:02,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:06:02,276 INFO L82 PathProgramCache]: Analyzing trace with hash 977084131, now seen corresponding path program 1 times [2021-10-16 02:06:02,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:06:02,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518304559] [2021-10-16 02:06:02,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:02,277 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:06:02,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:06:02,278 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:06:02,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:06:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:02,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:06:02,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:02,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:02,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:02,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:02,692 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:06:02,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518304559] [2021-10-16 02:06:02,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518304559] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:06:02,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:06:02,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-16 02:06:02,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524478447] [2021-10-16 02:06:02,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:06:02,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:06:02,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:06:02,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:06:02,695 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:02,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:06:02,845 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2021-10-16 02:06:02,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:06:02,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 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 23 [2021-10-16 02:06:02,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:06:02,847 INFO L225 Difference]: With dead ends: 116 [2021-10-16 02:06:02,847 INFO L226 Difference]: Without dead ends: 114 [2021-10-16 02:06:02,847 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 58.5ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:06:02,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-16 02:06:02,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 77. [2021-10-16 02:06:02,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 63 states have (on average 1.3015873015873016) internal successors, (82), 76 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:02,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2021-10-16 02:06:02,856 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 23 [2021-10-16 02:06:02,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:06:02,857 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2021-10-16 02:06:02,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:02,857 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2021-10-16 02:06:02,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-16 02:06:02,860 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:06:02,861 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] [2021-10-16 02:06:02,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:03,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:06:03,076 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:06:03,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:06:03,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1619855478, now seen corresponding path program 1 times [2021-10-16 02:06:03,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:06:03,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141077297] [2021-10-16 02:06:03,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:03,077 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:06:03,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:06:03,078 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:06:03,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:06:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:03,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:06:03,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:03,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:03,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:03,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:03,387 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:06:03,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141077297] [2021-10-16 02:06:03,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141077297] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:06:03,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:06:03,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:06:03,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008693543] [2021-10-16 02:06:03,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:06:03,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:06:03,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:06:03,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:06:03,389 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:03,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:06:03,495 INFO L93 Difference]: Finished difference Result 124 states and 130 transitions. [2021-10-16 02:06:03,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:06:03,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-16 02:06:03,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:06:03,497 INFO L225 Difference]: With dead ends: 124 [2021-10-16 02:06:03,497 INFO L226 Difference]: Without dead ends: 84 [2021-10-16 02:06:03,498 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:06:03,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-16 02:06:03,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2021-10-16 02:06:03,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 79 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:03,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2021-10-16 02:06:03,506 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 25 [2021-10-16 02:06:03,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:06:03,507 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2021-10-16 02:06:03,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:03,508 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2021-10-16 02:06:03,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 02:06:03,509 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:06:03,509 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:06:03,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:03,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:06:03,723 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:06:03,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:06:03,724 INFO L82 PathProgramCache]: Analyzing trace with hash 595608307, now seen corresponding path program 1 times [2021-10-16 02:06:03,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:06:03,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394761953] [2021-10-16 02:06:03,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:03,725 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:06:03,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:06:03,726 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:06:03,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:06:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:03,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 02:06:03,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:04,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:04,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:05,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:05,368 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:06:05,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394761953] [2021-10-16 02:06:05,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394761953] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:06:05,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [730153316] [2021-10-16 02:06:05,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:05,369 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:06:05,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:06:05,372 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:06:05,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-16 02:06:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:05,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-16 02:06:05,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:06,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:06,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:06,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:06,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [730153316] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:06:06,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643119985] [2021-10-16 02:06:06,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:06,718 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:06:06,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:06:06,724 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:06:06,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-16 02:06:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:07,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-16 02:06:07,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:08,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:08,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:08,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:08,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643119985] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:06:08,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:06:08,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 11, 7, 12, 7] total 19 [2021-10-16 02:06:08,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486173385] [2021-10-16 02:06:08,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-16 02:06:08,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:06:08,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-16 02:06:08,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-10-16 02:06:08,179 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 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 02:06:09,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:06:09,837 INFO L93 Difference]: Finished difference Result 123 states and 127 transitions. [2021-10-16 02:06:09,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-16 02:06:09,838 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 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 26 [2021-10-16 02:06:09,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:06:09,839 INFO L225 Difference]: With dead ends: 123 [2021-10-16 02:06:09,840 INFO L226 Difference]: Without dead ends: 121 [2021-10-16 02:06:09,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 131 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1628.2ms TimeCoverageRelationStatistics Valid=232, Invalid=470, Unknown=0, NotChecked=0, Total=702 [2021-10-16 02:06:09,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-10-16 02:06:09,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 78. [2021-10-16 02:06:09,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 77 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 02:06:09,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2021-10-16 02:06:09,847 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 26 [2021-10-16 02:06:09,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:06:09,847 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2021-10-16 02:06:09,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 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 02:06:09,848 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2021-10-16 02:06:09,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 02:06:09,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:06:09,849 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] [2021-10-16 02:06:09,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:10,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:10,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:10,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:06:10,471 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:06:10,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:06:10,471 INFO L82 PathProgramCache]: Analyzing trace with hash 599776072, now seen corresponding path program 1 times [2021-10-16 02:06:10,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:06:10,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112390329] [2021-10-16 02:06:10,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:10,472 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:06:10,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:06:10,473 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:06:10,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-16 02:06:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:10,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:06:10,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:11,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:11,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:12,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:12,135 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:06:12,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112390329] [2021-10-16 02:06:12,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112390329] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:06:12,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1074550569] [2021-10-16 02:06:12,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:12,136 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:06:12,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:06:12,151 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:06:12,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-10-16 02:06:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:12,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-16 02:06:12,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:13,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:13,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:13,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1074550569] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:06:13,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737591554] [2021-10-16 02:06:13,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:13,834 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:06:13,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:06:13,835 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:06:13,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-16 02:06:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:14,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 02:06:14,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:15,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:15,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:15,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:15,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737591554] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:06:15,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:06:15,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 11, 7, 11, 7] total 23 [2021-10-16 02:06:15,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098659649] [2021-10-16 02:06:15,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-16 02:06:15,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:06:15,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-16 02:06:15,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-10-16 02:06:15,611 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand has 23 states, 23 states have (on average 3.5652173913043477) internal successors, (82), 23 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:21,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:06:21,258 INFO L93 Difference]: Finished difference Result 267 states and 279 transitions. [2021-10-16 02:06:21,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-16 02:06:21,259 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.5652173913043477) internal successors, (82), 23 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-16 02:06:21,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:06:21,261 INFO L225 Difference]: With dead ends: 267 [2021-10-16 02:06:21,261 INFO L226 Difference]: Without dead ends: 265 [2021-10-16 02:06:21,263 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 4786.6ms TimeCoverageRelationStatistics Valid=630, Invalid=1440, Unknown=0, NotChecked=0, Total=2070 [2021-10-16 02:06:21,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-10-16 02:06:21,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 78. [2021-10-16 02:06:21,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 77 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:21,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2021-10-16 02:06:21,272 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 26 [2021-10-16 02:06:21,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:06:21,272 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2021-10-16 02:06:21,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.5652173913043477) internal successors, (82), 23 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:21,272 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2021-10-16 02:06:21,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 02:06:21,273 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:06:21,274 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] [2021-10-16 02:06:21,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:21,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:21,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-10-16 02:06:21,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:06:21,879 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:06:21,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:06:21,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1780382557, now seen corresponding path program 1 times [2021-10-16 02:06:21,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:06:21,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769788158] [2021-10-16 02:06:21,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:21,880 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:06:21,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:06:21,881 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:06:21,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-16 02:06:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:22,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 02:06:22,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:23,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:23,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:23,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:23,507 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:06:23,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769788158] [2021-10-16 02:06:23,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769788158] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:06:23,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:06:23,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 5] imperfect sequences [] total 12 [2021-10-16 02:06:23,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910702662] [2021-10-16 02:06:23,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 02:06:23,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:06:23,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 02:06:23,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:06:23,509 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:24,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:06:24,003 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2021-10-16 02:06:24,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-16 02:06:24,004 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2021-10-16 02:06:24,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:06:24,005 INFO L225 Difference]: With dead ends: 117 [2021-10-16 02:06:24,005 INFO L226 Difference]: Without dead ends: 115 [2021-10-16 02:06:24,006 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 435.7ms TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-10-16 02:06:24,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-16 02:06:24,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 80. [2021-10-16 02:06:24,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 67 states have (on average 1.2537313432835822) internal successors, (84), 79 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:24,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2021-10-16 02:06:24,014 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 26 [2021-10-16 02:06:24,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:06:24,015 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2021-10-16 02:06:24,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:24,015 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2021-10-16 02:06:24,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-16 02:06:24,016 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:06:24,017 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:06:24,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:24,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:06:24,231 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:06:24,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:06:24,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1283992588, now seen corresponding path program 1 times [2021-10-16 02:06:24,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:06:24,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703920416] [2021-10-16 02:06:24,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:24,232 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:06:24,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:06:24,233 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:06:24,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-16 02:06:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:24,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:06:24,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:24,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:24,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:24,980 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:06:24,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703920416] [2021-10-16 02:06:24,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703920416] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:06:24,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1827633377] [2021-10-16 02:06:24,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:24,980 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:06:24,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:06:24,984 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:06:24,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-10-16 02:06:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:25,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:06:25,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:25,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:25,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:25,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:25,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1827633377] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:06:25,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758451264] [2021-10-16 02:06:25,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:25,851 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:06:25,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:06:25,852 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:06:25,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-16 02:06:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:26,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:06:26,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:26,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:26,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:26,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758451264] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:06:26,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:06:26,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 8, 8] total 15 [2021-10-16 02:06:26,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55127724] [2021-10-16 02:06:26,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-16 02:06:26,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:06:26,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-16 02:06:26,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:06:26,822 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:27,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:06:27,634 INFO L93 Difference]: Finished difference Result 399 states and 422 transitions. [2021-10-16 02:06:27,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-16 02:06:27,635 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-16 02:06:27,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:06:27,637 INFO L225 Difference]: With dead ends: 399 [2021-10-16 02:06:27,637 INFO L226 Difference]: Without dead ends: 397 [2021-10-16 02:06:27,638 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 492.5ms TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2021-10-16 02:06:27,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-10-16 02:06:27,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 92. [2021-10-16 02:06:27,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 79 states have (on average 1.2911392405063291) internal successors, (102), 91 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 02:06:27,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2021-10-16 02:06:27,651 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 27 [2021-10-16 02:06:27,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:06:27,651 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2021-10-16 02:06:27,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:27,652 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2021-10-16 02:06:27,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-16 02:06:27,653 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:06:27,653 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:06:27,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-10-16 02:06:27,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:28,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-10-16 02:06:28,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:06:28,257 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:06:28,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:06:28,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1280139623, now seen corresponding path program 1 times [2021-10-16 02:06:28,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:06:28,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200358776] [2021-10-16 02:06:28,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:28,258 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:06:28,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:06:28,258 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:06:28,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-16 02:06:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:28,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 02:06:28,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:29,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:29,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:29,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:29,759 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:06:29,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200358776] [2021-10-16 02:06:29,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1200358776] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:06:29,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1112880112] [2021-10-16 02:06:29,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:29,760 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:06:29,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:06:29,761 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:06:29,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-10-16 02:06:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:30,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-16 02:06:30,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:31,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:31,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:31,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:31,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1112880112] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:06:31,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920771727] [2021-10-16 02:06:31,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:31,275 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:06:31,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:06:31,276 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:06:31,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-16 02:06:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:31,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-16 02:06:31,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:32,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:32,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:32,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:32,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920771727] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:06:32,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:06:32,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 11, 7, 12, 7] total 19 [2021-10-16 02:06:32,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120734629] [2021-10-16 02:06:32,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-16 02:06:32,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:06:32,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-16 02:06:32,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-10-16 02:06:32,840 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:34,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:06:34,454 INFO L93 Difference]: Finished difference Result 99 states and 108 transitions. [2021-10-16 02:06:34,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-16 02:06:34,456 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 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 02:06:34,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:06:34,457 INFO L225 Difference]: With dead ends: 99 [2021-10-16 02:06:34,457 INFO L226 Difference]: Without dead ends: 97 [2021-10-16 02:06:34,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1290.0ms TimeCoverageRelationStatistics Valid=232, Invalid=470, Unknown=0, NotChecked=0, Total=702 [2021-10-16 02:06:34,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-16 02:06:34,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 90. [2021-10-16 02:06:34,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 78 states have (on average 1.2820512820512822) internal successors, (100), 89 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:34,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 100 transitions. [2021-10-16 02:06:34,468 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 100 transitions. Word has length 27 [2021-10-16 02:06:34,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:06:34,469 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 100 transitions. [2021-10-16 02:06:34,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:34,469 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 100 transitions. [2021-10-16 02:06:34,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-16 02:06:34,470 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:06:34,470 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 02:06:34,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:34,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:34,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-10-16 02:06:35,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:06:35,079 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:06:35,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:06:35,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1413193180, now seen corresponding path program 1 times [2021-10-16 02:06:35,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:06:35,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41857328] [2021-10-16 02:06:35,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:35,080 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:06:35,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:06:35,081 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:06:35,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-16 02:06:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:35,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:06:35,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:35,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:35,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:35,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:35,969 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:06:35,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41857328] [2021-10-16 02:06:35,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41857328] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:06:35,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [757084127] [2021-10-16 02:06:35,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:35,970 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:06:35,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:06:35,971 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:06:35,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-10-16 02:06:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:36,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:06:36,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:36,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:36,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:36,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:36,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [757084127] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:06:36,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098492003] [2021-10-16 02:06:36,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:36,968 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:06:36,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:06:36,969 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:06:36,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-16 02:06:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:37,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:06:37,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:37,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:06:37,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:37,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:06:37,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098492003] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:06:37,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-10-16 02:06:37,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7, 7, 7, 7] total 17 [2021-10-16 02:06:37,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551421193] [2021-10-16 02:06:37,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:06:37,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:06:37,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:06:37,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-10-16 02:06:37,913 INFO L87 Difference]: Start difference. First operand 90 states and 100 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:38,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:06:38,282 INFO L93 Difference]: Finished difference Result 187 states and 200 transitions. [2021-10-16 02:06:38,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-16 02:06:38,283 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 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 02:06:38,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:06:38,285 INFO L225 Difference]: With dead ends: 187 [2021-10-16 02:06:38,285 INFO L226 Difference]: Without dead ends: 182 [2021-10-16 02:06:38,286 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 375.1ms TimeCoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2021-10-16 02:06:38,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-16 02:06:38,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 90. [2021-10-16 02:06:38,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 78 states have (on average 1.2307692307692308) internal successors, (96), 89 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:38,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2021-10-16 02:06:38,296 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 27 [2021-10-16 02:06:38,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:06:38,296 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2021-10-16 02:06:38,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:38,297 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2021-10-16 02:06:38,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-16 02:06:38,297 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:06:38,298 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 02:06:38,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:38,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:38,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:38,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:06:38,911 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:06:38,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:06:38,912 INFO L82 PathProgramCache]: Analyzing trace with hash -642711428, now seen corresponding path program 1 times [2021-10-16 02:06:38,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:06:38,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464449797] [2021-10-16 02:06:38,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:38,912 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:06:38,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:06:38,914 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:06:38,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-16 02:06:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:39,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:06:39,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:39,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:39,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:39,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:39,746 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:06:39,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464449797] [2021-10-16 02:06:39,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464449797] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:06:39,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:06:39,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-16 02:06:39,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627799814] [2021-10-16 02:06:39,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:06:39,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:06:39,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:06:39,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:06:39,748 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:40,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:06:40,096 INFO L93 Difference]: Finished difference Result 180 states and 190 transitions. [2021-10-16 02:06:40,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-16 02:06:40,097 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 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 02:06:40,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:06:40,098 INFO L225 Difference]: With dead ends: 180 [2021-10-16 02:06:40,099 INFO L226 Difference]: Without dead ends: 178 [2021-10-16 02:06:40,099 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 167.7ms TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2021-10-16 02:06:40,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-16 02:06:40,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 93. [2021-10-16 02:06:40,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 92 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:40,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2021-10-16 02:06:40,111 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 27 [2021-10-16 02:06:40,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:06:40,111 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2021-10-16 02:06:40,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:40,112 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2021-10-16 02:06:40,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-16 02:06:40,113 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:06:40,114 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:06:40,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:40,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:06:40,327 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:06:40,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:06:40,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1628990916, now seen corresponding path program 1 times [2021-10-16 02:06:40,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:06:40,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399072088] [2021-10-16 02:06:40,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:40,328 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:06:40,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:06:40,329 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:06:40,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-16 02:06:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:40,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-16 02:06:40,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:42,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:43,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:06:43,153 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:06:43,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399072088] [2021-10-16 02:06:43,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399072088] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 02:06:43,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:06:43,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2021-10-16 02:06:43,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94140627] [2021-10-16 02:06:43,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:06:43,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:06:43,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:06:43,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-10-16 02:06:43,155 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:43,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:06:43,517 INFO L93 Difference]: Finished difference Result 115 states and 123 transitions. [2021-10-16 02:06:43,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:06:43,518 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-10-16 02:06:43,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:06:43,519 INFO L225 Difference]: With dead ends: 115 [2021-10-16 02:06:43,519 INFO L226 Difference]: Without dead ends: 113 [2021-10-16 02:06:43,520 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1052.6ms TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-10-16 02:06:43,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-16 02:06:43,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 86. [2021-10-16 02:06:43,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 85 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:43,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2021-10-16 02:06:43,528 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 30 [2021-10-16 02:06:43,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:06:43,529 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2021-10-16 02:06:43,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:43,529 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2021-10-16 02:06:43,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-16 02:06:43,530 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:06:43,530 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] [2021-10-16 02:06:43,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:43,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:06:43,743 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:06:43,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:06:43,743 INFO L82 PathProgramCache]: Analyzing trace with hash -47880409, now seen corresponding path program 1 times [2021-10-16 02:06:43,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:06:43,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567097055] [2021-10-16 02:06:43,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:43,744 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:06:43,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:06:43,745 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:06:43,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-16 02:06:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:44,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:06:44,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:44,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:44,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:44,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:44,992 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:06:44,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567097055] [2021-10-16 02:06:44,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567097055] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:06:44,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:06:44,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 6] imperfect sequences [] total 15 [2021-10-16 02:06:44,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711677113] [2021-10-16 02:06:44,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-16 02:06:44,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:06:44,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-16 02:06:44,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:06:44,994 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:45,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:06:45,998 INFO L93 Difference]: Finished difference Result 115 states and 122 transitions. [2021-10-16 02:06:45,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-16 02:06:45,999 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 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 30 [2021-10-16 02:06:45,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:06:46,000 INFO L225 Difference]: With dead ends: 115 [2021-10-16 02:06:46,000 INFO L226 Difference]: Without dead ends: 113 [2021-10-16 02:06:46,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 819.9ms TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2021-10-16 02:06:46,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-16 02:06:46,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 84. [2021-10-16 02:06:46,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 74 states have (on average 1.2162162162162162) internal successors, (90), 83 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 02:06:46,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2021-10-16 02:06:46,010 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 30 [2021-10-16 02:06:46,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:06:46,010 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2021-10-16 02:06:46,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:46,011 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2021-10-16 02:06:46,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-16 02:06:46,011 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:06:46,011 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 02:06:46,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:46,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:06:46,230 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:06:46,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:06:46,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1484288504, now seen corresponding path program 1 times [2021-10-16 02:06:46,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:06:46,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347232260] [2021-10-16 02:06:46,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:46,231 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:06:46,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:06:46,231 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:06:46,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-16 02:06:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:46,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:06:46,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:47,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:47,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:47,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:47,253 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:06:47,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347232260] [2021-10-16 02:06:47,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347232260] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:06:47,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:06:47,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-16 02:06:47,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583267382] [2021-10-16 02:06:47,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 02:06:47,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:06:47,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 02:06:47,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:06:47,255 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 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 02:06:47,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:06:47,860 INFO L93 Difference]: Finished difference Result 257 states and 271 transitions. [2021-10-16 02:06:47,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-16 02:06:47,861 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 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 31 [2021-10-16 02:06:47,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:06:47,863 INFO L225 Difference]: With dead ends: 257 [2021-10-16 02:06:47,863 INFO L226 Difference]: Without dead ends: 255 [2021-10-16 02:06:47,864 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 295.3ms TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-10-16 02:06:47,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-10-16 02:06:47,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 94. [2021-10-16 02:06:47,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 84 states have (on average 1.2142857142857142) internal successors, (102), 93 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 02:06:47,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 102 transitions. [2021-10-16 02:06:47,876 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 102 transitions. Word has length 31 [2021-10-16 02:06:47,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:06:47,876 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 102 transitions. [2021-10-16 02:06:47,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 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 02:06:47,877 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 102 transitions. [2021-10-16 02:06:47,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-16 02:06:47,877 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:06:47,878 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:06:47,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:48,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:06:48,094 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:06:48,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:06:48,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1571147844, now seen corresponding path program 1 times [2021-10-16 02:06:48,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:06:48,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867188603] [2021-10-16 02:06:48,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:48,096 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:06:48,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:06:48,097 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:06:48,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-16 02:06:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:48,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:06:48,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:49,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:49,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:49,244 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:49,244 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:06:49,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867188603] [2021-10-16 02:06:49,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867188603] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:06:49,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2054771947] [2021-10-16 02:06:49,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:49,245 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:06:49,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:06:49,246 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:06:49,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-10-16 02:06:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:50,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:06:50,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:50,390 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:50,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:50,526 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:50,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2054771947] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:06:50,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360658411] [2021-10-16 02:06:50,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:50,527 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:06:50,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:06:50,535 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:06:50,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-16 02:06:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:51,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 02:06:51,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:06:51,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:52,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:06:52,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360658411] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 02:06:52,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2021-10-16 02:06:52,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8, 8, 8, 9] total 22 [2021-10-16 02:06:52,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293417131] [2021-10-16 02:06:52,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:06:52,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:06:52,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:06:52,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-10-16 02:06:52,150 INFO L87 Difference]: Start difference. First operand 94 states and 102 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 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 02:06:52,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:06:52,479 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2021-10-16 02:06:52,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:06:52,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 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 32 [2021-10-16 02:06:52,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:06:52,481 INFO L225 Difference]: With dead ends: 101 [2021-10-16 02:06:52,481 INFO L226 Difference]: Without dead ends: 99 [2021-10-16 02:06:52,482 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 640.1ms TimeCoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2021-10-16 02:06:52,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-16 02:06:52,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 92. [2021-10-16 02:06:52,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 83 states have (on average 1.1927710843373494) internal successors, (99), 91 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:52,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2021-10-16 02:06:52,494 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 32 [2021-10-16 02:06:52,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:06:52,495 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2021-10-16 02:06:52,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 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 02:06:52,495 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2021-10-16 02:06:52,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-16 02:06:52,496 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:06:52,496 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] [2021-10-16 02:06:52,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:52,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:52,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-10-16 02:06:53,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:06:53,102 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:06:53,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:06:53,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1746453711, now seen corresponding path program 1 times [2021-10-16 02:06:53,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:06:53,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326894169] [2021-10-16 02:06:53,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:53,103 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:06:53,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:06:53,104 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:06:53,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-16 02:06:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:53,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:06:53,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:53,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:53,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:54,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:54,075 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:06:54,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326894169] [2021-10-16 02:06:54,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326894169] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:06:54,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:06:54,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-16 02:06:54,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918037711] [2021-10-16 02:06:54,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:06:54,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:06:54,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:06:54,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:06:54,077 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:54,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:06:54,262 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2021-10-16 02:06:54,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:06:54,267 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-16 02:06:54,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:06:54,268 INFO L225 Difference]: With dead ends: 116 [2021-10-16 02:06:54,268 INFO L226 Difference]: Without dead ends: 114 [2021-10-16 02:06:54,269 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 92.7ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:06:54,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-16 02:06:54,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 95. [2021-10-16 02:06:54,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 86 states have (on average 1.186046511627907) internal successors, (102), 94 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 02:06:54,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2021-10-16 02:06:54,277 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 34 [2021-10-16 02:06:54,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:06:54,278 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2021-10-16 02:06:54,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:54,278 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2021-10-16 02:06:54,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-16 02:06:54,278 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:06:54,278 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:06:54,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:54,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:06:54,479 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:06:54,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:06:54,480 INFO L82 PathProgramCache]: Analyzing trace with hash -484060946, now seen corresponding path program 1 times [2021-10-16 02:06:54,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:06:54,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068572521] [2021-10-16 02:06:54,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:54,480 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:06:54,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:06:54,481 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:06:54,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-16 02:06:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:55,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:06:55,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:55,533 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:55,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:55,770 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:55,770 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:06:55,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068572521] [2021-10-16 02:06:55,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068572521] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:06:55,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1622907775] [2021-10-16 02:06:55,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:55,771 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:06:55,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:06:55,772 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:06:55,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2021-10-16 02:06:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:56,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:06:56,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:57,102 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:57,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:57,265 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:57,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1622907775] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:06:57,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483800713] [2021-10-16 02:06:57,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:57,266 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:06:57,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:06:57,271 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:06:57,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-16 02:06:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:58,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 02:06:58,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:06:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-16 02:06:58,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:06:58,851 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-16 02:06:58,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483800713] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:06:58,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-10-16 02:06:58,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 6] imperfect sequences [8, 8, 8, 8] total 21 [2021-10-16 02:06:58,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815818156] [2021-10-16 02:06:58,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 02:06:58,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:06:58,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 02:06:58,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-10-16 02:06:58,853 INFO L87 Difference]: Start difference. First operand 95 states and 102 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:59,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:06:59,345 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2021-10-16 02:06:59,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:06:59,348 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 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 02:06:59,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:06:59,349 INFO L225 Difference]: With dead ends: 113 [2021-10-16 02:06:59,349 INFO L226 Difference]: Without dead ends: 111 [2021-10-16 02:06:59,350 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 705.9ms TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2021-10-16 02:06:59,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-16 02:06:59,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 87. [2021-10-16 02:06:59,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 86 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:59,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2021-10-16 02:06:59,358 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 35 [2021-10-16 02:06:59,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:06:59,358 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2021-10-16 02:06:59,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:59,359 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2021-10-16 02:06:59,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-16 02:06:59,359 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:06:59,359 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 02:06:59,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:59,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:59,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-16 02:06:59,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:06:59,965 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:06:59,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:06:59,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1694514003, now seen corresponding path program 1 times [2021-10-16 02:06:59,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:06:59,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067402047] [2021-10-16 02:06:59,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:59,966 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:06:59,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:06:59,967 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:06:59,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-16 02:07:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:00,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:07:00,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:01,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:01,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:01,372 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:07:01,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067402047] [2021-10-16 02:07:01,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067402047] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:01,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:07:01,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-16 02:07:01,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350761285] [2021-10-16 02:07:01,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 02:07:01,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:07:01,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 02:07:01,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:07:01,376 INFO L87 Difference]: Start difference. First operand 87 states and 93 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:02,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:02,065 INFO L93 Difference]: Finished difference Result 227 states and 241 transitions. [2021-10-16 02:07:02,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-16 02:07:02,065 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 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 02:07:02,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:02,067 INFO L225 Difference]: With dead ends: 227 [2021-10-16 02:07:02,067 INFO L226 Difference]: Without dead ends: 225 [2021-10-16 02:07:02,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 348.4ms TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2021-10-16 02:07:02,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-10-16 02:07:02,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 137. [2021-10-16 02:07:02,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 129 states have (on average 1.2015503875968991) internal successors, (155), 136 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:02,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 155 transitions. [2021-10-16 02:07:02,095 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 155 transitions. Word has length 35 [2021-10-16 02:07:02,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:02,095 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 155 transitions. [2021-10-16 02:07:02,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:02,096 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 155 transitions. [2021-10-16 02:07:02,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-16 02:07:02,097 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:02,097 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 02:07:02,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:02,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:07:02,307 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:07:02,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:02,307 INFO L82 PathProgramCache]: Analyzing trace with hash 635482230, now seen corresponding path program 1 times [2021-10-16 02:07:02,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:07:02,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905593471] [2021-10-16 02:07:02,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:02,308 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:07:02,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:07:02,309 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:07:02,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-16 02:07:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:03,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:07:03,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:03,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:03,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:03,920 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:07:03,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905593471] [2021-10-16 02:07:03,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905593471] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:03,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:07:03,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2021-10-16 02:07:03,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320354193] [2021-10-16 02:07:03,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-16 02:07:03,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:07:03,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-16 02:07:03,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:07:03,922 INFO L87 Difference]: Start difference. First operand 137 states and 155 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:04,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:04,122 INFO L93 Difference]: Finished difference Result 164 states and 186 transitions. [2021-10-16 02:07:04,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:07:04,123 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 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 02:07:04,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:04,124 INFO L225 Difference]: With dead ends: 164 [2021-10-16 02:07:04,124 INFO L226 Difference]: Without dead ends: 162 [2021-10-16 02:07:04,125 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 251.5ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:07:04,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-16 02:07:04,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 135. [2021-10-16 02:07:04,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 128 states have (on average 1.1796875) internal successors, (151), 134 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:04,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 151 transitions. [2021-10-16 02:07:04,141 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 151 transitions. Word has length 37 [2021-10-16 02:07:04,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:04,141 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 151 transitions. [2021-10-16 02:07:04,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:04,141 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 151 transitions. [2021-10-16 02:07:04,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-16 02:07:04,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:04,142 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] [2021-10-16 02:07:04,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:04,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:07:04,347 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:07:04,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:04,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1774883137, now seen corresponding path program 1 times [2021-10-16 02:07:04,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:07:04,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146674544] [2021-10-16 02:07:04,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:04,348 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:07:04,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:07:04,349 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:07:04,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-16 02:07:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:05,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:07:05,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:05,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:05,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:05,427 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:07:05,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146674544] [2021-10-16 02:07:05,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146674544] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:05,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:07:05,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-16 02:07:05,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579142123] [2021-10-16 02:07:05,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:07:05,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:07:05,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:07:05,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:07:05,429 INFO L87 Difference]: Start difference. First operand 135 states and 151 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:05,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:05,526 INFO L93 Difference]: Finished difference Result 194 states and 221 transitions. [2021-10-16 02:07:05,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:07:05,527 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-16 02:07:05,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:05,529 INFO L225 Difference]: With dead ends: 194 [2021-10-16 02:07:05,529 INFO L226 Difference]: Without dead ends: 192 [2021-10-16 02:07:05,530 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 56.9ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:07:05,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-16 02:07:05,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 133. [2021-10-16 02:07:05,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 127 states have (on average 1.1574803149606299) internal successors, (147), 132 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:05,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 147 transitions. [2021-10-16 02:07:05,552 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 147 transitions. Word has length 38 [2021-10-16 02:07:05,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:05,553 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 147 transitions. [2021-10-16 02:07:05,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:05,553 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 147 transitions. [2021-10-16 02:07:05,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-16 02:07:05,554 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:05,554 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:05,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:05,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:07:05,757 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:07:05,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:05,757 INFO L82 PathProgramCache]: Analyzing trace with hash -576729609, now seen corresponding path program 2 times [2021-10-16 02:07:05,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:07:05,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875095484] [2021-10-16 02:07:05,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:07:05,758 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:07:05,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:07:05,759 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:07:05,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-16 02:07:06,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:07:06,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:07:06,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 02:07:06,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:07,144 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:07,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:07,734 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:07,734 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:07:07,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875095484] [2021-10-16 02:07:07,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875095484] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:07:07,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [600418669] [2021-10-16 02:07:07,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:07:07,735 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:07:07,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:07:07,736 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:07:07,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2021-10-16 02:07:09,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:07:09,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:07:09,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:07:09,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:09,403 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:09,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:09,750 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:09,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [600418669] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:07:09,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899579315] [2021-10-16 02:07:09,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:07:09,751 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:07:09,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:07:09,752 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:07:09,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-16 02:07:10,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:07:10,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:07:10,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 02:07:10,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:11,659 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-16 02:07:11,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:11,987 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-16 02:07:11,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899579315] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:07:11,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:07:11,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10, 10, 9, 7] total 35 [2021-10-16 02:07:11,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327227640] [2021-10-16 02:07:11,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-16 02:07:11,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:07:11,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-16 02:07:11,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=959, Unknown=0, NotChecked=0, Total=1190 [2021-10-16 02:07:11,991 INFO L87 Difference]: Start difference. First operand 133 states and 147 transitions. Second operand has 35 states, 35 states have (on average 4.257142857142857) internal successors, (149), 35 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:17,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:17,717 INFO L93 Difference]: Finished difference Result 483 states and 511 transitions. [2021-10-16 02:07:17,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-16 02:07:17,718 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.257142857142857) internal successors, (149), 35 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-16 02:07:17,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:17,720 INFO L225 Difference]: With dead ends: 483 [2021-10-16 02:07:17,720 INFO L226 Difference]: Without dead ends: 481 [2021-10-16 02:07:17,722 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1458 ImplicationChecksByTransitivity, 4868.9ms TimeCoverageRelationStatistics Valid=1714, Invalid=3986, Unknown=0, NotChecked=0, Total=5700 [2021-10-16 02:07:17,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2021-10-16 02:07:17,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 125. [2021-10-16 02:07:17,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.15) internal successors, (138), 124 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:17,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 138 transitions. [2021-10-16 02:07:17,738 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 138 transitions. Word has length 39 [2021-10-16 02:07:17,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:17,739 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 138 transitions. [2021-10-16 02:07:17,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.257142857142857) internal successors, (149), 35 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:17,739 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 138 transitions. [2021-10-16 02:07:17,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-16 02:07:17,740 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:17,740 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:17,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:17,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-10-16 02:07:18,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (42)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:18,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:07:18,351 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:07:18,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:18,352 INFO L82 PathProgramCache]: Analyzing trace with hash 813201821, now seen corresponding path program 1 times [2021-10-16 02:07:18,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:07:18,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795730891] [2021-10-16 02:07:18,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:18,352 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:07:18,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:07:18,354 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:07:18,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-16 02:07:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:19,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:07:19,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:19,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:19,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:19,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:19,576 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:07:19,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795730891] [2021-10-16 02:07:19,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795730891] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:19,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:07:19,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-16 02:07:19,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118495710] [2021-10-16 02:07:19,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:07:19,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:07:19,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:07:19,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:07:19,578 INFO L87 Difference]: Start difference. First operand 125 states and 138 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:19,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:19,791 INFO L93 Difference]: Finished difference Result 190 states and 213 transitions. [2021-10-16 02:07:19,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:07:19,792 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-16 02:07:19,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:19,793 INFO L225 Difference]: With dead ends: 190 [2021-10-16 02:07:19,793 INFO L226 Difference]: Without dead ends: 188 [2021-10-16 02:07:19,794 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 88.2ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:07:19,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-16 02:07:19,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 136. [2021-10-16 02:07:19,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 131 states have (on average 1.1526717557251909) internal successors, (151), 135 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:19,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 151 transitions. [2021-10-16 02:07:19,817 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 151 transitions. Word has length 39 [2021-10-16 02:07:19,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:19,817 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 151 transitions. [2021-10-16 02:07:19,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:19,818 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 151 transitions. [2021-10-16 02:07:19,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-16 02:07:19,818 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:19,819 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] [2021-10-16 02:07:19,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2021-10-16 02:07:20,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:07:20,035 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:07:20,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:20,035 INFO L82 PathProgramCache]: Analyzing trace with hash -560543098, now seen corresponding path program 1 times [2021-10-16 02:07:20,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:07:20,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001502360] [2021-10-16 02:07:20,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:20,036 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:07:20,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:07:20,037 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:07:20,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-16 02:07:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:21,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:07:21,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:21,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:21,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:21,503 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 02:07:21,503 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:07:21,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001502360] [2021-10-16 02:07:21,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001502360] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:21,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:07:21,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-16 02:07:21,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071397648] [2021-10-16 02:07:21,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 02:07:21,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:07:21,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 02:07:21,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:07:21,506 INFO L87 Difference]: Start difference. First operand 136 states and 151 transitions. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:22,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:22,284 INFO L93 Difference]: Finished difference Result 277 states and 300 transitions. [2021-10-16 02:07:22,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-16 02:07:22,284 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 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 02:07:22,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:22,287 INFO L225 Difference]: With dead ends: 277 [2021-10-16 02:07:22,287 INFO L226 Difference]: Without dead ends: 275 [2021-10-16 02:07:22,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 364.6ms TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2021-10-16 02:07:22,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-10-16 02:07:22,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 145. [2021-10-16 02:07:22,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 140 states have (on average 1.15) internal successors, (161), 144 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:22,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 161 transitions. [2021-10-16 02:07:22,317 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 161 transitions. Word has length 40 [2021-10-16 02:07:22,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:22,317 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 161 transitions. [2021-10-16 02:07:22,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:22,318 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 161 transitions. [2021-10-16 02:07:22,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-16 02:07:22,318 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:22,319 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:22,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2021-10-16 02:07:22,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:07:22,535 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:07:22,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:22,535 INFO L82 PathProgramCache]: Analyzing trace with hash 375780089, now seen corresponding path program 1 times [2021-10-16 02:07:22,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:07:22,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721558414] [2021-10-16 02:07:22,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:22,536 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:07:22,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:07:22,537 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:07:22,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-16 02:07:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:23,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-16 02:07:23,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:25,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:25,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:26,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:26,256 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:07:26,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721558414] [2021-10-16 02:07:26,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1721558414] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:07:26,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1976420083] [2021-10-16 02:07:26,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:26,256 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:07:26,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:07:26,257 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:07:26,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2021-10-16 02:07:27,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:27,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-16 02:07:27,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:29,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:29,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:29,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1976420083] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:07:29,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537373297] [2021-10-16 02:07:29,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:29,619 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:07:29,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:07:29,620 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:07:29,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-16 02:07:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:31,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-16 02:07:31,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:33,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:33,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:33,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:33,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537373297] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:07:33,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:07:33,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7, 14, 7, 14, 8] total 35 [2021-10-16 02:07:33,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395537864] [2021-10-16 02:07:33,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-16 02:07:33,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:07:33,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-16 02:07:33,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=944, Unknown=0, NotChecked=0, Total=1190 [2021-10-16 02:07:33,430 INFO L87 Difference]: Start difference. First operand 145 states and 161 transitions. Second operand has 35 states, 35 states have (on average 3.4571428571428573) internal successors, (121), 35 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:42,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:42,970 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2021-10-16 02:07:42,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-16 02:07:42,972 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.4571428571428573) internal successors, (121), 35 states have internal predecessors, (121), 0 states have call successors, (0), 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 02:07:42,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:42,974 INFO L225 Difference]: With dead ends: 154 [2021-10-16 02:07:42,974 INFO L226 Difference]: Without dead ends: 150 [2021-10-16 02:07:42,977 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 201 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 9891.6ms TimeCoverageRelationStatistics Valid=911, Invalid=2059, Unknown=0, NotChecked=0, Total=2970 [2021-10-16 02:07:42,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-16 02:07:42,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 141. [2021-10-16 02:07:43,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 138 states have (on average 1.1231884057971016) internal successors, (155), 140 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:43,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 155 transitions. [2021-10-16 02:07:43,003 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 155 transitions. Word has length 40 [2021-10-16 02:07:43,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:43,004 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 155 transitions. [2021-10-16 02:07:43,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.4571428571428573) internal successors, (121), 35 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:43,004 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 155 transitions. [2021-10-16 02:07:43,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-16 02:07:43,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:43,005 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:43,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (47)] Ended with exit code 0 [2021-10-16 02:07:43,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:43,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-10-16 02:07:43,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:07:43,612 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:07:43,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:43,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1394778411, now seen corresponding path program 1 times [2021-10-16 02:07:43,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:07:43,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405135160] [2021-10-16 02:07:43,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:43,614 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:07:43,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:07:43,615 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:07:43,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-16 02:07:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:44,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:07:44,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:44,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:07:44,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:45,104 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:07:45,105 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:07:45,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405135160] [2021-10-16 02:07:45,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405135160] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:45,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:07:45,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-16 02:07:45,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685341104] [2021-10-16 02:07:45,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:07:45,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:07:45,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:07:45,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:07:45,106 INFO L87 Difference]: Start difference. First operand 141 states and 155 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:45,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:45,324 INFO L93 Difference]: Finished difference Result 167 states and 184 transitions. [2021-10-16 02:07:45,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:07:45,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 45 [2021-10-16 02:07:45,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:45,326 INFO L225 Difference]: With dead ends: 167 [2021-10-16 02:07:45,326 INFO L226 Difference]: Without dead ends: 165 [2021-10-16 02:07:45,326 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 114.0ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:07:45,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-16 02:07:45,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 115. [2021-10-16 02:07:45,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 113 states have (on average 1.0884955752212389) internal successors, (123), 114 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:45,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 123 transitions. [2021-10-16 02:07:45,346 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 123 transitions. Word has length 45 [2021-10-16 02:07:45,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:45,347 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 123 transitions. [2021-10-16 02:07:45,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:45,347 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 123 transitions. [2021-10-16 02:07:45,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-16 02:07:45,348 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:45,348 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:45,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2021-10-16 02:07:45,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:07:45,567 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:07:45,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:45,568 INFO L82 PathProgramCache]: Analyzing trace with hash 330875454, now seen corresponding path program 1 times [2021-10-16 02:07:45,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:07:45,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673150643] [2021-10-16 02:07:45,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:45,569 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:07:45,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:07:45,570 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:07:45,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-16 02:07:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:46,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:07:46,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:47,454 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:47,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:47,849 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:47,849 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:07:47,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673150643] [2021-10-16 02:07:47,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673150643] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:07:47,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [935312882] [2021-10-16 02:07:47,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:47,850 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:07:47,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:07:47,851 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:07:47,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (51)] Waiting until timeout for monitored process [2021-10-16 02:07:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:49,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:07:49,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:49,927 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-16 02:07:49,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:50,054 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-16 02:07:50,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [935312882] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:50,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:07:50,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [10, 10] total 20 [2021-10-16 02:07:50,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930589434] [2021-10-16 02:07:50,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:07:50,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:07:50,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:07:50,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-16 02:07:50,056 INFO L87 Difference]: Start difference. First operand 115 states and 123 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:50,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:50,239 INFO L93 Difference]: Finished difference Result 154 states and 165 transitions. [2021-10-16 02:07:50,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:07:50,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 47 [2021-10-16 02:07:50,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:50,240 INFO L225 Difference]: With dead ends: 154 [2021-10-16 02:07:50,241 INFO L226 Difference]: Without dead ends: 152 [2021-10-16 02:07:50,241 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 477.6ms TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-10-16 02:07:50,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-16 02:07:50,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 119. [2021-10-16 02:07:50,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 117 states have (on average 1.0854700854700854) internal successors, (127), 118 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:50,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2021-10-16 02:07:50,257 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 47 [2021-10-16 02:07:50,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:50,258 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2021-10-16 02:07:50,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:50,258 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2021-10-16 02:07:50,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-16 02:07:50,259 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:50,259 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:50,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2021-10-16 02:07:50,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (51)] Ended with exit code 0 [2021-10-16 02:07:50,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:07:50,663 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:07:50,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:50,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1859558781, now seen corresponding path program 1 times [2021-10-16 02:07:50,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:07:50,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247671986] [2021-10-16 02:07:50,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:50,664 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:07:50,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:07:50,665 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:07:50,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-16 02:07:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:51,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:07:51,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:52,485 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:52,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:52,882 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:52,882 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:07:52,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247671986] [2021-10-16 02:07:52,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247671986] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:07:52,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2021209607] [2021-10-16 02:07:52,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:52,882 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:07:52,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:07:52,883 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:07:52,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (53)] Waiting until timeout for monitored process [2021-10-16 02:07:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:54,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:07:54,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:55,147 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:55,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:55,334 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:55,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2021209607] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:07:55,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256695451] [2021-10-16 02:07:55,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:55,335 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:07:55,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:07:55,336 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:07:55,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-16 02:07:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:57,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 02:07:57,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:57,713 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-16 02:07:57,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:57,947 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-16 02:07:57,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256695451] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:07:57,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:07:57,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 7] total 27 [2021-10-16 02:07:57,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830915864] [2021-10-16 02:07:57,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-16 02:07:57,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:07:57,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-16 02:07:57,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2021-10-16 02:07:57,950 INFO L87 Difference]: Start difference. First operand 119 states and 127 transitions. Second operand has 27 states, 27 states have (on average 5.851851851851852) internal successors, (158), 27 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:10,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:10,813 INFO L93 Difference]: Finished difference Result 700 states and 785 transitions. [2021-10-16 02:08:10,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-10-16 02:08:10,814 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.851851851851852) internal successors, (158), 27 states have internal predecessors, (158), 0 states have call successors, (0), 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 49 [2021-10-16 02:08:10,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:10,817 INFO L225 Difference]: With dead ends: 700 [2021-10-16 02:08:10,818 INFO L226 Difference]: Without dead ends: 698 [2021-10-16 02:08:10,823 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4414 ImplicationChecksByTransitivity, 9984.0ms TimeCoverageRelationStatistics Valid=2887, Invalid=10453, Unknown=0, NotChecked=0, Total=13340 [2021-10-16 02:08:10,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2021-10-16 02:08:10,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 247. [2021-10-16 02:08:10,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 245 states have (on average 1.1346938775510205) internal successors, (278), 246 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:10,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 278 transitions. [2021-10-16 02:08:10,890 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 278 transitions. Word has length 49 [2021-10-16 02:08:10,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:10,890 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 278 transitions. [2021-10-16 02:08:10,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.851851851851852) internal successors, (158), 27 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:10,891 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 278 transitions. [2021-10-16 02:08:10,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-16 02:08:10,892 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:10,892 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:10,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:11,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (53)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:11,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2021-10-16 02:08:11,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:08:11,507 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:08:11,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:11,508 INFO L82 PathProgramCache]: Analyzing trace with hash -582689157, now seen corresponding path program 1 times [2021-10-16 02:08:11,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:08:11,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203700342] [2021-10-16 02:08:11,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:11,508 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:08:11,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:08:11,509 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:08:11,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-16 02:08:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:12,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:08:12,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:13,360 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:13,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:13,772 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:13,772 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:08:13,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203700342] [2021-10-16 02:08:13,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203700342] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:08:13,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [190104706] [2021-10-16 02:08:13,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:13,773 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:08:13,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:08:13,774 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:08:13,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (56)] Waiting until timeout for monitored process [2021-10-16 02:08:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:15,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:08:15,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:15,940 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-16 02:08:15,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:16,095 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-16 02:08:16,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [190104706] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:16,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:08:16,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [10, 10] total 20 [2021-10-16 02:08:16,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898948415] [2021-10-16 02:08:16,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:08:16,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:08:16,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:08:16,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-16 02:08:16,097 INFO L87 Difference]: Start difference. First operand 247 states and 278 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:16,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:16,319 INFO L93 Difference]: Finished difference Result 470 states and 523 transitions. [2021-10-16 02:08:16,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:08:16,320 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-16 02:08:16,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:16,322 INFO L225 Difference]: With dead ends: 470 [2021-10-16 02:08:16,323 INFO L226 Difference]: Without dead ends: 468 [2021-10-16 02:08:16,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 478.0ms TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-10-16 02:08:16,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-10-16 02:08:16,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 224. [2021-10-16 02:08:16,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 222 states have (on average 1.135135135135135) internal successors, (252), 223 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:16,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 252 transitions. [2021-10-16 02:08:16,403 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 252 transitions. Word has length 52 [2021-10-16 02:08:16,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:16,403 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 252 transitions. [2021-10-16 02:08:16,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:16,404 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 252 transitions. [2021-10-16 02:08:16,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-16 02:08:16,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:16,406 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:16,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (56)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:16,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (55)] Ended with exit code 0 [2021-10-16 02:08:16,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:08:16,807 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:08:16,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:16,808 INFO L82 PathProgramCache]: Analyzing trace with hash 219755164, now seen corresponding path program 1 times [2021-10-16 02:08:16,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:08:16,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242476604] [2021-10-16 02:08:16,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:16,808 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:08:16,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:08:16,809 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:08:16,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-16 02:08:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:18,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:08:18,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:18,810 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:18,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:19,198 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:19,198 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:08:19,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242476604] [2021-10-16 02:08:19,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242476604] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:08:19,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [840503310] [2021-10-16 02:08:19,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:19,199 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:08:19,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:08:19,200 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:08:19,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (58)] Waiting until timeout for monitored process [2021-10-16 02:08:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:21,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:08:21,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:21,558 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:08:21,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:21,705 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:08:21,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [840503310] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:21,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:08:21,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [10, 10] total 20 [2021-10-16 02:08:21,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204027166] [2021-10-16 02:08:21,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:08:21,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:08:21,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:08:21,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-16 02:08:21,707 INFO L87 Difference]: Start difference. First operand 224 states and 252 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:21,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:21,955 INFO L93 Difference]: Finished difference Result 348 states and 389 transitions. [2021-10-16 02:08:21,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:08:21,956 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 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 02:08:21,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:21,957 INFO L225 Difference]: With dead ends: 348 [2021-10-16 02:08:21,958 INFO L226 Difference]: Without dead ends: 346 [2021-10-16 02:08:21,959 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 504.1ms TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-10-16 02:08:21,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-10-16 02:08:22,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 148. [2021-10-16 02:08:22,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.08843537414966) internal successors, (160), 147 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:22,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 160 transitions. [2021-10-16 02:08:22,005 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 160 transitions. Word has length 54 [2021-10-16 02:08:22,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:22,005 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 160 transitions. [2021-10-16 02:08:22,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:22,006 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 160 transitions. [2021-10-16 02:08:22,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-16 02:08:22,007 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:22,007 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:22,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (58)] Ended with exit code 0 [2021-10-16 02:08:22,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2021-10-16 02:08:22,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:08:22,415 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-10-16 02:08:22,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:22,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1994644805, now seen corresponding path program 1 times [2021-10-16 02:08:22,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:08:22,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639263208] [2021-10-16 02:08:22,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:22,416 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:08:22,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:08:22,418 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:08:22,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-16 02:08:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:23,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-16 02:08:23,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:26,676 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 374 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:26,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:28,846 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 374 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:28,847 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:08:28,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639263208] [2021-10-16 02:08:28,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1639263208] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:08:28,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [569333570] [2021-10-16 02:08:28,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:28,847 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:08:28,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:08:28,848 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:08:28,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (60)] Waiting until timeout for monitored process [2021-10-16 02:08:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:31,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-16 02:08:31,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:34,389 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 374 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:34,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:34,958 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 374 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:34,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [569333570] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:08:34,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194772952] [2021-10-16 02:08:34,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:34,959 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:08:34,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:08:34,960 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:08:34,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-16 02:08:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:36,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 02:08:36,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:38,371 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-10-16 02:08:38,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:38,786 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-10-16 02:08:38,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194772952] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:08:38,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:08:38,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 18, 18, 10, 7] total 66 [2021-10-16 02:08:38,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697546170] [2021-10-16 02:08:38,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-10-16 02:08:38,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:08:38,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-10-16 02:08:38,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=749, Invalid=3541, Unknown=0, NotChecked=0, Total=4290 [2021-10-16 02:08:38,790 INFO L87 Difference]: Start difference. First operand 148 states and 160 transitions. Second operand has 66 states, 66 states have (on average 5.787878787878788) internal successors, (382), 66 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:10:07,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:10:07,293 INFO L93 Difference]: Finished difference Result 1525 states and 1675 transitions. [2021-10-16 02:10:07,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2021-10-16 02:10:07,294 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 5.787878787878788) internal successors, (382), 66 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-10-16 02:10:07,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:10:07,294 INFO L225 Difference]: With dead ends: 1525 [2021-10-16 02:10:07,295 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:10:07,308 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 899 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27629 ImplicationChecksByTransitivity, 79865.4ms TimeCoverageRelationStatistics Valid=17164, Invalid=64346, Unknown=0, NotChecked=0, Total=81510 [2021-10-16 02:10:07,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:10:07,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:10:07,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:10:07,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:10:07,309 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 101 [2021-10-16 02:10:07,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:10:07,310 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:10:07,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 5.787878787878788) internal successors, (382), 66 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:10:07,310 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:10:07,310 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:10:07,321 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:07,322 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:07,322 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:07,323 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:07,323 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:07,323 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:07,323 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:07,323 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:07,324 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:07,324 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:07,324 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:07,325 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:07,325 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:07,325 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:07,325 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:07,325 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:07,326 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:07,326 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:10:07,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-10-16 02:10:07,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (60)] Forceful destruction successful, exit code 0 [2021-10-16 02:10:07,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-16 02:10:07,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:10:07,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:10:07,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:10:08,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:10:17,429 WARN L207 SmtUtils]: Spent 9.43 s on a formula simplification. DAG size of input: 607 DAG size of output: 496 [2021-10-16 02:10:17,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:10:25,720 WARN L207 SmtUtils]: Spent 8.27 s on a formula simplification. DAG size of input: 615 DAG size of output: 534 [2021-10-16 02:10:25,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:10:25,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:10:26,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:10:43,168 WARN L207 SmtUtils]: Spent 16.43 s on a formula simplification. DAG size of input: 486 DAG size of output: 110 [2021-10-16 02:10:59,052 WARN L207 SmtUtils]: Spent 15.88 s on a formula simplification. DAG size of input: 523 DAG size of output: 91 [2021-10-16 02:11:02,369 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 97) no Hoare annotation was computed. [2021-10-16 02:11:02,370 INFO L857 garLoopResultBuilder]: For program point L85(line 85) no Hoare annotation was computed. [2021-10-16 02:11:02,370 INFO L857 garLoopResultBuilder]: For program point L234(lines 234 338) no Hoare annotation was computed. [2021-10-16 02:11:02,370 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 272) no Hoare annotation was computed. [2021-10-16 02:11:02,370 INFO L857 garLoopResultBuilder]: For program point L135(lines 135 397) no Hoare annotation was computed. [2021-10-16 02:11:02,371 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:11:02,371 INFO L857 garLoopResultBuilder]: For program point L284(line 284) no Hoare annotation was computed. [2021-10-16 02:11:02,371 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 433) no Hoare annotation was computed. [2021-10-16 02:11:02,371 INFO L857 garLoopResultBuilder]: For program point L384(lines 384 393) no Hoare annotation was computed. [2021-10-16 02:11:02,371 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 255) no Hoare annotation was computed. [2021-10-16 02:11:02,372 INFO L853 garLoopResultBuilder]: At program point L401(lines 131 402) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 (_ bv1 32))) (.cse1 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 (_ bv1 32))) (.cse3 (bvadd ULTIMATE.start_main_~main__cp~0 (_ bv1 32))) (.cse2 (bvsle ULTIMATE.start_main_~main__scheme~0 (_ bv1000000 32))) (.cse4 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv1 32))) (.cse5 (not (= ULTIMATE.start_main_~main__scheme~0 (_ bv0 32)))) (.cse6 (bvsge ULTIMATE.start_main_~main__scheme~0 (_ bv0 32))) (.cse8 (bvsle ULTIMATE.start_main_~main__urilen~0 (_ bv1000000 32))) (.cse9 (bvsgt ULTIMATE.start_main_~main__urilen~0 (_ bv0 32))) (.cse10 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~3 (_ bv1 32)))) (or (let ((.cse7 (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~main__cp~0))) (and (bvsgt ULTIMATE.start_main_~main__tokenlen~0 (_ bv0 32)) .cse0 .cse1 .cse2 (bvslt .cse3 ULTIMATE.start_main_~main__urilen~0) .cse4 .cse5 .cse6 (bvsle (_ bv0 32) .cse7) .cse8 (bvsle ULTIMATE.start_main_~main__tokenlen~0 (_ bv1000000 32)) .cse9 (bvslt .cse7 ULTIMATE.start_main_~main__urilen~0) .cse10)) (and .cse0 .cse1 (= ULTIMATE.start_main_~main__urilen~0 .cse3) .cse2 .cse4 .cse5 .cse6 .cse8 .cse9 .cse10))) [2021-10-16 02:11:02,372 INFO L857 garLoopResultBuilder]: For program point L104(lines 104 411) no Hoare annotation was computed. [2021-10-16 02:11:02,372 INFO L857 garLoopResultBuilder]: For program point L71(lines 71 416) no Hoare annotation was computed. [2021-10-16 02:11:02,372 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 177) no Hoare annotation was computed. [2021-10-16 02:11:02,372 INFO L857 garLoopResultBuilder]: For program point L253(lines 253 329) no Hoare annotation was computed. [2021-10-16 02:11:02,372 INFO L857 garLoopResultBuilder]: For program point L187(lines 187 355) no Hoare annotation was computed. [2021-10-16 02:11:02,372 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION(line 386) no Hoare annotation was computed. [2021-10-16 02:11:02,372 INFO L857 garLoopResultBuilder]: For program point L270(lines 270 322) no Hoare annotation was computed. [2021-10-16 02:11:02,373 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 353) no Hoare annotation was computed. [2021-10-16 02:11:02,373 INFO L857 garLoopResultBuilder]: For program point L386(line 386) no Hoare annotation was computed. [2021-10-16 02:11:02,373 INFO L857 garLoopResultBuilder]: For program point L155(lines 155 360) no Hoare annotation was computed. [2021-10-16 02:11:02,373 INFO L857 garLoopResultBuilder]: For program point L23(lines 23 438) no Hoare annotation was computed. [2021-10-16 02:11:02,373 INFO L857 garLoopResultBuilder]: For program point L255(line 255) no Hoare annotation was computed. [2021-10-16 02:11:02,373 INFO L857 garLoopResultBuilder]: For program point L189(line 189) no Hoare annotation was computed. [2021-10-16 02:11:02,373 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 403) no Hoare annotation was computed. [2021-10-16 02:11:02,373 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 214) no Hoare annotation was computed. [2021-10-16 02:11:02,373 INFO L857 garLoopResultBuilder]: For program point L272(line 272) no Hoare annotation was computed. [2021-10-16 02:11:02,374 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 435) no Hoare annotation was computed. [2021-10-16 02:11:02,374 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:11:02,374 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 189) no Hoare annotation was computed. [2021-10-16 02:11:02,374 INFO L857 garLoopResultBuilder]: For program point L157(line 157) no Hoare annotation was computed. [2021-10-16 02:11:02,374 INFO L857 garLoopResultBuilder]: For program point L372(lines 372 395) no Hoare annotation was computed. [2021-10-16 02:11:02,374 INFO L857 garLoopResultBuilder]: For program point L306(lines 306 316) no Hoare annotation was computed. [2021-10-16 02:11:02,374 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 344) no Hoare annotation was computed. [2021-10-16 02:11:02,374 INFO L857 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-10-16 02:11:02,375 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 432) no Hoare annotation was computed. [2021-10-16 02:11:02,375 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 113) no Hoare annotation was computed. [2021-10-16 02:11:02,375 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 331) no Hoare annotation was computed. [2021-10-16 02:11:02,375 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 357) no Hoare annotation was computed. [2021-10-16 02:11:02,375 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 284) no Hoare annotation was computed. [2021-10-16 02:11:02,375 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 226) no Hoare annotation was computed. [2021-10-16 02:11:02,375 INFO L857 garLoopResultBuilder]: For program point L374(line 374) no Hoare annotation was computed. [2021-10-16 02:11:02,375 INFO L857 garLoopResultBuilder]: For program point L308(line 308) no Hoare annotation was computed. [2021-10-16 02:11:02,375 INFO L857 garLoopResultBuilder]: For program point L143(lines 143 362) no Hoare annotation was computed. [2021-10-16 02:11:02,376 INFO L857 garLoopResultBuilder]: For program point L226(line 226) no Hoare annotation was computed. [2021-10-16 02:11:02,376 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 145) no Hoare annotation was computed. [2021-10-16 02:11:02,376 INFO L857 garLoopResultBuilder]: For program point L61(lines 61 427) no Hoare annotation was computed. [2021-10-16 02:11:02,376 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:11:02,376 INFO L857 garLoopResultBuilder]: For program point L243(line 243) no Hoare annotation was computed. [2021-10-16 02:11:02,376 INFO L857 garLoopResultBuilder]: For program point L177(line 177) no Hoare annotation was computed. [2021-10-16 02:11:02,376 INFO L857 garLoopResultBuilder]: For program point L111(lines 111 405) no Hoare annotation was computed. [2021-10-16 02:11:02,376 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 308) no Hoare annotation was computed. [2021-10-16 02:11:02,377 INFO L853 garLoopResultBuilder]: At program point L392(lines 129 403) the Hoare annotation is: (let ((.cse0 (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~main__cp~0))) (and (bvsgt ULTIMATE.start_main_~main__tokenlen~0 (_ bv0 32)) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 (_ bv1 32)) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 (_ bv1 32)) (bvsle ULTIMATE.start_main_~main__scheme~0 (_ bv1000000 32)) (bvslt ULTIMATE.start_main_~main__cp~0 ULTIMATE.start_main_~main__urilen~0) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv1 32)) (not (= ULTIMATE.start_main_~main__scheme~0 (_ bv0 32))) (bvsge ULTIMATE.start_main_~main__scheme~0 (_ bv0 32)) (bvsle (_ bv0 32) .cse0) (bvsle ULTIMATE.start_main_~main__urilen~0 (_ bv1000000 32)) (bvsle ULTIMATE.start_main_~main__tokenlen~0 (_ bv1000000 32)) (bvslt .cse0 ULTIMATE.start_main_~main__urilen~0) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~3 (_ bv1 32)))) [2021-10-16 02:11:02,377 INFO L857 garLoopResultBuilder]: For program point L194(lines 194 354) no Hoare annotation was computed. [2021-10-16 02:11:02,377 INFO L857 garLoopResultBuilder]: For program point L95(lines 95 412) no Hoare annotation was computed. [2021-10-16 02:11:02,377 INFO L857 garLoopResultBuilder]: For program point L29(lines 29 437) no Hoare annotation was computed. [2021-10-16 02:11:02,377 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 125) no Hoare annotation was computed. [2021-10-16 02:11:02,377 INFO L857 garLoopResultBuilder]: For program point L145(line 145) no Hoare annotation was computed. [2021-10-16 02:11:02,377 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 296) no Hoare annotation was computed. [2021-10-16 02:11:02,378 INFO L853 garLoopResultBuilder]: At program point L327(lines 262 328) the Hoare annotation is: (let ((.cse6 (= ULTIMATE.start_main_~main__c~0 (_ bv0 32)))) (let ((.cse2 (let ((.cse25 (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~main__cp~0))) (let ((.cse7 (bvsgt ULTIMATE.start_main_~main__tokenlen~0 (_ bv0 32))) (.cse8 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 (_ bv1 32))) (.cse9 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~6 (_ bv0 32)))) (.cse10 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~7 (_ bv1 32))) (.cse11 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 (_ bv1 32))) (.cse12 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~9 (_ bv0 32)))) (.cse13 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~10 (_ bv0 32)))) (.cse14 (bvsle ULTIMATE.start_main_~main__scheme~0 (_ bv1000000 32))) (.cse15 (bvslt (bvadd ULTIMATE.start_main_~main__cp~0 (_ bv1 32)) ULTIMATE.start_main_~main__urilen~0)) (.cse16 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~8 (_ bv1 32))) (.cse17 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv1 32))) (.cse18 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~4 (_ bv1 32))) (.cse19 (bvsge .cse25 (_ bv0 32))) (.cse20 (bvsge ULTIMATE.start_main_~main__scheme~0 (_ bv0 32))) (.cse21 (bvsle .cse25 (_ bv1000000 32))) (.cse22 (bvsle ULTIMATE.start_main_~main__tokenlen~0 (_ bv1000000 32))) (.cse23 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~5 (_ bv0 32)))) (.cse24 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~3 (_ bv1 32)))) (or (and .cse7 .cse6 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 (bvslt ULTIMATE.start_main_~main__c~0 (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~main__tokenlen~0)) .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24) (and .cse7 .cse8 .cse9 .cse10 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~12 (_ bv1 32)) .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24)))))) (let ((.cse0 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~10 (_ bv1 32))) (.cse3 (and .cse6 .cse2)) (.cse1 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 (_ bv1 32))) (.cse4 (bvsle ULTIMATE.start_main_~main__urilen~0 (_ bv1000000 32))) (.cse5 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~11 (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~__VERIFIER_assert__cond~9 (_ bv1 32)) .cse0 (or (and .cse1 (= ULTIMATE.start_main_~main__c~0 (_ bv1 32)) .cse2) .cse3) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~6 (_ bv1 32)) (bvsle (_ bv0 32) (bvadd ULTIMATE.start_main_~main__cp~0 (_ bv4294967294 32))) .cse4 .cse5) (and .cse0 (or .cse3 (and (bvsle (_ bv0 32) ULTIMATE.start_main_~main__c~0) .cse1 .cse2)) (bvsle (_ bv0 32) (bvadd (_ bv4294967293 32) ULTIMATE.start_main_~main__cp~0)) .cse4 .cse5))))) [2021-10-16 02:11:02,378 INFO L857 garLoopResultBuilder]: For program point L294(lines 294 318) no Hoare annotation was computed. [2021-10-16 02:11:02,378 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 359) no Hoare annotation was computed. [2021-10-16 02:11:02,378 INFO L857 garLoopResultBuilder]: For program point L63(lines 63 422) no Hoare annotation was computed. [2021-10-16 02:11:02,378 INFO L853 garLoopResultBuilder]: At program point L410(lines 104 411) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv1 32))) (.cse1 (bvsle ULTIMATE.start_main_~main__urilen~0 (_ bv1000000 32)))) (or (and .cse0 .cse1 (bvsgt ULTIMATE.start_main_~main__urilen~0 (_ bv0 32))) (and .cse0 (or (bvslt (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~main__urilen~0) ULTIMATE.start_main_~main__scheme~0) (not (bvsge ULTIMATE.start_main_~main__scheme~0 (_ bv0 32))) (= ULTIMATE.start_main_~main__scheme~0 (_ bv0 32))) .cse1))) [2021-10-16 02:11:02,378 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 346) no Hoare annotation was computed. [2021-10-16 02:11:02,379 INFO L857 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2021-10-16 02:11:02,379 INFO L857 garLoopResultBuilder]: For program point L47(lines 47 434) no Hoare annotation was computed. [2021-10-16 02:11:02,379 INFO L857 garLoopResultBuilder]: For program point L262(lines 262 328) no Hoare annotation was computed. [2021-10-16 02:11:02,379 INFO L857 garLoopResultBuilder]: For program point L97(line 97) no Hoare annotation was computed. [2021-10-16 02:11:02,379 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 157) no Hoare annotation was computed. [2021-10-16 02:11:02,379 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 374) no Hoare annotation was computed. [2021-10-16 02:11:02,380 INFO L857 garLoopResultBuilder]: For program point L296(line 296) no Hoare annotation was computed. [2021-10-16 02:11:02,380 INFO L857 garLoopResultBuilder]: For program point L65(lines 65 417) no Hoare annotation was computed. [2021-10-16 02:11:02,380 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:11:02,380 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 85) no Hoare annotation was computed. [2021-10-16 02:11:02,380 INFO L857 garLoopResultBuilder]: For program point L214(line 214) no Hoare annotation was computed. [2021-10-16 02:11:02,380 INFO L857 garLoopResultBuilder]: For program point L83(lines 83 414) no Hoare annotation was computed. [2021-10-16 02:11:02,381 INFO L853 garLoopResultBuilder]: At program point L315(lines 230 344) the Hoare annotation is: (let ((.cse25 (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~main__cp~0))) (let ((.cse3 (bvsgt ULTIMATE.start_main_~main__tokenlen~0 (_ bv0 32))) (.cse4 (= ULTIMATE.start_main_~main__c~0 (_ bv0 32))) (.cse2 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~9 (_ bv1 32))) (.cse5 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~7 (_ bv1 32))) (.cse6 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~2 (_ bv1 32))) (.cse7 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~9 (_ bv0 32)))) (.cse8 (bvsle ULTIMATE.start_main_~main__scheme~0 (_ bv1000000 32))) (.cse9 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~6 (_ bv1 32))) (.cse10 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~8 (_ bv1 32))) (.cse11 (bvslt ULTIMATE.start_main_~main__cp~0 ULTIMATE.start_main_~main__urilen~0)) (.cse12 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv1 32))) (.cse13 (let ((.cse26 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 (_ bv1 32))) (.cse27 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~6 (_ bv0 32)))) (.cse28 (or (bvslt (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~main__scheme~0) ULTIMATE.start_main_~main__urilen~0) (bvslt (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~main__urilen~0) ULTIMATE.start_main_~main__scheme~0))) (.cse29 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~3 (_ bv1 32)))) (or (and (bvsle (_ bv0 32) (bvadd ULTIMATE.start_main_~main__scheme~0 (_ bv1 32))) .cse26 .cse27 .cse28 .cse29) (and .cse26 .cse27 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~17 (_ bv0 32))) .cse28 .cse29)))) (.cse14 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~4 (_ bv1 32))) (.cse15 (bvsge .cse25 (_ bv0 32))) (.cse16 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~7 (_ bv0 32)))) (.cse17 (bvsge ULTIMATE.start_main_~main__scheme~0 (_ bv0 32))) (.cse18 (not (= ULTIMATE.start_main_~main__urilen~0 (bvadd ULTIMATE.start_main_~main__cp~0 (_ bv1 32))))) (.cse19 (bvsle .cse25 (_ bv1000000 32))) (.cse20 (bvsle ULTIMATE.start_main_~main__tokenlen~0 (_ bv1000000 32))) (.cse21 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~5 (_ bv0 32))))) (let ((.cse1 (bvsle ULTIMATE.start_main_~main__urilen~0 (_ bv1000000 32))) (.cse0 (or (and (= ULTIMATE.start_main_~__VERIFIER_assert__cond~10 (_ bv1 32)) (bvsle (_ bv0 32) (bvadd (_ bv4294967293 32) ULTIMATE.start_main_~main__cp~0)) .cse17 (let ((.cse22 (let ((.cse23 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~10 (_ bv0 32)))) (.cse24 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~11 (_ bv0 32))))) (or (and .cse3 .cse5 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~12 (_ bv1 32)) .cse6 .cse7 .cse23 .cse8 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse24 .cse19 .cse20 .cse21) (and .cse3 .cse4 .cse5 .cse6 .cse7 .cse23 .cse8 (bvslt ULTIMATE.start_main_~main__c~0 (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~main__tokenlen~0)) .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse24 .cse19 .cse20 .cse21))))) (or (and (bvsle (_ bv0 32) ULTIMATE.start_main_~main__c~0) (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 (_ bv1 32)) .cse22) (and .cse4 .cse22)))) (and .cse3 .cse4 .cse2 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~17 (_ bv1 32)) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (bvsge (bvadd (_ bv4294967292 32) ULTIMATE.start_main_~main__cp~0) (_ bv0 32)) .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21)))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~__VERIFIER_assert__cond~11 (_ bv1 32))) (and .cse1 (or (and .cse2 .cse0) (and .cse3 .cse4 .cse2 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 (bvsle (_ bv0 32) (bvadd ULTIMATE.start_main_~main__cp~0 (_ bv4294967294 32))) .cse19 .cse20 .cse21))))))) [2021-10-16 02:11:02,381 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 243) no Hoare annotation was computed. [2021-10-16 02:11:02,381 INFO L857 garLoopResultBuilder]: For program point L282(lines 282 320) no Hoare annotation was computed. [2021-10-16 02:11:02,381 INFO L860 garLoopResultBuilder]: At program point L431(lines 13 439) the Hoare annotation is: true [2021-10-16 02:11:02,382 INFO L857 garLoopResultBuilder]: For program point L35(lines 35 436) no Hoare annotation was computed. [2021-10-16 02:11:02,388 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:11:02,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:11:02 BoogieIcfgContainer [2021-10-16 02:11:02,492 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:11:02,493 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:11:02,493 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:11:02,494 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:11:02,494 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:05:51" (3/4) ... [2021-10-16 02:11:02,498 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:11:02,525 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-16 02:11:02,526 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:11:02,526 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:11:02,527 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:11:02,657 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:11:02,657 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:11:02,658 INFO L168 Benchmark]: Toolchain (without parser) took 312639.74 ms. Allocated memory was 67.1 MB in the beginning and 4.7 GB in the end (delta: 4.6 GB). Free memory was 44.5 MB in the beginning and 3.4 GB in the end (delta: -3.3 GB). Peak memory consumption was 1.2 GB. Max. memory is 16.1 GB. [2021-10-16 02:11:02,659 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 52.4 MB. Free memory is still 32.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:11:02,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 515.50 ms. Allocated memory is still 67.1 MB. Free memory was 44.4 MB in the beginning and 44.9 MB in the end (delta: -439.7 kB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:11:02,660 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.73 ms. Allocated memory is still 67.1 MB. Free memory was 44.9 MB in the beginning and 42.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:11:02,661 INFO L168 Benchmark]: Boogie Preprocessor took 51.03 ms. Allocated memory is still 67.1 MB. Free memory was 42.8 MB in the beginning and 41.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:11:02,661 INFO L168 Benchmark]: RCFGBuilder took 785.01 ms. Allocated memory is still 67.1 MB. Free memory was 41.2 MB in the beginning and 44.1 MB in the end (delta: -2.9 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:11:02,667 INFO L168 Benchmark]: TraceAbstraction took 311058.30 ms. Allocated memory was 67.1 MB in the beginning and 4.7 GB in the end (delta: 4.6 GB). Free memory was 43.6 MB in the beginning and 3.4 GB in the end (delta: -3.3 GB). Peak memory consumption was 1.6 GB. Max. memory is 16.1 GB. [2021-10-16 02:11:02,667 INFO L168 Benchmark]: Witness Printer took 164.08 ms. Allocated memory is still 4.7 GB. Free memory was 3.4 GB in the beginning and 3.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:11:02,670 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 52.4 MB. Free memory is still 32.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 515.50 ms. Allocated memory is still 67.1 MB. Free memory was 44.4 MB in the beginning and 44.9 MB in the end (delta: -439.7 kB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.73 ms. Allocated memory is still 67.1 MB. Free memory was 44.9 MB in the beginning and 42.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.03 ms. Allocated memory is still 67.1 MB. Free memory was 42.8 MB in the beginning and 41.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 785.01 ms. Allocated memory is still 67.1 MB. Free memory was 41.2 MB in the beginning and 44.1 MB in the end (delta: -2.9 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 311058.30 ms. Allocated memory was 67.1 MB in the beginning and 4.7 GB in the end (delta: 4.6 GB). Free memory was 43.6 MB in the beginning and 3.4 GB in the end (delta: -3.3 GB). Peak memory consumption was 1.6 GB. Max. memory is 16.1 GB. * Witness Printer took 164.08 ms. Allocated memory is still 4.7 GB. Free memory was 3.4 GB in the beginning and 3.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 85]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 97]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 113]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 125]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 145]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 157]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 177]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 189]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 214]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 226]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 243]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 255]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 272]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 284]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 296]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 308]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 374]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 386]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 82 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 310883.5ms, OverallIterations: 35, TraceHistogramMax: 12, EmptinessCheckTime: 53.3ms, AutomataDifference: 137257.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 54441.2ms, InitialAbstractionConstructionTime: 14.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2102 SDtfs, 24146 SDslu, 9847 SDs, 0 SdLazy, 12069 SolverSat, 2345 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 29290.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4910 GetRequests, 3851 SyntacticMatches, 10 SemanticMatches, 1049 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36136 ImplicationChecksByTransitivity, 122708.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=247occurred in iteration=32, InterpolantAutomatonStates: 743, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 658.2ms AutomataMinimizationTime, 35 MinimizatonAttempts, 3200 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 308 NumberOfFragments, 2189 HoareAnnotationTreeSize, 6 FomulaSimplifications, 5286350513707793353 FormulaSimplificationTreeSizeReduction, 18724.9ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 17145463197981341 FormulaSimplificationTreeSizeReductionInter, 35701.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 599.2ms SsaConstructionTime, 3044.4ms SatisfiabilityAnalysisTime, 54505.4ms InterpolantComputationTime, 2188 NumberOfCodeBlocks, 2188 NumberOfCodeBlocksAsserted, 63 NumberOfCheckSat, 4256 ConstructedInterpolants, 0 QuantifiedInterpolants, 22595 SizeOfPredicates, 344 NumberOfNonLiveVariables, 5464 ConjunctsInSsa, 651 ConjunctsInUnsatCore, 120 InterpolantComputations, 52 PerfectInterpolantSequences, 901/2946 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 230]: Loop Invariant Derived loop invariant: ((((((__VERIFIER_assert__cond == 1bv32 && ~bvsle32(0bv32, ~bvadd64(4294967293bv32, main__cp))) && ~bvsge32(main__scheme, 0bv32)) && (((~bvsle32(0bv32, main__c) && __VERIFIER_assert__cond == 1bv32) && ((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && __VERIFIER_assert__cond == 1bv32) && ~bvslt32(main__cp, main__urilen)) && __VERIFIER_assert__cond == 1bv32) && (((((~bvsle32(0bv32, ~bvadd64(main__scheme, 1bv32)) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32) || ((((__VERIFIER_assert__cond == 1bv32 && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32))) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) || ((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && main__c == 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(main__c, ~bvadd64(4294967295bv32, main__tokenlen))) && __VERIFIER_assert__cond == 1bv32) && ~bvslt32(main__cp, main__urilen)) && __VERIFIER_assert__cond == 1bv32) && (((((~bvsle32(0bv32, ~bvadd64(main__scheme, 1bv32)) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32) || ((((__VERIFIER_assert__cond == 1bv32 && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32))) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)))) || (main__c == 0bv32 && ((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && __VERIFIER_assert__cond == 1bv32) && ~bvslt32(main__cp, main__urilen)) && __VERIFIER_assert__cond == 1bv32) && (((((~bvsle32(0bv32, ~bvadd64(main__scheme, 1bv32)) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32) || ((((__VERIFIER_assert__cond == 1bv32 && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32))) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) || ((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && main__c == 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(main__c, ~bvadd64(4294967295bv32, main__tokenlen))) && __VERIFIER_assert__cond == 1bv32) && ~bvslt32(main__cp, main__urilen)) && __VERIFIER_assert__cond == 1bv32) && (((((~bvsle32(0bv32, ~bvadd64(main__scheme, 1bv32)) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32) || ((((__VERIFIER_assert__cond == 1bv32 && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32))) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)))))) || (((((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && main__c == 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvslt32(main__cp, main__urilen)) && __VERIFIER_assert__cond == 1bv32) && (((((~bvsle32(0bv32, ~bvadd64(main__scheme, 1bv32)) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32) || ((((__VERIFIER_assert__cond == 1bv32 && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32))) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967292bv32, main__cp), 0bv32)) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && !(main__urilen == ~bvadd64(main__cp, 1bv32))) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32))) && ~bvsle32(main__urilen, 1000000bv32)) && __VERIFIER_assert__cond == 1bv32) || (~bvsle32(main__urilen, 1000000bv32) && ((__VERIFIER_assert__cond == 1bv32 && ((((__VERIFIER_assert__cond == 1bv32 && ~bvsle32(0bv32, ~bvadd64(4294967293bv32, main__cp))) && ~bvsge32(main__scheme, 0bv32)) && (((~bvsle32(0bv32, main__c) && __VERIFIER_assert__cond == 1bv32) && ((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && __VERIFIER_assert__cond == 1bv32) && ~bvslt32(main__cp, main__urilen)) && __VERIFIER_assert__cond == 1bv32) && (((((~bvsle32(0bv32, ~bvadd64(main__scheme, 1bv32)) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32) || ((((__VERIFIER_assert__cond == 1bv32 && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32))) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) || ((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && main__c == 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(main__c, ~bvadd64(4294967295bv32, main__tokenlen))) && __VERIFIER_assert__cond == 1bv32) && ~bvslt32(main__cp, main__urilen)) && __VERIFIER_assert__cond == 1bv32) && (((((~bvsle32(0bv32, ~bvadd64(main__scheme, 1bv32)) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32) || ((((__VERIFIER_assert__cond == 1bv32 && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32))) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)))) || (main__c == 0bv32 && ((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && __VERIFIER_assert__cond == 1bv32) && ~bvslt32(main__cp, main__urilen)) && __VERIFIER_assert__cond == 1bv32) && (((((~bvsle32(0bv32, ~bvadd64(main__scheme, 1bv32)) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32) || ((((__VERIFIER_assert__cond == 1bv32 && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32))) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) || ((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && main__c == 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(main__c, ~bvadd64(4294967295bv32, main__tokenlen))) && __VERIFIER_assert__cond == 1bv32) && ~bvslt32(main__cp, main__urilen)) && __VERIFIER_assert__cond == 1bv32) && (((((~bvsle32(0bv32, ~bvadd64(main__scheme, 1bv32)) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32) || ((((__VERIFIER_assert__cond == 1bv32 && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32))) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)))))) || (((((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && main__c == 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvslt32(main__cp, main__urilen)) && __VERIFIER_assert__cond == 1bv32) && (((((~bvsle32(0bv32, ~bvadd64(main__scheme, 1bv32)) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32) || ((((__VERIFIER_assert__cond == 1bv32 && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32))) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967292bv32, main__cp), 0bv32)) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && !(main__urilen == ~bvadd64(main__cp, 1bv32))) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)))) || ((((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && main__c == 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvslt32(main__cp, main__urilen)) && __VERIFIER_assert__cond == 1bv32) && (((((~bvsle32(0bv32, ~bvadd64(main__scheme, 1bv32)) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32) || ((((__VERIFIER_assert__cond == 1bv32 && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && (~bvslt32(~bvadd64(4294967295bv32, main__scheme), main__urilen) || ~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme))) && __VERIFIER_assert__cond == 1bv32))) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && !(main__urilen == ~bvadd64(main__cp, 1bv32))) && ~bvsle32(0bv32, ~bvadd64(main__cp, 4294967294bv32))) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)))) - InvariantResult [Line: 262]: Loop Invariant Derived loop invariant: ((((((__VERIFIER_assert__cond == 1bv32 && __VERIFIER_assert__cond == 1bv32) && (((__VERIFIER_assert__cond == 1bv32 && main__c == 1bv32) && ((((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && main__c == 0bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(~bvadd64(main__cp, 1bv32), main__urilen)) && ~bvslt32(main__c, ~bvadd64(4294967295bv32, main__tokenlen))) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32) || ((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(~bvadd64(main__cp, 1bv32), main__urilen)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32))) || (main__c == 0bv32 && ((((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && main__c == 0bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(~bvadd64(main__cp, 1bv32), main__urilen)) && ~bvslt32(main__c, ~bvadd64(4294967295bv32, main__tokenlen))) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32) || ((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(~bvadd64(main__cp, 1bv32), main__urilen)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32))))) && __VERIFIER_assert__cond == 1bv32) && ~bvsle32(0bv32, ~bvadd64(main__cp, 4294967294bv32))) && ~bvsle32(main__urilen, 1000000bv32)) && __VERIFIER_assert__cond == 1bv32) || ((((__VERIFIER_assert__cond == 1bv32 && ((main__c == 0bv32 && ((((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && main__c == 0bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(~bvadd64(main__cp, 1bv32), main__urilen)) && ~bvslt32(main__c, ~bvadd64(4294967295bv32, main__tokenlen))) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32) || ((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(~bvadd64(main__cp, 1bv32), main__urilen)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32))) || ((~bvsle32(0bv32, main__c) && __VERIFIER_assert__cond == 1bv32) && ((((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && main__c == 0bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(~bvadd64(main__cp, 1bv32), main__urilen)) && ~bvslt32(main__c, ~bvadd64(4294967295bv32, main__tokenlen))) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32) || ((((((((((((((((((~bvsgt32(main__tokenlen, 0bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && !(__VERIFIER_assert__cond == 0bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(~bvadd64(main__cp, 1bv32), main__urilen)) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvsge32(~bvadd64(4294967295bv32, main__cp), 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && ~bvsle32(~bvadd64(4294967295bv32, main__cp), 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && !(__VERIFIER_assert__cond == 0bv32)) && __VERIFIER_assert__cond == 1bv32))))) && ~bvsle32(0bv32, ~bvadd64(4294967293bv32, main__cp))) && ~bvsle32(main__urilen, 1000000bv32)) && __VERIFIER_assert__cond == 1bv32) - InvariantResult [Line: 104]: Loop Invariant Derived loop invariant: ((__VERIFIER_assert__cond == 1bv32 && ~bvsle32(main__urilen, 1000000bv32)) && ~bvsgt32(main__urilen, 0bv32)) || ((__VERIFIER_assert__cond == 1bv32 && ((~bvslt32(~bvadd64(4294967295bv32, main__urilen), main__scheme) || !~bvsge32(main__scheme, 0bv32)) || main__scheme == 0bv32)) && ~bvsle32(main__urilen, 1000000bv32)) - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: (((((((((((~bvsgt32(main__tokenlen, 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(main__cp, main__urilen)) && __VERIFIER_assert__cond == 1bv32) && !(main__scheme == 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && ~bvsle32(0bv32, ~bvadd64(4294967295bv32, main__cp))) && ~bvsle32(main__urilen, 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && ~bvslt32(~bvadd64(4294967295bv32, main__cp), main__urilen)) && __VERIFIER_assert__cond == 1bv32 - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: (((((((((((((~bvsgt32(main__tokenlen, 0bv32) && __VERIFIER_assert__cond == 1bv32) && __VERIFIER_assert__cond == 1bv32) && ~bvsle32(main__scheme, 1000000bv32)) && ~bvslt32(~bvadd64(main__cp, 1bv32), main__urilen)) && __VERIFIER_assert__cond == 1bv32) && !(main__scheme == 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && ~bvsle32(0bv32, ~bvadd64(4294967295bv32, main__cp))) && ~bvsle32(main__urilen, 1000000bv32)) && ~bvsle32(main__tokenlen, 1000000bv32)) && ~bvsgt32(main__urilen, 0bv32)) && ~bvslt32(~bvadd64(4294967295bv32, main__cp), main__urilen)) && __VERIFIER_assert__cond == 1bv32) || (((((((((__VERIFIER_assert__cond == 1bv32 && __VERIFIER_assert__cond == 1bv32) && main__urilen == ~bvadd64(main__cp, 1bv32)) && ~bvsle32(main__scheme, 1000000bv32)) && __VERIFIER_assert__cond == 1bv32) && !(main__scheme == 0bv32)) && ~bvsge32(main__scheme, 0bv32)) && ~bvsle32(main__urilen, 1000000bv32)) && ~bvsgt32(main__urilen, 0bv32)) && __VERIFIER_assert__cond == 1bv32) RESULT: Ultimate proved your program to be correct! [2021-10-16 02:11:02,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22c2c67c-da21-47fb-bd2f-7050ecfe585e/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...