./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:36:40,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:36:40,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:36:40,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:36:40,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:36:40,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:36:40,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:36:40,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:36:40,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:36:40,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:36:40,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:36:40,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:36:40,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:36:40,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:36:40,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:36:40,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:36:40,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:36:40,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:36:40,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:36:40,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:36:40,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:36:40,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:36:40,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:36:40,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:36:40,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:36:40,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:36:40,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:36:40,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:36:40,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:36:40,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:36:40,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:36:40,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:36:40,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:36:40,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:36:40,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:36:40,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:36:40,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:36:40,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:36:40,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:36:40,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:36:40,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:36:40,095 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-11-23 13:36:40,120 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:36:40,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:36:40,121 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:36:40,121 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:36:40,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:36:40,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:36:40,123 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:36:40,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:36:40,123 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 13:36:40,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:36:40,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:36:40,124 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 13:36:40,125 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 13:36:40,125 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 13:36:40,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:36:40,125 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 13:36:40,126 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:36:40,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:36:40,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:36:40,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:36:40,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:36:40,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:36:40,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:36:40,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:36:40,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:36:40,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:36:40,129 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2021-11-23 13:36:40,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:36:40,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:36:40,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:36:40,424 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:36:40,424 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:36:40,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-11-23 13:36:40,498 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/data/fa025eacf/2c0310b7f0864f7ea6934cfc28954dfa/FLAG538347268 [2021-11-23 13:36:41,116 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:36:41,117 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-11-23 13:36:41,166 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/data/fa025eacf/2c0310b7f0864f7ea6934cfc28954dfa/FLAG538347268 [2021-11-23 13:36:41,318 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/data/fa025eacf/2c0310b7f0864f7ea6934cfc28954dfa [2021-11-23 13:36:41,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:36:41,322 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:36:41,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:36:41,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:36:41,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:36:41,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:36:41" (1/1) ... [2021-11-23 13:36:41,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79bcf29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:41, skipping insertion in model container [2021-11-23 13:36:41,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:36:41" (1/1) ... [2021-11-23 13:36:41,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:36:41,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:36:42,011 WARN L230 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_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-11-23 13:36:42,072 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:36:42,098 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-23 13:36:42,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@62efadb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:42, skipping insertion in model container [2021-11-23 13:36:42,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:36:42,100 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 13:36:42,102 INFO L158 Benchmark]: Toolchain (without parser) took 779.13ms. Allocated memory is still 94.4MB. Free memory was 70.8MB in the beginning and 51.3MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-23 13:36:42,104 INFO L158 Benchmark]: CDTParser took 0.60ms. Allocated memory is still 94.4MB. Free memory is still 69.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:36:42,104 INFO L158 Benchmark]: CACSL2BoogieTranslator took 776.71ms. Allocated memory is still 94.4MB. Free memory was 70.5MB in the beginning and 51.3MB in the end (delta: 19.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-23 13:36:42,105 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60ms. Allocated memory is still 94.4MB. Free memory is still 69.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 776.71ms. Allocated memory is still 94.4MB. Free memory was 70.5MB in the beginning and 51.3MB in the end (delta: 19.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1515]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:36:44,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:36:44,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:36:44,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:36:44,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:36:44,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:36:44,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:36:44,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:36:44,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:36:44,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:36:44,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:36:44,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:36:44,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:36:44,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:36:44,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:36:44,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:36:44,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:36:44,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:36:44,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:36:44,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:36:44,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:36:44,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:36:44,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:36:44,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:36:44,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:36:44,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:36:44,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:36:44,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:36:44,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:36:44,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:36:44,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:36:44,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:36:44,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:36:44,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:36:44,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:36:44,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:36:44,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:36:44,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:36:44,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:36:44,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:36:44,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:36:44,390 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2021-11-23 13:36:44,414 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:36:44,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:36:44,415 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:36:44,415 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:36:44,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:36:44,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:36:44,417 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:36:44,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:36:44,417 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 13:36:44,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:36:44,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:36:44,418 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 13:36:44,418 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 13:36:44,418 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 13:36:44,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:36:44,419 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 13:36:44,419 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 13:36:44,419 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 13:36:44,420 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:36:44,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:36:44,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:36:44,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:36:44,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:36:44,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:36:44,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:36:44,421 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-23 13:36:44,422 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 13:36:44,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:36:44,422 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 13:36:44,422 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_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2021-11-23 13:36:44,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:36:44,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:36:44,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:36:44,840 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:36:44,841 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:36:44,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-11-23 13:36:44,923 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/data/93d26072d/7f49982388fa4539b28cbd86804274fa/FLAGddd649436 [2021-11-23 13:36:45,557 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:36:45,558 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-11-23 13:36:45,577 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/data/93d26072d/7f49982388fa4539b28cbd86804274fa/FLAGddd649436 [2021-11-23 13:36:45,799 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/data/93d26072d/7f49982388fa4539b28cbd86804274fa [2021-11-23 13:36:45,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:36:45,803 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:36:45,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:36:45,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:36:45,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:36:45,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:36:45" (1/1) ... [2021-11-23 13:36:45,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27264e7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:45, skipping insertion in model container [2021-11-23 13:36:45,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:36:45" (1/1) ... [2021-11-23 13:36:45,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:36:45,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:36:46,549 WARN L230 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_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-11-23 13:36:46,598 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:36:46,613 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 13:36:46,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:36:46,674 WARN L230 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_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-11-23 13:36:46,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:36:46,712 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:36:46,755 WARN L230 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_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-11-23 13:36:46,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:36:46,942 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:36:46,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:46 WrapperNode [2021-11-23 13:36:46,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:36:46,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:36:46,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:36:46,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:36:46,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:46" (1/1) ... [2021-11-23 13:36:47,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:46" (1/1) ... [2021-11-23 13:36:47,075 INFO L137 Inliner]: procedures = 353, calls = 114, calls flagged for inlining = 16, calls inlined = 11, statements flattened = 392 [2021-11-23 13:36:47,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:36:47,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:36:47,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:36:47,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:36:47,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:46" (1/1) ... [2021-11-23 13:36:47,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:46" (1/1) ... [2021-11-23 13:36:47,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:46" (1/1) ... [2021-11-23 13:36:47,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:46" (1/1) ... [2021-11-23 13:36:47,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:46" (1/1) ... [2021-11-23 13:36:47,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:46" (1/1) ... [2021-11-23 13:36:47,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:46" (1/1) ... [2021-11-23 13:36:47,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:36:47,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:36:47,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:36:47,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:36:47,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:46" (1/1) ... [2021-11-23 13:36:47,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:36:47,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:47,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:47,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:36:47,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 13:36:47,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 13:36:47,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 13:36:47,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-23 13:36:47,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:36:47,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 13:36:47,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 13:36:47,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-23 13:36:47,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 13:36:47,303 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-23 13:36:47,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:36:47,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 13:36:47,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:36:47,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:36:47,690 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:36:47,692 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:36:49,059 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:36:49,072 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:36:49,073 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-23 13:36:49,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:36:49 BoogieIcfgContainer [2021-11-23 13:36:49,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:36:49,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:36:49,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:36:49,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:36:49,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:36:45" (1/3) ... [2021-11-23 13:36:49,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314355b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:36:49, skipping insertion in model container [2021-11-23 13:36:49,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:36:46" (2/3) ... [2021-11-23 13:36:49,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314355b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:36:49, skipping insertion in model container [2021-11-23 13:36:49,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:36:49" (3/3) ... [2021-11-23 13:36:49,087 INFO L111 eAbstractionObserver]: Analyzing ICFG basename-2.i [2021-11-23 13:36:49,093 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:36:49,093 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 94 error locations. [2021-11-23 13:36:49,160 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:36:49,169 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 13:36:49,169 INFO L340 AbstractCegarLoop]: Starting to check reachability of 94 error locations. [2021-11-23 13:36:49,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 241 states, 146 states have (on average 1.9589041095890412) internal successors, (286), 240 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:49,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 13:36:49,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:49,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 13:36:49,201 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-23 13:36:49,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:49,207 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-23 13:36:49,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:36:49,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799955400] [2021-11-23 13:36:49,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:49,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:36:49,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:36:49,229 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:36:49,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 13:36:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:49,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:36:49,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:49,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 13:36:49,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:49,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:36:49,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:49,524 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:36:49,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799955400] [2021-11-23 13:36:49,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799955400] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:49,525 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:49,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 13:36:49,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921534824] [2021-11-23 13:36:49,528 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:49,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:36:49,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:36:49,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:36:49,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:36:49,595 INFO L87 Difference]: Start difference. First operand has 241 states, 146 states have (on average 1.9589041095890412) internal successors, (286), 240 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:50,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:50,240 INFO L93 Difference]: Finished difference Result 249 states and 282 transitions. [2021-11-23 13:36:50,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:36:50,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-11-23 13:36:50,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:50,256 INFO L225 Difference]: With dead ends: 249 [2021-11-23 13:36:50,256 INFO L226 Difference]: Without dead ends: 247 [2021-11-23 13:36:50,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:36:50,261 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 243 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:50,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 199 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 13:36:50,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-23 13:36:50,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 231. [2021-11-23 13:36:50,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 141 states have (on average 1.8652482269503545) internal successors, (263), 230 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:50,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 263 transitions. [2021-11-23 13:36:50,312 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 263 transitions. Word has length 3 [2021-11-23 13:36:50,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:50,312 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 263 transitions. [2021-11-23 13:36:50,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:50,313 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 263 transitions. [2021-11-23 13:36:50,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 13:36:50,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:50,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 13:36:50,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:50,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:36:50,527 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-23 13:36:50,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:50,528 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-23 13:36:50,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:36:50,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35164653] [2021-11-23 13:36:50,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:50,530 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:36:50,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:36:50,531 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:36:50,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 13:36:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:50,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:36:50,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:50,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 13:36:50,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:50,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:36:50,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:50,907 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:36:50,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35164653] [2021-11-23 13:36:50,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35164653] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:50,908 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:50,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-23 13:36:50,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89575069] [2021-11-23 13:36:50,908 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:50,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:36:50,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:36:50,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:36:50,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:36:50,911 INFO L87 Difference]: Start difference. First operand 231 states and 263 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:52,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:52,210 INFO L93 Difference]: Finished difference Result 230 states and 262 transitions. [2021-11-23 13:36:52,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:36:52,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 3 [2021-11-23 13:36:52,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:52,215 INFO L225 Difference]: With dead ends: 230 [2021-11-23 13:36:52,215 INFO L226 Difference]: Without dead ends: 230 [2021-11-23 13:36:52,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:36:52,217 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 28 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:52,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 421 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 13:36:52,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-11-23 13:36:52,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2021-11-23 13:36:52,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 141 states have (on average 1.8581560283687943) internal successors, (262), 229 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:52,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 262 transitions. [2021-11-23 13:36:52,252 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 262 transitions. Word has length 3 [2021-11-23 13:36:52,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:52,253 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 262 transitions. [2021-11-23 13:36:52,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:52,254 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 262 transitions. [2021-11-23 13:36:52,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 13:36:52,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:52,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 13:36:52,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:52,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:36:52,468 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-23 13:36:52,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:52,468 INFO L85 PathProgramCache]: Analyzing trace with hash 889446313, now seen corresponding path program 1 times [2021-11-23 13:36:52,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:36:52,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552304670] [2021-11-23 13:36:52,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:52,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:36:52,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:36:52,471 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:36:52,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 13:36:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:52,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:36:52,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:52,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 13:36:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:52,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:36:53,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:53,205 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:36:53,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552304670] [2021-11-23 13:36:53,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552304670] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:53,206 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:53,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 13:36:53,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711693348] [2021-11-23 13:36:53,206 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:53,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:36:53,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:36:53,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:36:53,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:36:53,208 INFO L87 Difference]: Start difference. First operand 230 states and 262 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:56,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:56,210 INFO L93 Difference]: Finished difference Result 243 states and 276 transitions. [2021-11-23 13:36:56,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:36:56,213 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-23 13:36:56,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:56,215 INFO L225 Difference]: With dead ends: 243 [2021-11-23 13:36:56,215 INFO L226 Difference]: Without dead ends: 243 [2021-11-23 13:36:56,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:36:56,217 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 33 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:56,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 923 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-23 13:36:56,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-23 13:36:56,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 236. [2021-11-23 13:36:56,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 147 states have (on average 1.8299319727891157) internal successors, (269), 235 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:56,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 269 transitions. [2021-11-23 13:36:56,238 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 269 transitions. Word has length 6 [2021-11-23 13:36:56,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:56,247 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 269 transitions. [2021-11-23 13:36:56,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:56,248 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 269 transitions. [2021-11-23 13:36:56,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 13:36:56,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:56,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:56,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-23 13:36:56,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:36:56,458 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-23 13:36:56,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:56,459 INFO L85 PathProgramCache]: Analyzing trace with hash 462405445, now seen corresponding path program 1 times [2021-11-23 13:36:56,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:36:56,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542137086] [2021-11-23 13:36:56,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:56,460 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:36:56,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:36:56,461 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:36:56,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 13:36:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:56,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:36:56,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:56,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:56,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:36:56,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:56,688 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:36:56,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542137086] [2021-11-23 13:36:56,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542137086] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:36:56,688 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:36:56,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-23 13:36:56,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584663393] [2021-11-23 13:36:56,689 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:36:56,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:36:56,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:36:56,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:36:56,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:36:56,690 INFO L87 Difference]: Start difference. First operand 236 states and 269 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) [2021-11-23 13:36:56,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:56,795 INFO L93 Difference]: Finished difference Result 244 states and 276 transitions. [2021-11-23 13:36:56,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:36:56,796 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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 11 [2021-11-23 13:36:56,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:56,798 INFO L225 Difference]: With dead ends: 244 [2021-11-23 13:36:56,798 INFO L226 Difference]: Without dead ends: 244 [2021-11-23 13:36:56,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:36:56,800 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 15 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:56,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1024 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:36:56,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-23 13:36:56,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 243. [2021-11-23 13:36:56,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 154 states have (on average 1.7922077922077921) internal successors, (276), 242 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:56,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 276 transitions. [2021-11-23 13:36:56,812 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 276 transitions. Word has length 11 [2021-11-23 13:36:56,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:56,812 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 276 transitions. [2021-11-23 13:36:56,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) [2021-11-23 13:36:56,812 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 276 transitions. [2021-11-23 13:36:56,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 13:36:56,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:56,813 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-23 13:36:56,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:57,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:36:57,027 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-23 13:36:57,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:57,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1609221679, now seen corresponding path program 1 times [2021-11-23 13:36:57,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:36:57,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [939005417] [2021-11-23 13:36:57,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:57,029 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:36:57,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:36:57,030 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:36:57,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 13:36:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:57,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:36:57,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:57,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 13:36:57,431 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:57,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:36:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:59,378 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:36:59,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [939005417] [2021-11-23 13:36:59,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [939005417] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:36:59,378 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:36:59,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-11-23 13:36:59,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266620235] [2021-11-23 13:36:59,379 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:36:59,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:36:59,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:36:59,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:36:59,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:36:59,380 INFO L87 Difference]: Start difference. First operand 243 states and 276 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:05,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:37:05,632 INFO L93 Difference]: Finished difference Result 246 states and 278 transitions. [2021-11-23 13:37:05,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:37:05,634 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 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 14 [2021-11-23 13:37:05,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:37:05,635 INFO L225 Difference]: With dead ends: 246 [2021-11-23 13:37:05,636 INFO L226 Difference]: Without dead ends: 246 [2021-11-23 13:37:05,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-11-23 13:37:05,637 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 39 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:37:05,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 1097 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-11-23 13:37:05,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-11-23 13:37:05,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2021-11-23 13:37:05,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 158 states have (on average 1.759493670886076) internal successors, (278), 245 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) [2021-11-23 13:37:05,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 278 transitions. [2021-11-23 13:37:05,648 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 278 transitions. Word has length 14 [2021-11-23 13:37:05,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:37:05,648 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 278 transitions. [2021-11-23 13:37:05,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:05,649 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 278 transitions. [2021-11-23 13:37:05,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 13:37:05,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:37:05,650 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:37:05,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 13:37:05,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:37:05,864 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-23 13:37:05,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:37:05,864 INFO L85 PathProgramCache]: Analyzing trace with hash -406298695, now seen corresponding path program 2 times [2021-11-23 13:37:05,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:37:05,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29033369] [2021-11-23 13:37:05,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 13:37:05,866 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:37:05,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:37:05,867 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:37:05,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 13:37:06,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-23 13:37:06,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:37:06,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:37:06,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:37:06,098 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 13:37:06,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 19 [2021-11-23 13:37:06,318 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-23 13:37:06,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:37:06,450 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-23 13:37:06,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:37:06,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29033369] [2021-11-23 13:37:06,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29033369] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:37:06,451 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:37:06,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-23 13:37:06,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834457222] [2021-11-23 13:37:06,451 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:37:06,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:37:06,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:37:06,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:37:06,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:37:06,452 INFO L87 Difference]: Start difference. First operand 246 states and 278 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:06,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:37:06,823 INFO L93 Difference]: Finished difference Result 261 states and 294 transitions. [2021-11-23 13:37:06,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:37:06,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-23 13:37:06,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:37:06,826 INFO L225 Difference]: With dead ends: 261 [2021-11-23 13:37:06,826 INFO L226 Difference]: Without dead ends: 261 [2021-11-23 13:37:06,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:37:06,827 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 464 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:37:06,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 197 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 13:37:06,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-11-23 13:37:06,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 245. [2021-11-23 13:37:06,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 158 states have (on average 1.7531645569620253) internal successors, (277), 244 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:06,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 277 transitions. [2021-11-23 13:37:06,835 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 277 transitions. Word has length 27 [2021-11-23 13:37:06,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:37:06,836 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 277 transitions. [2021-11-23 13:37:06,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:06,836 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 277 transitions. [2021-11-23 13:37:06,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 13:37:06,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:37:06,837 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:37:06,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 13:37:07,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:37:07,042 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-23 13:37:07,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:37:07,043 INFO L85 PathProgramCache]: Analyzing trace with hash -406298694, now seen corresponding path program 1 times [2021-11-23 13:37:07,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:37:07,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418378954] [2021-11-23 13:37:07,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:37:07,043 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:37:07,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:37:07,044 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:37:07,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 13:37:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:37:07,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 13:37:07,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:37:07,350 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:37:07,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:37:07,563 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:37:07,563 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:37:07,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418378954] [2021-11-23 13:37:07,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418378954] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:37:07,563 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:37:07,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-11-23 13:37:07,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259070473] [2021-11-23 13:37:07,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:37:07,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 13:37:07,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:37:07,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 13:37:07,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-23 13:37:07,566 INFO L87 Difference]: Start difference. First operand 245 states and 277 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 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) [2021-11-23 13:37:08,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:37:08,001 INFO L93 Difference]: Finished difference Result 265 states and 297 transitions. [2021-11-23 13:37:08,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:37:08,002 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 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 27 [2021-11-23 13:37:08,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:37:08,004 INFO L225 Difference]: With dead ends: 265 [2021-11-23 13:37:08,004 INFO L226 Difference]: Without dead ends: 265 [2021-11-23 13:37:08,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2021-11-23 13:37:08,005 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 30 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:37:08,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 1814 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:37:08,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-23 13:37:08,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2021-11-23 13:37:08,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 178 states have (on average 1.6685393258426966) internal successors, (297), 264 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:08,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 297 transitions. [2021-11-23 13:37:08,014 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 297 transitions. Word has length 27 [2021-11-23 13:37:08,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:37:08,014 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 297 transitions. [2021-11-23 13:37:08,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 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) [2021-11-23 13:37:08,014 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 297 transitions. [2021-11-23 13:37:08,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-23 13:37:08,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:37:08,016 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:37:08,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 13:37:08,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:37:08,231 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-23 13:37:08,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:37:08,231 INFO L85 PathProgramCache]: Analyzing trace with hash 833691147, now seen corresponding path program 2 times [2021-11-23 13:37:08,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:37:08,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802951947] [2021-11-23 13:37:08,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 13:37:08,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:37:08,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:37:08,234 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:37:08,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 13:37:08,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-23 13:37:08,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:37:08,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 13:37:08,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:37:08,496 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 13:37:08,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-23 13:37:08,507 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 13:37:08,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-23 13:37:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:37:09,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:37:12,755 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:37:12,755 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:37:12,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802951947] [2021-11-23 13:37:12,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1802951947] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:37:12,756 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:37:12,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-11-23 13:37:12,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192618163] [2021-11-23 13:37:12,756 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:37:12,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:37:12,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:37:12,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:37:12,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-23 13:37:12,757 INFO L87 Difference]: Start difference. First operand 265 states and 297 transitions. Second operand has 6 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) [2021-11-23 13:37:14,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:37:14,487 INFO L93 Difference]: Finished difference Result 264 states and 296 transitions. [2021-11-23 13:37:14,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:37:14,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 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 47 [2021-11-23 13:37:14,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:37:14,490 INFO L225 Difference]: With dead ends: 264 [2021-11-23 13:37:14,491 INFO L226 Difference]: Without dead ends: 264 [2021-11-23 13:37:14,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-23 13:37:14,492 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 6 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:37:14,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 679 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 201 Invalid, 0 Unknown, 130 Unchecked, 1.7s Time] [2021-11-23 13:37:14,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-11-23 13:37:14,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2021-11-23 13:37:14,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 178 states have (on average 1.6629213483146068) internal successors, (296), 263 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:14,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 296 transitions. [2021-11-23 13:37:14,500 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 296 transitions. Word has length 47 [2021-11-23 13:37:14,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:37:14,501 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 296 transitions. [2021-11-23 13:37:14,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 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) [2021-11-23 13:37:14,501 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 296 transitions. [2021-11-23 13:37:14,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 13:37:14,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:37:14,502 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:37:14,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 13:37:14,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:37:14,711 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-23 13:37:14,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:37:14,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1736561616, now seen corresponding path program 1 times [2021-11-23 13:37:14,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:37:14,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618194286] [2021-11-23 13:37:14,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:37:14,712 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:37:14,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:37:14,713 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:37:14,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 13:37:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:37:15,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:37:15,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:37:15,204 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 13:37:15,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-23 13:37:15,250 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:37:15,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:37:15,316 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:37:15,316 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:37:15,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618194286] [2021-11-23 13:37:15,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618194286] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:37:15,317 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:37:15,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 13:37:15,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252309647] [2021-11-23 13:37:15,317 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:37:15,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:37:15,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:37:15,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:37:15,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:37:15,319 INFO L87 Difference]: Start difference. First operand 264 states and 296 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 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) [2021-11-23 13:37:15,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:37:15,908 INFO L93 Difference]: Finished difference Result 275 states and 308 transitions. [2021-11-23 13:37:15,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:37:15,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 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 51 [2021-11-23 13:37:15,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:37:15,911 INFO L225 Difference]: With dead ends: 275 [2021-11-23 13:37:15,911 INFO L226 Difference]: Without dead ends: 275 [2021-11-23 13:37:15,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:37:15,913 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 223 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:37:15,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 202 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 13:37:15,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-23 13:37:15,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 259. [2021-11-23 13:37:15,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 178 states have (on average 1.6348314606741574) internal successors, (291), 258 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:15,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 291 transitions. [2021-11-23 13:37:15,921 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 291 transitions. Word has length 51 [2021-11-23 13:37:15,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:37:15,922 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 291 transitions. [2021-11-23 13:37:15,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 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) [2021-11-23 13:37:15,922 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 291 transitions. [2021-11-23 13:37:15,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 13:37:15,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:37:15,923 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:37:15,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 13:37:16,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:37:16,142 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-23 13:37:16,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:37:16,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1736561615, now seen corresponding path program 1 times [2021-11-23 13:37:16,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:37:16,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679271508] [2021-11-23 13:37:16,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:37:16,144 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:37:16,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:37:16,145 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:37:16,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 13:37:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:37:16,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:37:16,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:37:16,697 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-11-23 13:37:16,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 21 [2021-11-23 13:37:16,849 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:37:16,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:37:17,533 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:37:17,533 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:37:17,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679271508] [2021-11-23 13:37:17,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [679271508] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:37:17,533 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:37:17,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-23 13:37:17,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151950058] [2021-11-23 13:37:17,534 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:37:17,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:37:17,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:37:17,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:37:17,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:37:17,536 INFO L87 Difference]: Start difference. First operand 259 states and 291 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:20,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:37:20,915 INFO L93 Difference]: Finished difference Result 510 states and 574 transitions. [2021-11-23 13:37:20,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:37:20,916 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 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 51 [2021-11-23 13:37:20,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:37:20,919 INFO L225 Difference]: With dead ends: 510 [2021-11-23 13:37:20,920 INFO L226 Difference]: Without dead ends: 510 [2021-11-23 13:37:20,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:37:20,921 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 1482 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:37:20,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1482 Valid, 562 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-23 13:37:20,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-11-23 13:37:20,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 363. [2021-11-23 13:37:20,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 283 states have (on average 1.7279151943462898) internal successors, (489), 362 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:20,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 489 transitions. [2021-11-23 13:37:20,933 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 489 transitions. Word has length 51 [2021-11-23 13:37:20,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:37:20,934 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 489 transitions. [2021-11-23 13:37:20,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:20,934 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 489 transitions. [2021-11-23 13:37:20,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-23 13:37:20,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:37:20,936 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:37:20,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 13:37:21,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:37:21,152 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-23 13:37:21,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:37:21,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1026012741, now seen corresponding path program 1 times [2021-11-23 13:37:21,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:37:21,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524283641] [2021-11-23 13:37:21,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:37:21,154 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:37:21,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:37:21,154 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:37:21,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 13:37:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:37:21,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:37:21,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:37:21,675 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-11-23 13:37:21,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 39 [2021-11-23 13:37:21,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2021-11-23 13:37:22,377 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-11-23 13:37:22,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 62 [2021-11-23 13:37:22,391 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 13:37:22,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 52 [2021-11-23 13:37:22,661 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:37:22,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:37:26,435 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 13:37:26,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2021-11-23 13:37:30,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 55 [2021-11-23 13:37:31,159 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:37:31,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:37:31,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524283641] [2021-11-23 13:37:31,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524283641] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:37:31,160 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:37:31,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-23 13:37:31,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214865808] [2021-11-23 13:37:31,160 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:37:31,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 13:37:31,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:37:31,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 13:37:31,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=135, Unknown=3, NotChecked=0, Total=182 [2021-11-23 13:37:31,162 INFO L87 Difference]: Start difference. First operand 363 states and 489 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 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) [2021-11-23 13:37:33,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:37:33,939 INFO L93 Difference]: Finished difference Result 362 states and 488 transitions. [2021-11-23 13:37:33,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:37:33,941 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 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 54 [2021-11-23 13:37:33,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:37:33,944 INFO L225 Difference]: With dead ends: 362 [2021-11-23 13:37:33,944 INFO L226 Difference]: Without dead ends: 362 [2021-11-23 13:37:33,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=60, Invalid=177, Unknown=3, NotChecked=0, Total=240 [2021-11-23 13:37:33,945 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 25 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 349 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:37:33,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 1253 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 349 Unchecked, 2.5s Time] [2021-11-23 13:37:33,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-11-23 13:37:33,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2021-11-23 13:37:33,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 284 states have (on average 1.7183098591549295) internal successors, (488), 361 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:33,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 488 transitions. [2021-11-23 13:37:33,963 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 488 transitions. Word has length 54 [2021-11-23 13:37:33,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:37:33,965 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 488 transitions. [2021-11-23 13:37:33,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 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) [2021-11-23 13:37:33,965 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 488 transitions. [2021-11-23 13:37:33,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-23 13:37:33,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:37:33,976 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:37:33,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 13:37:34,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:37:34,183 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-23 13:37:34,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:37:34,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1741624489, now seen corresponding path program 1 times [2021-11-23 13:37:34,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:37:34,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686788235] [2021-11-23 13:37:34,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:37:34,184 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:37:34,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:37:34,185 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:37:34,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 13:37:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:37:34,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:37:34,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:37:34,529 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:37:34,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:37:34,613 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:37:34,613 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:37:34,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686788235] [2021-11-23 13:37:34,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686788235] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:37:34,614 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:37:34,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 13:37:34,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389744036] [2021-11-23 13:37:34,614 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:37:34,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:37:34,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:37:34,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:37:34,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:37:34,615 INFO L87 Difference]: Start difference. First operand 362 states and 488 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:35,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:37:35,300 INFO L93 Difference]: Finished difference Result 379 states and 508 transitions. [2021-11-23 13:37:35,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:37:35,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-23 13:37:35,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:37:35,303 INFO L225 Difference]: With dead ends: 379 [2021-11-23 13:37:35,303 INFO L226 Difference]: Without dead ends: 379 [2021-11-23 13:37:35,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:37:35,304 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 390 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:37:35,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 233 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 13:37:35,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-11-23 13:37:35,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 355. [2021-11-23 13:37:35,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 284 states have (on average 1.6690140845070423) internal successors, (474), 354 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:35,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 474 transitions. [2021-11-23 13:37:35,318 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 474 transitions. Word has length 55 [2021-11-23 13:37:35,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:37:35,318 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 474 transitions. [2021-11-23 13:37:35,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:35,319 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 474 transitions. [2021-11-23 13:37:35,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-23 13:37:35,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:37:35,325 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:37:35,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 13:37:35,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:37:35,535 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-23 13:37:35,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:37:35,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1741624488, now seen corresponding path program 1 times [2021-11-23 13:37:35,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:37:35,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269860700] [2021-11-23 13:37:35,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:37:35,536 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:37:35,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:37:35,537 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:37:35,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 13:37:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:37:35,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:37:35,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:37:35,963 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:37:35,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:37:36,103 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:37:36,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:37:36,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269860700] [2021-11-23 13:37:36,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269860700] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:37:36,104 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:37:36,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 13:37:36,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021160551] [2021-11-23 13:37:36,104 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:37:36,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:37:36,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:37:36,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:37:36,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:37:36,106 INFO L87 Difference]: Start difference. First operand 355 states and 474 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 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) [2021-11-23 13:37:36,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:37:36,523 INFO L93 Difference]: Finished difference Result 307 states and 341 transitions. [2021-11-23 13:37:36,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:37:36,524 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 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 55 [2021-11-23 13:37:36,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:37:36,526 INFO L225 Difference]: With dead ends: 307 [2021-11-23 13:37:36,527 INFO L226 Difference]: Without dead ends: 307 [2021-11-23 13:37:36,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:37:36,528 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 1073 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:37:36,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1073 Valid, 724 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:37:36,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-23 13:37:36,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 251. [2021-11-23 13:37:36,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 180 states have (on average 1.5722222222222222) internal successors, (283), 250 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:36,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 283 transitions. [2021-11-23 13:37:36,537 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 283 transitions. Word has length 55 [2021-11-23 13:37:36,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:37:36,537 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 283 transitions. [2021-11-23 13:37:36,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 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) [2021-11-23 13:37:36,538 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 283 transitions. [2021-11-23 13:37:36,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-23 13:37:36,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:37:36,538 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:37:36,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 13:37:36,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:37:36,761 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-23 13:37:36,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:37:36,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1844233692, now seen corresponding path program 1 times [2021-11-23 13:37:36,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:37:36,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920268703] [2021-11-23 13:37:36,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:37:36,762 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:37:36,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:37:36,763 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:37:36,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 13:37:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:37:36,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:37:36,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:37:37,152 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:37:37,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:37:37,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2021-11-23 13:37:37,961 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:37:37,961 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:37:37,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920268703] [2021-11-23 13:37:37,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920268703] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:37:37,962 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:37:37,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-23 13:37:37,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384747407] [2021-11-23 13:37:37,962 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:37:37,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:37:37,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:37:37,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:37:37,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:37:37,964 INFO L87 Difference]: Start difference. First operand 251 states and 283 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:39,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:37:39,261 INFO L93 Difference]: Finished difference Result 444 states and 507 transitions. [2021-11-23 13:37:39,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:37:39,262 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 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 56 [2021-11-23 13:37:39,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:37:39,265 INFO L225 Difference]: With dead ends: 444 [2021-11-23 13:37:39,265 INFO L226 Difference]: Without dead ends: 444 [2021-11-23 13:37:39,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:37:39,266 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 751 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:37:39,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 811 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 13:37:39,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-23 13:37:39,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 249. [2021-11-23 13:37:39,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 180 states have (on average 1.5611111111111111) internal successors, (281), 248 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:39,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 281 transitions. [2021-11-23 13:37:39,275 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 281 transitions. Word has length 56 [2021-11-23 13:37:39,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:37:39,275 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 281 transitions. [2021-11-23 13:37:39,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:39,275 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 281 transitions. [2021-11-23 13:37:39,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 13:37:39,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:37:39,276 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:37:39,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 13:37:39,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:37:39,492 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-23 13:37:39,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:37:39,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1336669598, now seen corresponding path program 1 times [2021-11-23 13:37:39,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:37:39,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780455433] [2021-11-23 13:37:39,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:37:39,493 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:37:39,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:37:39,495 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:37:39,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 13:37:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:37:39,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:37:39,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:37:39,954 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 13:37:39,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-23 13:37:40,018 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 13:37:40,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2021-11-23 13:37:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:37:40,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:37:40,164 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:37:40,164 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:37:40,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780455433] [2021-11-23 13:37:40,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780455433] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:37:40,165 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:37:40,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 13:37:40,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970103963] [2021-11-23 13:37:40,165 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:37:40,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:37:40,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:37:40,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:37:40,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:37:40,166 INFO L87 Difference]: Start difference. First operand 249 states and 281 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:40,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:37:40,644 INFO L93 Difference]: Finished difference Result 256 states and 289 transitions. [2021-11-23 13:37:40,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:37:40,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-23 13:37:40,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:37:40,645 INFO L225 Difference]: With dead ends: 256 [2021-11-23 13:37:40,645 INFO L226 Difference]: Without dead ends: 256 [2021-11-23 13:37:40,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:37:40,646 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 204 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:37:40,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 195 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 13:37:40,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-23 13:37:40,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 253. [2021-11-23 13:37:40,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 185 states have (on average 1.5621621621621622) internal successors, (289), 252 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:40,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 289 transitions. [2021-11-23 13:37:40,653 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 289 transitions. Word has length 57 [2021-11-23 13:37:40,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:37:40,654 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 289 transitions. [2021-11-23 13:37:40,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:40,654 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 289 transitions. [2021-11-23 13:37:40,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 13:37:40,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:37:40,655 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:37:40,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 13:37:40,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:37:40,867 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-23 13:37:40,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:37:40,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1336669599, now seen corresponding path program 1 times [2021-11-23 13:37:40,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:37:40,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573822942] [2021-11-23 13:37:40,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:37:40,868 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:37:40,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:37:40,870 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:37:40,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 13:37:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:37:41,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 13:37:41,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:37:41,509 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-11-23 13:37:41,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2021-11-23 13:37:41,535 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 13:37:41,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 40 [2021-11-23 13:37:41,998 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-23 13:37:41,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 61 [2021-11-23 13:37:42,017 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 13:37:42,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 49 [2021-11-23 13:37:42,377 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:37:42,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:37:44,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 57 [2021-11-23 13:37:44,678 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:37:44,678 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:37:44,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573822942] [2021-11-23 13:37:44,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573822942] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:37:44,678 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:37:44,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-23 13:37:44,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840939950] [2021-11-23 13:37:44,679 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:37:44,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 13:37:44,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:37:44,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 13:37:44,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:37:44,680 INFO L87 Difference]: Start difference. First operand 253 states and 289 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:45,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:37:45,022 INFO L93 Difference]: Finished difference Result 256 states and 292 transitions. [2021-11-23 13:37:45,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:37:45,024 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 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 57 [2021-11-23 13:37:45,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:37:45,025 INFO L225 Difference]: With dead ends: 256 [2021-11-23 13:37:45,026 INFO L226 Difference]: Without dead ends: 256 [2021-11-23 13:37:45,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-11-23 13:37:45,027 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 8 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 349 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:37:45,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 1168 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 349 Unchecked, 0.1s Time] [2021-11-23 13:37:45,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-23 13:37:45,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2021-11-23 13:37:45,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 188 states have (on average 1.553191489361702) internal successors, (292), 255 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:45,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 292 transitions. [2021-11-23 13:37:45,034 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 292 transitions. Word has length 57 [2021-11-23 13:37:45,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:37:45,035 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 292 transitions. [2021-11-23 13:37:45,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:45,035 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 292 transitions. [2021-11-23 13:37:45,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 13:37:45,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:37:45,036 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:37:45,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-23 13:37:45,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:37:45,253 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-23 13:37:45,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:37:45,254 INFO L85 PathProgramCache]: Analyzing trace with hash 2082220642, now seen corresponding path program 1 times [2021-11-23 13:37:45,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:37:45,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710877156] [2021-11-23 13:37:45,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:37:45,255 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:37:45,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:37:45,256 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:37:45,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 13:37:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:37:45,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 13:37:45,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:37:45,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-11-23 13:37:45,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 13:37:45,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-23 13:37:46,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-23 13:37:46,168 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-23 13:37:46,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 62 [2021-11-23 13:37:46,209 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-23 13:37:46,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2021-11-23 13:37:46,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 33 [2021-11-23 13:37:46,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 12 [2021-11-23 13:37:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:37:46,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:37:59,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:37:59,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:37:59,250 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:37:59,250 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:37:59,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710877156] [2021-11-23 13:37:59,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710877156] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:37:59,250 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:37:59,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-23 13:37:59,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846405059] [2021-11-23 13:37:59,250 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:37:59,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 13:37:59,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:37:59,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 13:37:59,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=79, Unknown=2, NotChecked=0, Total=110 [2021-11-23 13:37:59,251 INFO L87 Difference]: Start difference. First operand 256 states and 292 transitions. Second operand has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:38:03,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:38:03,551 INFO L93 Difference]: Finished difference Result 255 states and 291 transitions. [2021-11-23 13:38:03,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:38:03,554 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-23 13:38:03,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:38:03,555 INFO L225 Difference]: With dead ends: 255 [2021-11-23 13:38:03,555 INFO L226 Difference]: Without dead ends: 255 [2021-11-23 13:38:03,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=53, Invalid=127, Unknown=2, NotChecked=0, Total=182 [2021-11-23 13:38:03,556 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 235 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:38:03,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 974 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-23 13:38:03,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-23 13:38:03,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-11-23 13:38:03,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 188 states have (on average 1.547872340425532) internal successors, (291), 254 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:38:03,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 291 transitions. [2021-11-23 13:38:03,563 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 291 transitions. Word has length 60 [2021-11-23 13:38:03,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:38:03,564 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 291 transitions. [2021-11-23 13:38:03,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:38:03,564 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 291 transitions. [2021-11-23 13:38:03,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 13:38:03,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:38:03,565 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:38:03,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:03,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:38:03,779 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-23 13:38:03,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:03,780 INFO L85 PathProgramCache]: Analyzing trace with hash 2082220641, now seen corresponding path program 1 times [2021-11-23 13:38:03,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:38:03,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009409876] [2021-11-23 13:38:03,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:03,781 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:38:03,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:38:03,782 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:38:03,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-23 13:38:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:04,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 13:38:04,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:04,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 13:38:04,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 13:38:04,571 INFO L354 Elim1Store]: treesize reduction 46, result has 20.7 percent of original size [2021-11-23 13:38:04,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 35 [2021-11-23 13:38:04,686 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 13:38:04,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 19 [2021-11-23 13:38:04,727 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:38:04,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:38:06,827 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~mem_track~0#1.base| (_ BitVec 64))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse0 |c_ULTIMATE.start_main_~mem_track~0#1.offset|) |c_ULTIMATE.start_main_#t~mem125#1.base|)) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd .cse0 |c_ULTIMATE.start_main_~argv~0#1.offset|)))))))))))))))) is different from false [2021-11-23 13:38:08,862 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~mem_track~0#1.base| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (let ((.cse1 (bvadd .cse0 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse0 |c_ULTIMATE.start_main_~mem_track~0#1.offset|) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))))))))))))) (_ bv1 1)))) is different from false [2021-11-23 13:38:08,967 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:38:08,967 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:38:08,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2009409876] [2021-11-23 13:38:08,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2009409876] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:38:08,968 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:38:08,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2021-11-23 13:38:08,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555667186] [2021-11-23 13:38:08,978 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:38:08,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 13:38:08,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:38:08,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 13:38:08,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=65, Unknown=2, NotChecked=34, Total=132 [2021-11-23 13:38:08,980 INFO L87 Difference]: Start difference. First operand 255 states and 291 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:38:24,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:38:24,966 INFO L93 Difference]: Finished difference Result 253 states and 288 transitions. [2021-11-23 13:38:24,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:38:24,966 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-23 13:38:24,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:38:24,968 INFO L225 Difference]: With dead ends: 253 [2021-11-23 13:38:24,968 INFO L226 Difference]: Without dead ends: 253 [2021-11-23 13:38:24,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 106 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=51, Invalid=108, Unknown=5, NotChecked=46, Total=210 [2021-11-23 13:38:24,969 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 221 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 541 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:38:24,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 1327 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 491 Invalid, 0 Unknown, 541 Unchecked, 1.6s Time] [2021-11-23 13:38:24,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-23 13:38:24,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2021-11-23 13:38:24,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 188 states have (on average 1.5319148936170213) internal successors, (288), 252 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:38:24,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 288 transitions. [2021-11-23 13:38:24,976 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 288 transitions. Word has length 60 [2021-11-23 13:38:24,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:38:24,976 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 288 transitions. [2021-11-23 13:38:24,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:38:24,977 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 288 transitions. [2021-11-23 13:38:24,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 13:38:24,977 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:38:24,978 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:38:24,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-23 13:38:25,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:38:25,187 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-23 13:38:25,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:25,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1667146188, now seen corresponding path program 1 times [2021-11-23 13:38:25,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:38:25,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916671130] [2021-11-23 13:38:25,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:25,189 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:38:25,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:38:25,190 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:38:25,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-23 13:38:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:25,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 13:38:25,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:25,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2021-11-23 13:38:25,783 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 13:38:25,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-23 13:38:25,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-23 13:38:26,177 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-23 13:38:26,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 44 [2021-11-23 13:38:26,489 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-23 13:38:26,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 47 [2021-11-23 13:38:26,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 34 [2021-11-23 13:38:26,702 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:38:26,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:38:28,867 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem126#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem126#1.base|) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|) v_DerPreprocessor_1)) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|)))))))) (_ bv1 1)))) is different from false [2021-11-23 13:38:30,890 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|) v_DerPreprocessor_1))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))))))))))) is different from false [2021-11-23 13:38:32,951 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem125#1.base| (_ BitVec 64)) (|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse3 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (let ((.cse2 (bvadd .cse3 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse3 |ULTIMATE.start_main_~mem_track~0#1.offset|) |ULTIMATE.start_main_#t~mem125#1.base|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|) v_DerPreprocessor_1)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))))))))) is different from false [2021-11-23 13:38:37,763 INFO L354 Elim1Store]: treesize reduction 9, result has 81.6 percent of original size [2021-11-23 13:38:37,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 81 treesize of output 112 [2021-11-23 13:38:38,246 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:38:38,246 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:38:38,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916671130] [2021-11-23 13:38:38,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916671130] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:38:38,247 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:38:38,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [] total 15 [2021-11-23 13:38:38,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834536356] [2021-11-23 13:38:38,247 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:38:38,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 13:38:38,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:38:38,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 13:38:38,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=120, Unknown=4, NotChecked=72, Total=240 [2021-11-23 13:38:38,249 INFO L87 Difference]: Start difference. First operand 253 states and 288 transitions. Second operand has 16 states, 15 states have (on average 2.8) internal successors, (42), 16 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) [2021-11-23 13:38:41,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:38:41,298 INFO L93 Difference]: Finished difference Result 270 states and 304 transitions. [2021-11-23 13:38:41,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 13:38:41,299 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.8) internal successors, (42), 16 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 64 [2021-11-23 13:38:41,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:38:41,301 INFO L225 Difference]: With dead ends: 270 [2021-11-23 13:38:41,301 INFO L226 Difference]: Without dead ends: 270 [2021-11-23 13:38:41,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 110 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=80, Invalid=200, Unknown=4, NotChecked=96, Total=380 [2021-11-23 13:38:41,302 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 465 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 855 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:38:41,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 994 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 424 Invalid, 0 Unknown, 855 Unchecked, 2.1s Time] [2021-11-23 13:38:41,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-23 13:38:41,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 259. [2021-11-23 13:38:41,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 194 states have (on average 1.5309278350515463) internal successors, (297), 258 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:38:41,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 297 transitions. [2021-11-23 13:38:41,308 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 297 transitions. Word has length 64 [2021-11-23 13:38:41,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:38:41,309 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 297 transitions. [2021-11-23 13:38:41,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.8) internal successors, (42), 16 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) [2021-11-23 13:38:41,309 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 297 transitions. [2021-11-23 13:38:41,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 13:38:41,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:38:41,310 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:38:41,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:41,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:38:41,529 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-23 13:38:41,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:41,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1667146189, now seen corresponding path program 1 times [2021-11-23 13:38:41,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:38:41,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37670330] [2021-11-23 13:38:41,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:41,530 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:38:41,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:38:41,531 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:38:41,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-23 13:38:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:41,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-23 13:38:41,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:42,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-11-23 13:38:42,121 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:38:42,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-23 13:38:42,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 13:38:42,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-23 13:38:42,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-23 13:38:42,400 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-23 13:38:42,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 75 [2021-11-23 13:38:42,442 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-23 13:38:42,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 50 [2021-11-23 13:38:42,687 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-23 13:38:42,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 132 treesize of output 71 [2021-11-23 13:38:42,729 INFO L354 Elim1Store]: treesize reduction 77, result has 13.5 percent of original size [2021-11-23 13:38:42,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 43 [2021-11-23 13:38:42,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 37 [2021-11-23 13:38:42,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-11-23 13:38:42,997 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:38:42,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:38:59,495 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64))) (let ((.cse0 ((_ sign_extend 32) (_ bv0 32))) (.cse1 (let ((.cse3 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|) v_DerPreprocessor_3))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3)))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv1 64))))) (forall ((|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64))) (let ((.cse6 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6)) (.cse5 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|))) (bvule (bvadd ((_ sign_extend 32) (_ bv0 32)) (select (select (store |c_#memory_$Pointer$.offset| .cse4 (store (select |c_#memory_$Pointer$.offset| .cse4) .cse5 v_DerPreprocessor_3)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6) (_ bv1 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse4 (store (select |c_#memory_$Pointer$.base| .cse4) .cse5 v_DerPreprocessor_2)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6))))))) is different from false [2021-11-23 13:39:01,683 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem125#1.base| (_ BitVec 64)) (|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem125#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64))) (let ((.cse0 ((_ sign_extend 32) (_ bv0 32))) (.cse1 (let ((.cse6 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (let ((.cse5 (bvadd .cse6 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse4 (bvadd .cse6 |ULTIMATE.start_main_~mem_track~0#1.offset|))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse4 |ULTIMATE.start_main_#t~mem125#1.offset|))) (.cse3 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse4 |ULTIMATE.start_main_#t~mem125#1.base|)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse5))) (store .cse2 .cse3 (store (select .cse2 .cse3) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|) v_DerPreprocessor_3)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse5))))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 (_ bv1 64) .cse1)))) (forall ((|ULTIMATE.start_main_#t~mem125#1.base| (_ BitVec 64)) (|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem125#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64))) (let ((.cse13 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (let ((.cse10 (bvadd .cse13 |ULTIMATE.start_main_~mem_track~0#1.offset|))) (let ((.cse12 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse10 |ULTIMATE.start_main_#t~mem125#1.base|))) (.cse11 (bvadd .cse13 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse8 (select (select .cse12 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse11)) (.cse9 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|))) (bvule (bvadd ((_ sign_extend 32) (_ bv0 32)) (_ bv1 64) (select (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse10 |ULTIMATE.start_main_#t~mem125#1.offset|)))) (store .cse7 .cse8 (store (select .cse7 .cse8) .cse9 v_DerPreprocessor_3))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse11)) (select |c_#length| (select (select (store .cse12 .cse8 (store (select .cse12 .cse8) .cse9 v_DerPreprocessor_2)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse11))))))))) is different from false [2021-11-23 13:39:02,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:39:02,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:39:02,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:39:03,319 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 13:39:03,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-23 13:39:03,393 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 13:39:03,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:39:03,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37670330] [2021-11-23 13:39:03,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37670330] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:39:03,393 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:39:03,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 10] imperfect sequences [] total 17 [2021-11-23 13:39:03,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689070721] [2021-11-23 13:39:03,394 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:39:03,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 13:39:03,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:39:03,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 13:39:03,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=193, Unknown=5, NotChecked=58, Total=306 [2021-11-23 13:39:03,397 INFO L87 Difference]: Start difference. First operand 259 states and 297 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 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) [2021-11-23 13:39:11,323 WARN L227 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 78 DAG size of output: 41 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:39:27,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:39:27,873 INFO L93 Difference]: Finished difference Result 269 states and 302 transitions. [2021-11-23 13:39:27,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:39:27,875 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 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 64 [2021-11-23 13:39:27,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:39:27,876 INFO L225 Difference]: With dead ends: 269 [2021-11-23 13:39:27,877 INFO L226 Difference]: Without dead ends: 269 [2021-11-23 13:39:27,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 32.2s TimeCoverageRelationStatistics Valid=129, Invalid=426, Unknown=5, NotChecked=90, Total=650 [2021-11-23 13:39:27,878 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 670 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 533 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:39:27,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [670 Valid, 921 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 792 Invalid, 0 Unknown, 533 Unchecked, 11.3s Time] [2021-11-23 13:39:27,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-11-23 13:39:27,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 259. [2021-11-23 13:39:27,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 194 states have (on average 1.5206185567010309) internal successors, (295), 258 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:39:27,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 295 transitions. [2021-11-23 13:39:27,893 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 295 transitions. Word has length 64 [2021-11-23 13:39:27,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:39:27,893 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 295 transitions. [2021-11-23 13:39:27,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 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) [2021-11-23 13:39:27,893 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 295 transitions. [2021-11-23 13:39:27,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-23 13:39:27,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:39:27,894 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 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] [2021-11-23 13:39:27,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-23 13:39:28,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:39:28,094 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-11-23 13:39:28,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:39:28,095 INFO L85 PathProgramCache]: Analyzing trace with hash 580091680, now seen corresponding path program 1 times [2021-11-23 13:39:28,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:39:28,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1165007346] [2021-11-23 13:39:28,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:39:28,096 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:39:28,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:39:28,098 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:39:28,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e3979b-ad7b-450e-bb4a-5060d63f3e2b/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-23 13:39:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:39:28,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 13:39:28,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:39:28,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-11-23 13:39:28,850 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 13:39:28,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2021-11-23 13:39:28,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-23 13:39:29,190 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-23 13:39:29,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 45 [2021-11-23 13:39:29,458 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-23 13:39:29,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 48 [2021-11-23 13:39:29,731 INFO L354 Elim1Store]: treesize reduction 53, result has 18.5 percent of original size [2021-11-23 13:39:29,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 49 [2021-11-23 13:39:29,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 34 [2021-11-23 13:39:29,967 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-23 13:39:29,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:39:44,393 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |ULTIMATE.start_main_#t~mem128#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))))))) (_ bv1 1)))) is different from false [2021-11-23 13:39:46,487 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem126#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem126#1.base|) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|) v_DerPreprocessor_5)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem128#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))))))) (_ bv1 1)))) is different from false [2021-11-23 13:39:48,552 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|) v_DerPreprocessor_5))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem128#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))))))))))))) is different from false [2021-11-23 13:39:50,667 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem125#1.base| (_ BitVec 64)) (|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem126#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse5 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (let ((.cse2 (bvadd .cse5 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse5 |ULTIMATE.start_main_~mem_track~0#1.offset|) |ULTIMATE.start_main_#t~mem125#1.base|)))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem126#1.offset|) v_DerPreprocessor_5)))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem128#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))))))))) (_ bv1 1)))) is different from false