./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test11.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/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_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test11.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/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 32bit --witnessprinter.graph.data.programhash d286f1bc6bef2af97aa9bf8e95cd227fcca3bcb186ca467ee6b24a6fc8e433bc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:06:39,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:06:39,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:06:39,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:06:39,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:06:39,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:06:39,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:06:39,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:06:39,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:06:39,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:06:39,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:06:39,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:06:39,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:06:39,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:06:39,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:06:39,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:06:39,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:06:39,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:06:39,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:06:39,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:06:39,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:06:39,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:06:39,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:06:39,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:06:39,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:06:39,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:06:39,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:06:39,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:06:39,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:06:39,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:06:39,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:06:39,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:06:39,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:06:39,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:06:39,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:06:39,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:06:39,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:06:39,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:06:39,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:06:39,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:06:39,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:06:39,335 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-23 13:06:39,385 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:06:39,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:06:39,390 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:06:39,391 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:06:39,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:06:39,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:06:39,399 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:06:39,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:06:39,400 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:06:39,400 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 13:06:39,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:06:39,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:06:39,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:06:39,403 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 13:06:39,403 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 13:06:39,403 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 13:06:39,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:06:39,403 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 13:06:39,404 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:06:39,404 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:06:39,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:06:39,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:06:39,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:06:39,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:06:39,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:06:39,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:06:39,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:06:39,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:06:39,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:06:39,409 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_fab00f9b-9ec8-4924-a96f-0793c1e56172/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d286f1bc6bef2af97aa9bf8e95cd227fcca3bcb186ca467ee6b24a6fc8e433bc [2021-11-23 13:06:39,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:06:39,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:06:39,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:06:39,752 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:06:39,753 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:06:39,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/ldv-memsafety/memleaks_test11.i [2021-11-23 13:06:39,824 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/data/0a0095ed7/4167716afb6e4fcd9d78ac66f39cff9a/FLAGcd4378158 [2021-11-23 13:06:40,446 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:06:40,447 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/sv-benchmarks/c/ldv-memsafety/memleaks_test11.i [2021-11-23 13:06:40,467 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/data/0a0095ed7/4167716afb6e4fcd9d78ac66f39cff9a/FLAGcd4378158 [2021-11-23 13:06:40,668 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/data/0a0095ed7/4167716afb6e4fcd9d78ac66f39cff9a [2021-11-23 13:06:40,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:06:40,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:06:40,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:06:40,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:06:40,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:06:40,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:06:40" (1/1) ... [2021-11-23 13:06:40,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bea270a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:40, skipping insertion in model container [2021-11-23 13:06:40,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:06:40" (1/1) ... [2021-11-23 13:06:40,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:06:40,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:06:41,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:06:41,215 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 13:06:41,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3f322d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:41, skipping insertion in model container [2021-11-23 13:06:41,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:06:41,217 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 13:06:41,219 INFO L158 Benchmark]: Toolchain (without parser) took 545.28ms. Allocated memory is still 109.1MB. Free memory was 65.3MB in the beginning and 77.0MB in the end (delta: -11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:06:41,220 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 109.1MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:06:41,221 INFO L158 Benchmark]: CACSL2BoogieTranslator took 542.12ms. Allocated memory is still 109.1MB. Free memory was 65.1MB in the beginning and 77.4MB in the end (delta: -12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:06:41,223 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 109.1MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 542.12ms. Allocated memory is still 109.1MB. Free memory was 65.1MB in the beginning and 77.4MB in the end (delta: -12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/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_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test11.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/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 32bit --witnessprinter.graph.data.programhash d286f1bc6bef2af97aa9bf8e95cd227fcca3bcb186ca467ee6b24a6fc8e433bc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:06:43,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:06:43,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:06:43,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:06:43,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:06:43,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:06:43,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:06:43,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:06:43,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:06:43,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:06:43,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:06:43,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:06:43,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:06:43,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:06:43,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:06:43,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:06:43,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:06:43,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:06:43,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:06:43,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:06:43,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:06:43,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:06:43,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:06:43,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:06:43,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:06:43,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:06:43,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:06:43,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:06:43,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:06:43,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:06:43,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:06:43,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:06:43,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:06:43,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:06:43,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:06:43,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:06:43,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:06:43,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:06:43,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:06:43,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:06:43,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:06:43,908 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-23 13:06:43,965 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:06:43,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:06:43,967 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:06:43,967 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:06:43,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:06:43,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:06:43,970 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:06:43,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:06:43,971 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:06:43,971 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 13:06:43,973 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:06:43,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:06:43,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:06:43,974 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 13:06:43,974 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 13:06:43,975 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 13:06:43,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:06:43,975 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 13:06:43,975 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 13:06:43,976 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 13:06:43,976 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:06:43,976 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:06:43,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:06:43,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:06:43,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:06:43,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:06:43,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:06:43,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:06:43,979 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-23 13:06:43,979 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 13:06:43,979 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:06:43,979 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 13:06:43,980 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_fab00f9b-9ec8-4924-a96f-0793c1e56172/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d286f1bc6bef2af97aa9bf8e95cd227fcca3bcb186ca467ee6b24a6fc8e433bc [2021-11-23 13:06:44,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:06:44,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:06:44,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:06:44,428 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:06:44,430 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:06:44,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/ldv-memsafety/memleaks_test11.i [2021-11-23 13:06:44,520 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/data/04164238a/a983c22480ed4b1e96fe10d75431dd8b/FLAG1c7ac4e49 [2021-11-23 13:06:45,362 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:06:45,363 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/sv-benchmarks/c/ldv-memsafety/memleaks_test11.i [2021-11-23 13:06:45,380 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/data/04164238a/a983c22480ed4b1e96fe10d75431dd8b/FLAG1c7ac4e49 [2021-11-23 13:06:45,562 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/data/04164238a/a983c22480ed4b1e96fe10d75431dd8b [2021-11-23 13:06:45,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:06:45,567 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:06:45,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:06:45,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:06:45,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:06:45,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:06:45" (1/1) ... [2021-11-23 13:06:45,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cabb8d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:45, skipping insertion in model container [2021-11-23 13:06:45,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:06:45" (1/1) ... [2021-11-23 13:06:45,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:06:45,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:06:46,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:06:46,420 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 13:06:46,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:06:46,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:06:46,545 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:06:46,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:06:46,675 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:06:46,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:46 WrapperNode [2021-11-23 13:06:46,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:06:46,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:06:46,678 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:06:46,678 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:06:46,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:46" (1/1) ... [2021-11-23 13:06:46,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:46" (1/1) ... [2021-11-23 13:06:46,747 INFO L137 Inliner]: procedures = 169, calls = 87, calls flagged for inlining = 39, calls inlined = 15, statements flattened = 138 [2021-11-23 13:06:46,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:06:46,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:06:46,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:06:46,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:06:46,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:46" (1/1) ... [2021-11-23 13:06:46,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:46" (1/1) ... [2021-11-23 13:06:46,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:46" (1/1) ... [2021-11-23 13:06:46,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:46" (1/1) ... [2021-11-23 13:06:46,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:46" (1/1) ... [2021-11-23 13:06:46,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:46" (1/1) ... [2021-11-23 13:06:46,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:46" (1/1) ... [2021-11-23 13:06:46,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:06:46,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:06:46,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:06:46,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:06:46,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:46" (1/1) ... [2021-11-23 13:06:46,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:06:46,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:06:46,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:06:46,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:06:46,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 13:06:46,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:06:46,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 13:06:46,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 13:06:46,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:06:46,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 13:06:46,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:06:46,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:06:47,029 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:06:47,032 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:06:47,535 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:06:47,543 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:06:47,543 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 13:06:47,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:06:47 BoogieIcfgContainer [2021-11-23 13:06:47,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:06:47,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:06:47,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:06:47,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:06:47,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:06:45" (1/3) ... [2021-11-23 13:06:47,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e31c323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:06:47, skipping insertion in model container [2021-11-23 13:06:47,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:46" (2/3) ... [2021-11-23 13:06:47,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e31c323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:06:47, skipping insertion in model container [2021-11-23 13:06:47,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:06:47" (3/3) ... [2021-11-23 13:06:47,563 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test11.i [2021-11-23 13:06:47,569 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:06:47,574 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2021-11-23 13:06:47,626 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:06:47,634 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 13:06:47,634 INFO L340 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2021-11-23 13:06:47,653 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 53 states have (on average 1.7169811320754718) internal successors, (91), 82 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 13:06:47,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 13:06:47,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:47,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:47,662 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:06:47,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:47,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1804970119, now seen corresponding path program 1 times [2021-11-23 13:06:47,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:47,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667896103] [2021-11-23 13:06:47,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:47,685 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:47,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:47,689 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:47,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 13:06:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:47,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:06:47,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:47,902 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 13:06:47,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:47,949 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 13:06:47,950 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:06:47,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667896103] [2021-11-23 13:06:47,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [667896103] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:47,953 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:47,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:06:47,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718879204] [2021-11-23 13:06:47,957 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:47,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:06:47,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:06:48,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:06:48,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:06:48,009 INFO L87 Difference]: Start difference. First operand has 83 states, 53 states have (on average 1.7169811320754718) internal successors, (91), 82 states have internal predecessors, (91), 0 states have call successors, (0), 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 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 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 13:06:48,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:48,319 INFO L93 Difference]: Finished difference Result 311 states and 333 transitions. [2021-11-23 13:06:48,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:06:48,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-11-23 13:06:48,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:48,347 INFO L225 Difference]: With dead ends: 311 [2021-11-23 13:06:48,347 INFO L226 Difference]: Without dead ends: 303 [2021-11-23 13:06:48,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:06:48,359 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 315 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:48,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 230 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:06:48,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-23 13:06:48,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 83. [2021-11-23 13:06:48,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 54 states have (on average 1.6851851851851851) internal successors, (91), 82 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 13:06:48,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2021-11-23 13:06:48,413 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 7 [2021-11-23 13:06:48,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:48,413 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2021-11-23 13:06:48,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 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 13:06:48,414 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2021-11-23 13:06:48,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 13:06:48,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:48,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:48,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:48,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:06:48,628 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:06:48,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:48,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1806817161, now seen corresponding path program 1 times [2021-11-23 13:06:48,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:48,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134366297] [2021-11-23 13:06:48,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:48,631 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:48,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:48,632 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:48,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 13:06:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:48,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:06:48,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:48,727 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 13:06:48,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:48,769 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 13:06:48,769 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:06:48,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134366297] [2021-11-23 13:06:48,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134366297] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:48,770 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:48,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 13:06:48,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198879731] [2021-11-23 13:06:48,771 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:48,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:06:48,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:06:48,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:06:48,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:06:48,774 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 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 13:06:49,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:49,001 INFO L93 Difference]: Finished difference Result 158 states and 172 transitions. [2021-11-23 13:06:49,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:06:49,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-11-23 13:06:49,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:49,004 INFO L225 Difference]: With dead ends: 158 [2021-11-23 13:06:49,004 INFO L226 Difference]: Without dead ends: 156 [2021-11-23 13:06:49,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 13:06:49,006 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 74 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:49,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 199 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:06:49,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-23 13:06:49,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 81. [2021-11-23 13:06:49,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 52 states have (on average 1.6923076923076923) internal successors, (88), 80 states have internal predecessors, (88), 0 states have call successors, (0), 0 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 13:06:49,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2021-11-23 13:06:49,029 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 7 [2021-11-23 13:06:49,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:49,030 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2021-11-23 13:06:49,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 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 13:06:49,030 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2021-11-23 13:06:49,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 13:06:49,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:49,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:49,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:49,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:06:49,232 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:06:49,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:49,233 INFO L85 PathProgramCache]: Analyzing trace with hash -592189873, now seen corresponding path program 1 times [2021-11-23 13:06:49,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:49,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814696511] [2021-11-23 13:06:49,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:49,234 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:49,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:49,238 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:49,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 13:06:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:49,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:06:49,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:49,336 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 13:06:49,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:49,358 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 13:06:49,359 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:06:49,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814696511] [2021-11-23 13:06:49,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814696511] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:49,360 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:49,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:06:49,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574807629] [2021-11-23 13:06:49,360 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:49,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:06:49,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:06:49,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:06:49,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:06:49,363 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 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 13:06:49,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:49,496 INFO L93 Difference]: Finished difference Result 290 states and 307 transitions. [2021-11-23 13:06:49,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:06:49,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-11-23 13:06:49,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:49,499 INFO L225 Difference]: With dead ends: 290 [2021-11-23 13:06:49,500 INFO L226 Difference]: Without dead ends: 290 [2021-11-23 13:06:49,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:06:49,505 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 289 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:49,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 237 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:06:49,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-23 13:06:49,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 83. [2021-11-23 13:06:49,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 54 states have (on average 1.6666666666666667) internal successors, (90), 82 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:49,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2021-11-23 13:06:49,533 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 9 [2021-11-23 13:06:49,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:49,534 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2021-11-23 13:06:49,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 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 13:06:49,534 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2021-11-23 13:06:49,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 13:06:49,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:49,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:49,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:49,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:06:49,754 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:06:49,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:49,755 INFO L85 PathProgramCache]: Analyzing trace with hash -592189907, now seen corresponding path program 1 times [2021-11-23 13:06:49,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:49,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751091044] [2021-11-23 13:06:49,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:49,756 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:49,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:49,759 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:49,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 13:06:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:49,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:06:49,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:49,896 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 13:06:49,999 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 13:06:49,999 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 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-23 13:06:50,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:50,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:54,419 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 13:06:54,420 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:06:54,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751091044] [2021-11-23 13:06:54,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751091044] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:54,420 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:54,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 13:06:54,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645518082] [2021-11-23 13:06:54,420 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:54,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:06:54,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:06:54,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:06:54,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=25, Unknown=2, NotChecked=0, Total=42 [2021-11-23 13:06:54,422 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 13:06:54,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:54,674 INFO L93 Difference]: Finished difference Result 155 states and 170 transitions. [2021-11-23 13:06:54,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:06:54,675 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 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 9 [2021-11-23 13:06:54,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:54,676 INFO L225 Difference]: With dead ends: 155 [2021-11-23 13:06:54,676 INFO L226 Difference]: Without dead ends: 155 [2021-11-23 13:06:54,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=29, Invalid=41, Unknown=2, NotChecked=0, Total=72 [2021-11-23 13:06:54,678 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 70 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:54,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 196 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 107 Unchecked, 0.2s Time] [2021-11-23 13:06:54,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-23 13:06:54,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 91. [2021-11-23 13:06:54,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 62 states have (on average 1.6290322580645162) internal successors, (101), 90 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:54,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2021-11-23 13:06:54,687 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 9 [2021-11-23 13:06:54,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:54,688 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2021-11-23 13:06:54,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 13:06:54,688 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2021-11-23 13:06:54,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 13:06:54,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:54,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:54,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:54,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:06:54,890 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:06:54,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:54,890 INFO L85 PathProgramCache]: Analyzing trace with hash -592189906, now seen corresponding path program 1 times [2021-11-23 13:06:54,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:54,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045844216] [2021-11-23 13:06:54,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:54,891 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:54,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:54,896 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:54,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 13:06:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:54,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 13:06:54,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:54,987 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 13:06:54,995 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 13:06:55,142 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 13:06:55,143 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 28 treesize of output 30 [2021-11-23 13:06:55,158 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:06:55,159 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 22 treesize of output 22 [2021-11-23 13:06:55,205 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 13:06:55,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:55,759 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 27 treesize of output 25 [2021-11-23 13:06:55,793 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 13:06:55,794 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:06:55,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045844216] [2021-11-23 13:06:55,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045844216] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:55,794 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:55,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-23 13:06:55,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369053769] [2021-11-23 13:06:55,794 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:55,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:06:55,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:06:55,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:06:55,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:06:55,796 INFO L87 Difference]: Start difference. First operand 91 states and 101 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 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 13:06:55,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:55,989 INFO L93 Difference]: Finished difference Result 96 states and 105 transitions. [2021-11-23 13:06:55,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:06:55,990 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 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 9 [2021-11-23 13:06:55,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:55,991 INFO L225 Difference]: With dead ends: 96 [2021-11-23 13:06:55,991 INFO L226 Difference]: Without dead ends: 96 [2021-11-23 13:06:55,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-23 13:06:55,992 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 112 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:55,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 272 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 35 Invalid, 0 Unknown, 100 Unchecked, 0.1s Time] [2021-11-23 13:06:55,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-23 13:06:55,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2021-11-23 13:06:55,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 65 states have (on average 1.6) internal successors, (104), 93 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:55,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2021-11-23 13:06:55,999 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 9 [2021-11-23 13:06:56,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:56,000 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2021-11-23 13:06:56,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 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 13:06:56,000 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2021-11-23 13:06:56,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 13:06:56,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:56,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:56,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:56,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:06:56,214 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:06:56,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:56,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1182817455, now seen corresponding path program 1 times [2021-11-23 13:06:56,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:56,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852083614] [2021-11-23 13:06:56,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:56,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:56,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:56,217 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:56,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 13:06:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:56,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:06:56,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:56,305 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 13:06:56,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:56,330 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 13:06:56,330 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:06:56,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852083614] [2021-11-23 13:06:56,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852083614] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:56,331 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:56,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:06:56,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746302127] [2021-11-23 13:06:56,332 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:56,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:06:56,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:06:56,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:06:56,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:06:56,333 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 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 13:06:56,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:56,426 INFO L93 Difference]: Finished difference Result 155 states and 164 transitions. [2021-11-23 13:06:56,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:06:56,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-11-23 13:06:56,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:56,428 INFO L225 Difference]: With dead ends: 155 [2021-11-23 13:06:56,428 INFO L226 Difference]: Without dead ends: 153 [2021-11-23 13:06:56,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:06:56,430 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 73 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:56,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 352 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:06:56,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-23 13:06:56,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 84. [2021-11-23 13:06:56,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 57 states have (on average 1.5964912280701755) internal successors, (91), 83 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 13:06:56,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2021-11-23 13:06:56,438 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 9 [2021-11-23 13:06:56,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:56,438 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2021-11-23 13:06:56,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 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 13:06:56,439 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2021-11-23 13:06:56,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 13:06:56,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:56,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:56,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:56,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:06:56,652 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:06:56,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:56,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1176169680, now seen corresponding path program 1 times [2021-11-23 13:06:56,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:56,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211870333] [2021-11-23 13:06:56,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:56,654 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:56,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:56,655 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:56,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 13:06:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:56,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:06:56,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:56,818 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 13:06:56,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:56,872 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 13:06:56,873 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:06:56,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211870333] [2021-11-23 13:06:56,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211870333] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:56,873 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:56,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-23 13:06:56,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092824796] [2021-11-23 13:06:56,874 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:56,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:06:56,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:06:56,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:06:56,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:06:56,875 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 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 13:06:57,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:57,092 INFO L93 Difference]: Finished difference Result 151 states and 159 transitions. [2021-11-23 13:06:57,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:06:57,093 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 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 10 [2021-11-23 13:06:57,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:57,094 INFO L225 Difference]: With dead ends: 151 [2021-11-23 13:06:57,094 INFO L226 Difference]: Without dead ends: 151 [2021-11-23 13:06:57,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:06:57,095 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 431 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:57,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 122 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:06:57,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-23 13:06:57,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 83. [2021-11-23 13:06:57,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 57 states have (on average 1.5614035087719298) internal successors, (89), 82 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 13:06:57,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2021-11-23 13:06:57,101 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 10 [2021-11-23 13:06:57,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:57,101 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2021-11-23 13:06:57,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 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 13:06:57,102 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2021-11-23 13:06:57,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 13:06:57,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:57,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:57,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:57,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:06:57,315 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:06:57,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:57,316 INFO L85 PathProgramCache]: Analyzing trace with hash -927578126, now seen corresponding path program 1 times [2021-11-23 13:06:57,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:57,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655626191] [2021-11-23 13:06:57,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:57,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:57,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:57,317 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:57,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 13:06:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:57,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:06:57,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:57,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:57,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:07:03,402 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 13:07:03,402 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:07:03,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655626191] [2021-11-23 13:07:03,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655626191] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:07:03,403 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:07:03,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 13:07:03,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908508950] [2021-11-23 13:07:03,403 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:07:03,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 13:07:03,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:07:03,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 13:07:03,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=50, Unknown=2, NotChecked=0, Total=72 [2021-11-23 13:07:03,405 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 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 13:07:04,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:07:04,119 INFO L93 Difference]: Finished difference Result 147 states and 157 transitions. [2021-11-23 13:07:04,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:07:04,120 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 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 13 [2021-11-23 13:07:04,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:07:04,121 INFO L225 Difference]: With dead ends: 147 [2021-11-23 13:07:04,121 INFO L226 Difference]: Without dead ends: 142 [2021-11-23 13:07:04,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=32, Invalid=76, Unknown=2, NotChecked=0, Total=110 [2021-11-23 13:07:04,123 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 66 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:07:04,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 566 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 305 Invalid, 0 Unknown, 58 Unchecked, 0.6s Time] [2021-11-23 13:07:04,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-23 13:07:04,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 78. [2021-11-23 13:07:04,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.5961538461538463) internal successors, (83), 77 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:04,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2021-11-23 13:07:04,128 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 13 [2021-11-23 13:07:04,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:07:04,128 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2021-11-23 13:07:04,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 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 13:07:04,129 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2021-11-23 13:07:04,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 13:07:04,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:07:04,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:04,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 13:07:04,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:07:04,342 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:07:04,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:04,343 INFO L85 PathProgramCache]: Analyzing trace with hash -493394205, now seen corresponding path program 1 times [2021-11-23 13:07:04,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:07:04,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487218272] [2021-11-23 13:07:04,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:04,343 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:07:04,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:07:04,345 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:07:04,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 13:07:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:04,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:07:04,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:07:04,460 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 13:07:04,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:07:04,482 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 13:07:04,483 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:07:04,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487218272] [2021-11-23 13:07:04,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487218272] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:07:04,483 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:07:04,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:07:04,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383539814] [2021-11-23 13:07:04,483 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:07:04,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:07:04,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:07:04,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:07:04,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:07:04,485 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:04,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:07:04,568 INFO L93 Difference]: Finished difference Result 251 states and 262 transitions. [2021-11-23 13:07:04,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:07:04,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 13:07:04,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:07:04,571 INFO L225 Difference]: With dead ends: 251 [2021-11-23 13:07:04,571 INFO L226 Difference]: Without dead ends: 251 [2021-11-23 13:07:04,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:07:04,573 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 244 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:07:04,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 247 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:07:04,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-23 13:07:04,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 80. [2021-11-23 13:07:04,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 79 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:04,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2021-11-23 13:07:04,586 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 14 [2021-11-23 13:07:04,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:07:04,587 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2021-11-23 13:07:04,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:04,587 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2021-11-23 13:07:04,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 13:07:04,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:07:04,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:04,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-23 13:07:04,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:07:04,801 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:07:04,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:04,802 INFO L85 PathProgramCache]: Analyzing trace with hash -493394216, now seen corresponding path program 1 times [2021-11-23 13:07:04,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:07:04,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349076554] [2021-11-23 13:07:04,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:04,802 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:07:04,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:07:04,803 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:07:04,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 13:07:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:04,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:07:04,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:07:04,899 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 13:07:04,952 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 13:07:04,953 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 19 treesize of output 24 [2021-11-23 13:07:04,989 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 13:07:04,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:07:05,065 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 13:07:05,065 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:07:05,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349076554] [2021-11-23 13:07:05,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349076554] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:07:05,066 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:07:05,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 13:07:05,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154142545] [2021-11-23 13:07:05,066 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:07:05,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:07:05,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:07:05,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:07:05,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:07:05,068 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:05,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:07:05,328 INFO L93 Difference]: Finished difference Result 155 states and 164 transitions. [2021-11-23 13:07:05,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:07:05,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 13:07:05,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:07:05,331 INFO L225 Difference]: With dead ends: 155 [2021-11-23 13:07:05,332 INFO L226 Difference]: Without dead ends: 155 [2021-11-23 13:07:05,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:07:05,333 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 164 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:07:05,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 110 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:07:05,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-23 13:07:05,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 93. [2021-11-23 13:07:05,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 67 states have (on average 1.537313432835821) internal successors, (103), 92 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:05,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2021-11-23 13:07:05,340 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 14 [2021-11-23 13:07:05,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:07:05,340 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2021-11-23 13:07:05,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:05,341 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2021-11-23 13:07:05,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 13:07:05,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:07:05,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:05,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 13:07:05,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:07:05,555 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:07:05,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:05,555 INFO L85 PathProgramCache]: Analyzing trace with hash -493394215, now seen corresponding path program 1 times [2021-11-23 13:07:05,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:07:05,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865041862] [2021-11-23 13:07:05,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:05,556 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:07:05,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:07:05,557 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:07:05,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 13:07:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:05,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 13:07:05,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:07:05,665 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 13:07:05,779 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 13:07:05,779 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 12 treesize of output 14 [2021-11-23 13:07:05,821 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 13:07:05,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:07:06,541 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 13:07:06,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:07:06,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865041862] [2021-11-23 13:07:06,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865041862] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:07:06,542 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:07:06,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 10 [2021-11-23 13:07:06,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149292365] [2021-11-23 13:07:06,542 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:07:06,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 13:07:06,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:07:06,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 13:07:06,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:07:06,544 INFO L87 Difference]: Start difference. First operand 93 states and 103 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:07,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:07:07,356 INFO L93 Difference]: Finished difference Result 229 states and 237 transitions. [2021-11-23 13:07:07,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 13:07:07,357 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 13:07:07,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:07:07,358 INFO L225 Difference]: With dead ends: 229 [2021-11-23 13:07:07,359 INFO L226 Difference]: Without dead ends: 229 [2021-11-23 13:07:07,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-23 13:07:07,360 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 346 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:07:07,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 561 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 180 Invalid, 0 Unknown, 141 Unchecked, 0.6s Time] [2021-11-23 13:07:07,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-11-23 13:07:07,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 124. [2021-11-23 13:07:07,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 98 states have (on average 1.5612244897959184) internal successors, (153), 123 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:07,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 153 transitions. [2021-11-23 13:07:07,371 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 153 transitions. Word has length 14 [2021-11-23 13:07:07,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:07:07,371 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 153 transitions. [2021-11-23 13:07:07,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:07,372 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 153 transitions. [2021-11-23 13:07:07,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 13:07:07,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:07:07,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:07,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-23 13:07:07,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:07:07,585 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:07:07,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:07,586 INFO L85 PathProgramCache]: Analyzing trace with hash 186664154, now seen corresponding path program 1 times [2021-11-23 13:07:07,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:07:07,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145773426] [2021-11-23 13:07:07,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:07,586 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:07:07,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:07:07,587 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:07:07,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 13:07:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:07,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:07:07,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:07:07,700 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 13:07:07,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:07:07,742 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 13:07:07,742 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:07:07,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145773426] [2021-11-23 13:07:07,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145773426] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:07:07,743 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:07:07,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:07:07,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482710787] [2021-11-23 13:07:07,743 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:07:07,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:07:07,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:07:07,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:07:07,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:07:07,745 INFO L87 Difference]: Start difference. First operand 124 states and 153 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:07,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:07:07,839 INFO L93 Difference]: Finished difference Result 144 states and 150 transitions. [2021-11-23 13:07:07,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:07:07,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 13:07:07,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:07:07,841 INFO L225 Difference]: With dead ends: 144 [2021-11-23 13:07:07,842 INFO L226 Difference]: Without dead ends: 142 [2021-11-23 13:07:07,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:07:07,843 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 65 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:07:07,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 316 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:07:07,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-23 13:07:07,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 106. [2021-11-23 13:07:07,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 82 states have (on average 1.548780487804878) internal successors, (127), 105 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:07,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2021-11-23 13:07:07,849 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 14 [2021-11-23 13:07:07,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:07:07,849 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2021-11-23 13:07:07,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:07,851 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2021-11-23 13:07:07,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 13:07:07,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:07:07,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:07,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 13:07:08,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:07:08,052 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:07:08,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:08,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1886496021, now seen corresponding path program 1 times [2021-11-23 13:07:08,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:07:08,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689093162] [2021-11-23 13:07:08,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:08,053 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:07:08,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:07:08,054 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:07:08,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 13:07:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:08,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:07:08,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:07:08,386 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 13:07:08,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:07:08,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:07:08,471 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:07:08,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689093162] [2021-11-23 13:07:08,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689093162] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:07:08,471 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:07:08,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-11-23 13:07:08,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295663159] [2021-11-23 13:07:08,472 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:07:08,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:07:08,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:07:08,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:07:08,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:07:08,473 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:08,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:07:08,533 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2021-11-23 13:07:08,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:07:08,534 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 13:07:08,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:07:08,535 INFO L225 Difference]: With dead ends: 122 [2021-11-23 13:07:08,535 INFO L226 Difference]: Without dead ends: 122 [2021-11-23 13:07:08,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:07:08,536 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 57 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:07:08,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 285 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 26 Unchecked, 0.1s Time] [2021-11-23 13:07:08,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-23 13:07:08,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 106. [2021-11-23 13:07:08,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 82 states have (on average 1.5365853658536586) internal successors, (126), 105 states have internal predecessors, (126), 0 states have call successors, (0), 0 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 13:07:08,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 126 transitions. [2021-11-23 13:07:08,541 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 126 transitions. Word has length 15 [2021-11-23 13:07:08,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:07:08,542 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 126 transitions. [2021-11-23 13:07:08,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:08,543 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 126 transitions. [2021-11-23 13:07:08,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 13:07:08,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:07:08,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:08,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 13:07:08,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:07:08,754 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:07:08,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:08,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1705438503, now seen corresponding path program 1 times [2021-11-23 13:07:08,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:07:08,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803666069] [2021-11-23 13:07:08,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:08,755 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:07:08,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:07:08,756 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:07:08,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 13:07:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:08,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 13:07:08,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:07:08,876 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 13:07:08,961 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 13:07:08,962 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 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-23 13:07:09,103 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 13:07:09,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:07:13,271 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 13:07:13,271 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:07:13,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803666069] [2021-11-23 13:07:13,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803666069] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:07:13,272 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:07:13,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2021-11-23 13:07:13,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612980107] [2021-11-23 13:07:13,272 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:07:13,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 13:07:13,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:07:13,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 13:07:13,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=43, Unknown=1, NotChecked=0, Total=72 [2021-11-23 13:07:13,273 INFO L87 Difference]: Start difference. First operand 106 states and 126 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 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 13:07:13,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:07:13,416 INFO L93 Difference]: Finished difference Result 121 states and 143 transitions. [2021-11-23 13:07:13,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:07:13,416 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 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 16 [2021-11-23 13:07:13,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:07:13,417 INFO L225 Difference]: With dead ends: 121 [2021-11-23 13:07:13,417 INFO L226 Difference]: Without dead ends: 121 [2021-11-23 13:07:13,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=54, Invalid=77, Unknown=1, NotChecked=0, Total=132 [2021-11-23 13:07:13,419 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 114 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:07:13,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 188 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 70 Unchecked, 0.0s Time] [2021-11-23 13:07:13,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-23 13:07:13,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 105. [2021-11-23 13:07:13,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 82 states have (on average 1.524390243902439) internal successors, (125), 104 states have internal predecessors, (125), 0 states have call successors, (0), 0 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 13:07:13,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 125 transitions. [2021-11-23 13:07:13,424 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 125 transitions. Word has length 16 [2021-11-23 13:07:13,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:07:13,425 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 125 transitions. [2021-11-23 13:07:13,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 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 13:07:13,425 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 125 transitions. [2021-11-23 13:07:13,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 13:07:13,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:07:13,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:13,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 13:07:13,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:07:13,639 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:07:13,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:13,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1705438502, now seen corresponding path program 1 times [2021-11-23 13:07:13,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:07:13,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936135109] [2021-11-23 13:07:13,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:13,640 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:07:13,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:07:13,642 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:07:13,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 13:07:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:13,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-23 13:07:13,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:07:13,747 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 13:07:13,753 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 13:07:13,855 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:07:13,856 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 18 treesize of output 18 [2021-11-23 13:07:13,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-23 13:07:13,969 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:07:13,970 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 18 treesize of output 18 [2021-11-23 13:07:13,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-23 13:07:14,045 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 13:07:14,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:07:14,448 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 13:07:14,448 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 34 treesize of output 33 [2021-11-23 13:07:15,112 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 25 treesize of output 23 [2021-11-23 13:07:15,155 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 13:07:15,155 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:07:15,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936135109] [2021-11-23 13:07:15,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936135109] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:07:15,156 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:07:15,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 12 [2021-11-23 13:07:15,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122335995] [2021-11-23 13:07:15,156 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:07:15,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 13:07:15,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:07:15,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 13:07:15,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-23 13:07:15,157 INFO L87 Difference]: Start difference. First operand 105 states and 125 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 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 13:07:16,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:07:16,271 INFO L93 Difference]: Finished difference Result 157 states and 161 transitions. [2021-11-23 13:07:16,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 13:07:16,271 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 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 16 [2021-11-23 13:07:16,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:07:16,273 INFO L225 Difference]: With dead ends: 157 [2021-11-23 13:07:16,273 INFO L226 Difference]: Without dead ends: 157 [2021-11-23 13:07:16,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2021-11-23 13:07:16,275 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 566 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:07:16,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 315 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 263 Invalid, 0 Unknown, 109 Unchecked, 0.7s Time] [2021-11-23 13:07:16,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-23 13:07:16,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 103. [2021-11-23 13:07:16,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 82 states have (on average 1.5) internal successors, (123), 102 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:16,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 123 transitions. [2021-11-23 13:07:16,281 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 123 transitions. Word has length 16 [2021-11-23 13:07:16,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:07:16,281 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 123 transitions. [2021-11-23 13:07:16,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 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 13:07:16,282 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 123 transitions. [2021-11-23 13:07:16,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 13:07:16,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:07:16,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:16,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 13:07:16,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:07:16,501 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:07:16,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:16,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1751106330, now seen corresponding path program 1 times [2021-11-23 13:07:16,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:07:16,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068179174] [2021-11-23 13:07:16,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:16,502 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:07:16,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:07:16,503 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:07:16,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 13:07:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:16,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 13:07:16,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:07:16,699 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 11 treesize of output 7 [2021-11-23 13:07:16,756 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 13:07:16,880 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-23 13:07:16,881 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 42 treesize of output 40 [2021-11-23 13:07:17,040 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:07:17,040 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 57 [2021-11-23 13:07:17,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:07:17,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:07:17,573 INFO L354 Elim1Store]: treesize reduction 5, result has 75.0 percent of original size [2021-11-23 13:07:17,573 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 83 treesize of output 82 [2021-11-23 13:07:17,695 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 13:07:17,696 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:07:17,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068179174] [2021-11-23 13:07:17,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068179174] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:07:17,696 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:07:17,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 8] imperfect sequences [] total 19 [2021-11-23 13:07:17,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217895797] [2021-11-23 13:07:17,696 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:07:17,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 13:07:17,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:07:17,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 13:07:17,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-11-23 13:07:17,698 INFO L87 Difference]: Start difference. First operand 103 states and 123 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 20 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 13:07:19,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:07:19,715 INFO L93 Difference]: Finished difference Result 115 states and 135 transitions. [2021-11-23 13:07:19,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 13:07:19,716 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 20 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 18 [2021-11-23 13:07:19,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:07:19,717 INFO L225 Difference]: With dead ends: 115 [2021-11-23 13:07:19,717 INFO L226 Difference]: Without dead ends: 115 [2021-11-23 13:07:19,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=199, Invalid=731, Unknown=0, NotChecked=0, Total=930 [2021-11-23 13:07:19,718 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 180 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:07:19,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 431 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 297 Invalid, 0 Unknown, 77 Unchecked, 0.6s Time] [2021-11-23 13:07:19,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-23 13:07:19,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 108. [2021-11-23 13:07:19,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 87 states have (on average 1.4827586206896552) internal successors, (129), 107 states have internal predecessors, (129), 0 states have call successors, (0), 0 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 13:07:19,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 129 transitions. [2021-11-23 13:07:19,724 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 129 transitions. Word has length 18 [2021-11-23 13:07:19,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:07:19,725 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 129 transitions. [2021-11-23 13:07:19,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 20 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 13:07:19,725 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 129 transitions. [2021-11-23 13:07:19,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 13:07:19,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:07:19,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:19,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-23 13:07:19,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:07:19,952 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:07:19,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:19,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1751106331, now seen corresponding path program 1 times [2021-11-23 13:07:19,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:07:19,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281092541] [2021-11-23 13:07:19,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:19,954 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:07:19,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:07:19,954 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:07:19,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 13:07:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:20,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 13:07:20,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:07:20,047 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 13:07:20,079 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:07:20,079 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 16 treesize of output 16 [2021-11-23 13:07:20,138 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 11 treesize of output 7 [2021-11-23 13:07:20,154 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 11 treesize of output 7 [2021-11-23 13:07:20,288 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-23 13:07:20,289 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 63 treesize of output 45 [2021-11-23 13:07:20,307 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 13:07:20,307 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 44 treesize of output 39 [2021-11-23 13:07:20,416 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 39 treesize of output 27 [2021-11-23 13:07:20,420 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 24 treesize of output 16 [2021-11-23 13:07:20,491 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 13:07:20,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:07:20,893 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:07:20,894 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 70 treesize of output 74 [2021-11-23 13:07:22,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:07:22,302 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 13:07:22,302 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:07:22,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281092541] [2021-11-23 13:07:22,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281092541] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:07:22,303 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:07:22,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 17 [2021-11-23 13:07:22,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853820419] [2021-11-23 13:07:22,303 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:07:22,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 13:07:22,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:07:22,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 13:07:22,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-11-23 13:07:22,305 INFO L87 Difference]: Start difference. First operand 108 states and 129 transitions. Second operand has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 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 13:07:25,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:07:25,992 INFO L93 Difference]: Finished difference Result 153 states and 157 transitions. [2021-11-23 13:07:25,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-23 13:07:25,993 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 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 18 [2021-11-23 13:07:25,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:07:25,994 INFO L225 Difference]: With dead ends: 153 [2021-11-23 13:07:25,994 INFO L226 Difference]: Without dead ends: 153 [2021-11-23 13:07:25,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=251, Invalid=1009, Unknown=0, NotChecked=0, Total=1260 [2021-11-23 13:07:25,996 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 509 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:07:25,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 593 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 650 Invalid, 0 Unknown, 71 Unchecked, 2.3s Time] [2021-11-23 13:07:25,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-23 13:07:26,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 110. [2021-11-23 13:07:26,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 90 states have (on average 1.4444444444444444) internal successors, (130), 109 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:26,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 130 transitions. [2021-11-23 13:07:26,002 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 130 transitions. Word has length 18 [2021-11-23 13:07:26,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:07:26,002 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 130 transitions. [2021-11-23 13:07:26,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 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 13:07:26,003 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 130 transitions. [2021-11-23 13:07:26,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 13:07:26,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:07:26,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:26,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-23 13:07:26,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:07:26,225 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:07:26,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:26,226 INFO L85 PathProgramCache]: Analyzing trace with hash 941759704, now seen corresponding path program 1 times [2021-11-23 13:07:26,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:07:26,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519706158] [2021-11-23 13:07:26,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:26,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:07:26,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:07:26,227 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:07:26,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-23 13:07:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:26,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:07:26,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:07:26,345 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 13:07:26,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:07:26,390 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 13:07:26,390 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:07:26,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [519706158] [2021-11-23 13:07:26,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [519706158] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:07:26,390 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:07:26,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:07:26,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917671259] [2021-11-23 13:07:26,391 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:07:26,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:07:26,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:07:26,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:07:26,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:07:26,392 INFO L87 Difference]: Start difference. First operand 110 states and 130 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:26,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:07:26,480 INFO L93 Difference]: Finished difference Result 132 states and 135 transitions. [2021-11-23 13:07:26,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:07:26,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-23 13:07:26,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:07:26,482 INFO L225 Difference]: With dead ends: 132 [2021-11-23 13:07:26,482 INFO L226 Difference]: Without dead ends: 132 [2021-11-23 13:07:26,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:07:26,483 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 70 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:07:26,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 284 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:07:26,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-23 13:07:26,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 104. [2021-11-23 13:07:26,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 85 states have (on average 1.4470588235294117) internal successors, (123), 103 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:26,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2021-11-23 13:07:26,488 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 18 [2021-11-23 13:07:26,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:07:26,489 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2021-11-23 13:07:26,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:26,489 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2021-11-23 13:07:26,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 13:07:26,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:07:26,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:26,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-23 13:07:26,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:07:26,696 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:07:26,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:26,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1593270845, now seen corresponding path program 1 times [2021-11-23 13:07:26,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:07:26,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11833656] [2021-11-23 13:07:26,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:26,698 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:07:26,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:07:26,699 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:07:26,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-23 13:07:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:26,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 13:07:26,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:07:29,264 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 13:07:29,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:07:36,246 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 13:07:36,247 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:07:36,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11833656] [2021-11-23 13:07:36,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11833656] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:07:36,247 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:07:36,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-23 13:07:36,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121892777] [2021-11-23 13:07:36,247 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:07:36,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 13:07:36,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:07:36,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 13:07:36,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=167, Unknown=4, NotChecked=0, Total=210 [2021-11-23 13:07:36,249 INFO L87 Difference]: Start difference. First operand 104 states and 123 transitions. Second operand has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 13:07:38,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:07:38,806 INFO L93 Difference]: Finished difference Result 106 states and 124 transitions. [2021-11-23 13:07:38,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 13:07:38,806 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-23 13:07:38,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:07:38,807 INFO L225 Difference]: With dead ends: 106 [2021-11-23 13:07:38,807 INFO L226 Difference]: Without dead ends: 96 [2021-11-23 13:07:38,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=65, Invalid=272, Unknown=5, NotChecked=0, Total=342 [2021-11-23 13:07:38,808 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 7 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 132 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:07:38,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 409 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 180 Invalid, 0 Unknown, 132 Unchecked, 0.3s Time] [2021-11-23 13:07:38,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-23 13:07:38,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-11-23 13:07:38,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 77 states have (on average 1.4805194805194806) internal successors, (114), 95 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:38,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 114 transitions. [2021-11-23 13:07:38,813 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 114 transitions. Word has length 21 [2021-11-23 13:07:38,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:07:38,813 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 114 transitions. [2021-11-23 13:07:38,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 13:07:38,813 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 114 transitions. [2021-11-23 13:07:38,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 13:07:38,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:07:38,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:38,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-23 13:07:39,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:07:39,025 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:07:39,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:39,025 INFO L85 PathProgramCache]: Analyzing trace with hash -373354461, now seen corresponding path program 1 times [2021-11-23 13:07:39,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:07:39,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620784192] [2021-11-23 13:07:39,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:39,026 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:07:39,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:07:39,027 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:07:39,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-23 13:07:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:39,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-23 13:07:39,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:07:39,176 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 13:07:39,203 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:07:39,203 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 17 treesize of output 17 [2021-11-23 13:07:39,239 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 11 treesize of output 7 [2021-11-23 13:07:39,252 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 11 treesize of output 7 [2021-11-23 13:07:39,295 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 13:07:39,446 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 13:07:39,446 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 65 treesize of output 51 [2021-11-23 13:07:39,471 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 13:07:39,472 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 54 treesize of output 48 [2021-11-23 13:07:39,578 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 47 treesize of output 39 [2021-11-23 13:07:39,726 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-23 13:07:39,726 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 26 [2021-11-23 13:07:39,810 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 13:07:39,810 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 23 treesize of output 28 [2021-11-23 13:07:39,858 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 13:07:39,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:07:51,871 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 135 treesize of output 97 [2021-11-23 13:07:53,898 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_ldv_malloc_#res#1.base_77| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~1#1.offset| (_ BitVec 32))) (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base|) |c_ULTIMATE.start_entry_point_~cfg~1#1.offset| |v_ULTIMATE.start_ldv_malloc_#res#1.base_77|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base|) |c_ULTIMATE.start_entry_point_~cfg~1#1.offset| |ULTIMATE.start_entry_point_~fe~1#1.offset|)) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)) |v_ULTIMATE.start_ldv_malloc_#res#1.base_77|)) is different from false [2021-11-23 13:07:53,942 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:07:53,943 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 420 treesize of output 364 [2021-11-23 13:07:54,100 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 13:07:54,100 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:07:54,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620784192] [2021-11-23 13:07:54,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620784192] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:07:54,101 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:07:54,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 21 [2021-11-23 13:07:54,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735348984] [2021-11-23 13:07:54,101 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:07:54,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-23 13:07:54,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:07:54,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-23 13:07:54,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=369, Unknown=2, NotChecked=38, Total=462 [2021-11-23 13:07:54,103 INFO L87 Difference]: Start difference. First operand 96 states and 114 transitions. Second operand has 22 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:02,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:08:02,526 INFO L93 Difference]: Finished difference Result 119 states and 126 transitions. [2021-11-23 13:08:02,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 13:08:02,526 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-23 13:08:02,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:08:02,528 INFO L225 Difference]: With dead ends: 119 [2021-11-23 13:08:02,529 INFO L226 Difference]: Without dead ends: 119 [2021-11-23 13:08:02,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=147, Invalid=785, Unknown=2, NotChecked=58, Total=992 [2021-11-23 13:08:02,533 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 135 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 299 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:08:02,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 556 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 361 Invalid, 0 Unknown, 299 Unchecked, 0.7s Time] [2021-11-23 13:08:02,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-23 13:08:02,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 95. [2021-11-23 13:08:02,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 77 states have (on average 1.4545454545454546) internal successors, (112), 94 states have internal predecessors, (112), 0 states have call successors, (0), 0 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 13:08:02,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 112 transitions. [2021-11-23 13:08:02,548 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 112 transitions. Word has length 23 [2021-11-23 13:08:02,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:08:02,549 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 112 transitions. [2021-11-23 13:08:02,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:02,549 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 112 transitions. [2021-11-23 13:08:02,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 13:08:02,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:02,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:08:02,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-23 13:08:02,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:08:02,770 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:08:02,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:02,771 INFO L85 PathProgramCache]: Analyzing trace with hash -373354460, now seen corresponding path program 1 times [2021-11-23 13:08:02,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:08:02,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994165815] [2021-11-23 13:08:02,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:02,771 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:08:02,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:08:02,781 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:08:02,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-23 13:08:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:02,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-23 13:08:02,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:08:02,926 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 13:08:02,969 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:08:02,970 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 16 treesize of output 16 [2021-11-23 13:08:03,015 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 11 treesize of output 7 [2021-11-23 13:08:03,028 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 11 treesize of output 7 [2021-11-23 13:08:03,131 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 13:08:03,141 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 13:08:03,378 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 13:08:03,378 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 70 treesize of output 56 [2021-11-23 13:08:03,406 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 13:08:03,406 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 71 treesize of output 61 [2021-11-23 13:08:03,795 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-23 13:08:03,796 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 50 [2021-11-23 13:08:03,804 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-23 13:08:03,804 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 31 [2021-11-23 13:08:03,971 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 13:08:03,972 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 33 treesize of output 35 [2021-11-23 13:08:03,982 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:08:03,982 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 27 treesize of output 27 [2021-11-23 13:08:04,051 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 13:08:04,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:08:16,321 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 537 treesize of output 499 [2021-11-23 13:08:16,327 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 499 treesize of output 497 [2021-11-23 13:08:18,572 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_ldv_malloc_#res#1.base_84| (_ BitVec 32))) (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base|) |c_ULTIMATE.start_entry_point_~cfg~1#1.offset| |v_ULTIMATE.start_ldv_malloc_#res#1.base_84|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base|) |c_ULTIMATE.start_entry_point_~cfg~1#1.offset| (_ bv0 32))) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)) |v_ULTIMATE.start_ldv_malloc_#res#1.base_84|)) (forall ((|v_ULTIMATE.start_ldv_malloc_#res#1.base_84| (_ BitVec 32))) (bvule (bvadd (_ bv4 32) (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base|) |c_ULTIMATE.start_entry_point_~cfg~1#1.offset| (_ bv0 32))))) (select (select .cse1 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base|) |c_ULTIMATE.start_entry_point_~cfg~1#1.offset| |v_ULTIMATE.start_ldv_malloc_#res#1.base_84|)) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)) (select (select .cse1 |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)))) |c_ULTIMATE.start_ldv_malloc_~size#1|)) (forall ((|v_ULTIMATE.start_ldv_malloc_#res#1.base_84| (_ BitVec 32))) (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base|) |c_ULTIMATE.start_entry_point_~cfg~1#1.offset| (_ bv0 32))))) (select (select .cse3 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base|) |c_ULTIMATE.start_entry_point_~cfg~1#1.offset| |v_ULTIMATE.start_ldv_malloc_#res#1.base_84|)) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)) (select (select .cse3 |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))))) (bvule .cse2 (bvadd (_ bv4 32) .cse2))))) is different from false [2021-11-23 13:08:33,354 WARN L227 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:08:33,476 INFO L354 Elim1Store]: treesize reduction 53, result has 36.1 percent of original size [2021-11-23 13:08:33,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 346 treesize of output 327 [2021-11-23 13:08:33,588 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-11-23 13:08:33,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 306 treesize of output 262 [2021-11-23 13:08:33,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:33,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:33,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:33,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 493 treesize of output 429 [2021-11-23 13:08:33,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:33,863 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 13:08:33,863 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:08:33,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994165815] [2021-11-23 13:08:33,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994165815] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:33,864 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:33,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16, 16] imperfect sequences [] total 27 [2021-11-23 13:08:33,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189173461] [2021-11-23 13:08:33,864 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:33,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-23 13:08:33,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:08:33,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-23 13:08:33,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=623, Unknown=7, NotChecked=50, Total=756 [2021-11-23 13:08:33,866 INFO L87 Difference]: Start difference. First operand 95 states and 112 transitions. Second operand has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:40,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:08:40,307 INFO L93 Difference]: Finished difference Result 138 states and 146 transitions. [2021-11-23 13:08:40,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-23 13:08:40,308 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-23 13:08:40,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:08:40,309 INFO L225 Difference]: With dead ends: 138 [2021-11-23 13:08:40,310 INFO L226 Difference]: Without dead ends: 138 [2021-11-23 13:08:40,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 34.5s TimeCoverageRelationStatistics Valid=174, Invalid=1229, Unknown=7, NotChecked=72, Total=1482 [2021-11-23 13:08:40,311 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 326 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 637 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:08:40,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 1024 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 383 Invalid, 0 Unknown, 637 Unchecked, 0.8s Time] [2021-11-23 13:08:40,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-23 13:08:40,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 94. [2021-11-23 13:08:40,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 77 states have (on average 1.4285714285714286) internal successors, (110), 93 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:40,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 110 transitions. [2021-11-23 13:08:40,317 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 110 transitions. Word has length 23 [2021-11-23 13:08:40,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:08:40,317 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 110 transitions. [2021-11-23 13:08:40,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:40,318 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 110 transitions. [2021-11-23 13:08:40,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 13:08:40,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:40,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:08:40,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-23 13:08:40,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:08:40,519 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:08:40,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:40,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1310912097, now seen corresponding path program 1 times [2021-11-23 13:08:40,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:08:40,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [18413448] [2021-11-23 13:08:40,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:40,521 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:08:40,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:08:40,521 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:08:40,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-23 13:08:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:40,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:08:40,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:08:40,666 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 13:08:40,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:08:40,703 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 13:08:40,703 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:08:40,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [18413448] [2021-11-23 13:08:40,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [18413448] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:40,704 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:40,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:08:40,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929483065] [2021-11-23 13:08:40,704 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:40,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:08:40,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:08:40,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:08:40,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:08:40,705 INFO L87 Difference]: Start difference. First operand 94 states and 110 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:40,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:08:40,776 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2021-11-23 13:08:40,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:08:40,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-23 13:08:40,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:08:40,778 INFO L225 Difference]: With dead ends: 111 [2021-11-23 13:08:40,778 INFO L226 Difference]: Without dead ends: 111 [2021-11-23 13:08:40,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:08:40,779 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 96 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:08:40,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 207 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:08:40,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-23 13:08:40,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 90. [2021-11-23 13:08:40,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 73 states have (on average 1.4109589041095891) internal successors, (103), 89 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:40,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2021-11-23 13:08:40,783 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 24 [2021-11-23 13:08:40,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:08:40,784 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2021-11-23 13:08:40,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:40,784 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2021-11-23 13:08:40,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 13:08:40,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:40,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:08:40,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-23 13:08:40,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:08:40,985 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:08:40,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:40,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1312759139, now seen corresponding path program 1 times [2021-11-23 13:08:40,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:08:40,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717834308] [2021-11-23 13:08:40,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:40,987 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:08:40,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:08:40,988 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:08:41,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-23 13:08:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:41,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:08:41,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:08:41,153 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 13:08:41,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:08:41,211 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 13:08:41,212 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:08:41,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717834308] [2021-11-23 13:08:41,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1717834308] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:41,212 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:41,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 13:08:41,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118106977] [2021-11-23 13:08:41,213 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:41,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:08:41,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:08:41,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:08:41,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:08:41,214 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:41,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:08:41,388 INFO L93 Difference]: Finished difference Result 99 states and 114 transitions. [2021-11-23 13:08:41,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:08:41,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-23 13:08:41,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:08:41,389 INFO L225 Difference]: With dead ends: 99 [2021-11-23 13:08:41,389 INFO L226 Difference]: Without dead ends: 99 [2021-11-23 13:08:41,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 43 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 13:08:41,390 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 60 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:08:41,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 99 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:08:41,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-23 13:08:41,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 88. [2021-11-23 13:08:41,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 73 states have (on average 1.36986301369863) internal successors, (100), 87 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:41,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2021-11-23 13:08:41,395 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 24 [2021-11-23 13:08:41,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:08:41,395 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2021-11-23 13:08:41,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:41,395 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2021-11-23 13:08:41,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 13:08:41,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:41,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:08:41,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-23 13:08:41,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:08:41,602 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:08:41,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:41,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1312759140, now seen corresponding path program 1 times [2021-11-23 13:08:41,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:08:41,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011025571] [2021-11-23 13:08:41,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:41,603 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:08:41,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:08:41,604 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:08:41,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-23 13:08:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:41,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-23 13:08:41,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:08:41,729 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 13:08:41,739 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 13:08:41,831 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 13:08:41,831 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 12 treesize of output 18 [2021-11-23 13:08:41,850 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:08:41,850 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 16 treesize of output 16 [2021-11-23 13:08:41,987 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:08:41,987 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 17 treesize of output 17 [2021-11-23 13:08:41,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-23 13:08:42,185 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 13:08:42,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:08:44,879 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 13:08:44,879 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 36 treesize of output 35 [2021-11-23 13:08:46,606 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 27 treesize of output 25 [2021-11-23 13:08:46,652 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 13:08:46,652 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:08:46,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011025571] [2021-11-23 13:08:46,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011025571] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:46,653 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:46,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2021-11-23 13:08:46,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113492646] [2021-11-23 13:08:46,653 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:46,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 13:08:46,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:08:46,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 13:08:46,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=172, Unknown=1, NotChecked=0, Total=210 [2021-11-23 13:08:46,655 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand has 15 states, 14 states have (on average 3.357142857142857) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:47,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:08:47,927 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2021-11-23 13:08:47,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 13:08:47,927 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.357142857142857) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-23 13:08:47,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:08:47,928 INFO L225 Difference]: With dead ends: 105 [2021-11-23 13:08:47,928 INFO L226 Difference]: Without dead ends: 105 [2021-11-23 13:08:47,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=100, Invalid=405, Unknown=1, NotChecked=0, Total=506 [2021-11-23 13:08:47,930 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 385 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:08:47,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 337 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 194 Invalid, 0 Unknown, 76 Unchecked, 0.7s Time] [2021-11-23 13:08:47,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-23 13:08:47,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 86. [2021-11-23 13:08:47,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 73 states have (on average 1.3287671232876712) internal successors, (97), 85 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:47,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions. [2021-11-23 13:08:47,934 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 24 [2021-11-23 13:08:47,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:08:47,934 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions. [2021-11-23 13:08:47,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.357142857142857) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:47,935 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions. [2021-11-23 13:08:47,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 13:08:47,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:47,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:08:47,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-23 13:08:48,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:08:48,146 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:08:48,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:48,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1259005594, now seen corresponding path program 1 times [2021-11-23 13:08:48,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:08:48,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714415415] [2021-11-23 13:08:48,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:48,147 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:08:48,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:08:48,148 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:08:48,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-23 13:08:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:48,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 13:08:48,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:08:48,378 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 13:08:48,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:08:48,466 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 13:08:48,467 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 20 treesize of output 19 [2021-11-23 13:08:48,494 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 13:08:48,494 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:08:48,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714415415] [2021-11-23 13:08:48,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714415415] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:48,495 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:48,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:08:48,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387726208] [2021-11-23 13:08:48,495 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:48,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:08:48,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:08:48,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:08:48,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:08:48,497 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:48,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:08:48,728 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2021-11-23 13:08:48,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:08:48,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-23 13:08:48,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:08:48,730 INFO L225 Difference]: With dead ends: 96 [2021-11-23 13:08:48,730 INFO L226 Difference]: Without dead ends: 96 [2021-11-23 13:08:48,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:08:48,731 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 103 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:08:48,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 94 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:08:48,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-23 13:08:48,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 85. [2021-11-23 13:08:48,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 73 states have (on average 1.3013698630136987) internal successors, (95), 84 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:48,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2021-11-23 13:08:48,737 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 28 [2021-11-23 13:08:48,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:08:48,737 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2021-11-23 13:08:48,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:48,738 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2021-11-23 13:08:48,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 13:08:48,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:48,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:08:48,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-23 13:08:48,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:08:48,949 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:08:48,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:48,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1259005593, now seen corresponding path program 1 times [2021-11-23 13:08:48,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:08:48,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517783463] [2021-11-23 13:08:48,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:48,950 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:08:48,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:08:48,951 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:08:48,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-23 13:08:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:49,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-23 13:08:49,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:08:49,289 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 13:08:49,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:08:49,465 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:08:49,465 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 28 [2021-11-23 13:08:49,981 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 13:08:49,981 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:08:49,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517783463] [2021-11-23 13:08:49,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517783463] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:49,982 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:49,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-23 13:08:49,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924118840] [2021-11-23 13:08:49,982 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:49,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 13:08:49,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:08:49,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 13:08:49,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-23 13:08:49,984 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 14 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 13:08:50,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:08:50,467 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2021-11-23 13:08:50,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 13:08:50,468 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 14 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-23 13:08:50,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:08:50,469 INFO L225 Difference]: With dead ends: 84 [2021-11-23 13:08:50,469 INFO L226 Difference]: Without dead ends: 84 [2021-11-23 13:08:50,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-11-23 13:08:50,470 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 314 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:08:50,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 120 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:08:50,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-23 13:08:50,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-11-23 13:08:50,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 73 states have (on average 1.273972602739726) internal successors, (93), 83 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:50,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2021-11-23 13:08:50,474 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 28 [2021-11-23 13:08:50,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:08:50,474 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2021-11-23 13:08:50,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 14 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 13:08:50,475 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2021-11-23 13:08:50,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-23 13:08:50,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:50,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:08:50,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-23 13:08:50,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:08:50,676 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:08:50,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:50,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1994956730, now seen corresponding path program 1 times [2021-11-23 13:08:50,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:08:50,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960131961] [2021-11-23 13:08:50,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:50,677 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:08:50,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:08:50,678 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:08:50,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-23 13:08:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:50,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-23 13:08:50,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:08:50,978 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 13 treesize of output 9 [2021-11-23 13:08:50,985 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 13 treesize of output 9 [2021-11-23 13:08:51,104 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 29 treesize of output 21 [2021-11-23 13:08:51,108 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 18 treesize of output 10 [2021-11-23 13:08:51,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:08:51,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:08:51,432 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 38 treesize of output 32 [2021-11-23 13:08:51,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:51,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:51,689 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 13:08:51,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:08:51,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960131961] [2021-11-23 13:08:51,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960131961] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:51,689 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:51,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 10] imperfect sequences [] total 16 [2021-11-23 13:08:51,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317985745] [2021-11-23 13:08:51,690 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:51,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 13:08:51,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:08:51,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 13:08:51,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-23 13:08:51,691 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 13:08:52,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:08:52,864 INFO L93 Difference]: Finished difference Result 134 states and 144 transitions. [2021-11-23 13:08:52,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 13:08:52,864 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-23 13:08:52,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:08:52,866 INFO L225 Difference]: With dead ends: 134 [2021-11-23 13:08:52,866 INFO L226 Difference]: Without dead ends: 134 [2021-11-23 13:08:52,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2021-11-23 13:08:52,867 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 389 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:08:52,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 406 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 13:08:52,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-23 13:08:52,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 90. [2021-11-23 13:08:52,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 79 states have (on average 1.2531645569620253) internal successors, (99), 89 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:52,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2021-11-23 13:08:52,871 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 33 [2021-11-23 13:08:52,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:08:52,872 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2021-11-23 13:08:52,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 13:08:52,872 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2021-11-23 13:08:52,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 13:08:52,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:52,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:08:52,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-23 13:08:53,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:08:53,074 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:08:53,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:53,074 INFO L85 PathProgramCache]: Analyzing trace with hash -356680967, now seen corresponding path program 1 times [2021-11-23 13:08:53,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:08:53,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444010620] [2021-11-23 13:08:53,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:53,075 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:08:53,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:08:53,076 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:08:53,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-23 13:08:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:53,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-23 13:08:53,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:08:53,503 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 13 treesize of output 9 [2021-11-23 13:08:53,603 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 15 treesize of output 7 [2021-11-23 13:08:53,689 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 13:08:53,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:08:53,803 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 38 treesize of output 32 [2021-11-23 13:08:54,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:08:54,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:08:54,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444010620] [2021-11-23 13:08:54,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444010620] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:54,085 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:54,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 11] imperfect sequences [] total 19 [2021-11-23 13:08:54,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599281870] [2021-11-23 13:08:54,086 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:54,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 13:08:54,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:08:54,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 13:08:54,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-11-23 13:08:54,088 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:54,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:08:54,932 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2021-11-23 13:08:54,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 13:08:54,933 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-23 13:08:54,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:08:54,933 INFO L225 Difference]: With dead ends: 89 [2021-11-23 13:08:54,933 INFO L226 Difference]: Without dead ends: 89 [2021-11-23 13:08:54,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=217, Invalid=595, Unknown=0, NotChecked=0, Total=812 [2021-11-23 13:08:54,935 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 440 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:08:54,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 205 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 13:08:54,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-11-23 13:08:54,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-11-23 13:08:54,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 79 states have (on average 1.2278481012658229) internal successors, (97), 88 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:54,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2021-11-23 13:08:54,939 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 34 [2021-11-23 13:08:54,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:08:54,939 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2021-11-23 13:08:54,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:54,940 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2021-11-23 13:08:54,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 13:08:54,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:54,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:08:54,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-23 13:08:55,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:08:55,141 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:08:55,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:55,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1714124563, now seen corresponding path program 1 times [2021-11-23 13:08:55,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:08:55,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635571979] [2021-11-23 13:08:55,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:55,143 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:08:55,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:08:55,144 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:08:55,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-23 13:08:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:55,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:08:55,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:08:55,380 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 13:08:55,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:08:55,469 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 13:08:55,469 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:08:55,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635571979] [2021-11-23 13:08:55,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635571979] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:55,469 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:55,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 13:08:55,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29786757] [2021-11-23 13:08:55,470 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:55,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:08:55,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:08:55,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:08:55,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:08:55,471 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 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 13:08:55,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:08:55,517 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2021-11-23 13:08:55,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:08:55,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 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 34 [2021-11-23 13:08:55,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:08:55,518 INFO L225 Difference]: With dead ends: 88 [2021-11-23 13:08:55,518 INFO L226 Difference]: Without dead ends: 88 [2021-11-23 13:08:55,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:08:55,519 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 83 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:08:55,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 65 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:08:55,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-23 13:08:55,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-11-23 13:08:55,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 79 states have (on average 1.2025316455696202) internal successors, (95), 87 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:55,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions. [2021-11-23 13:08:55,523 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 34 [2021-11-23 13:08:55,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:08:55,523 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 95 transitions. [2021-11-23 13:08:55,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 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 13:08:55,524 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 95 transitions. [2021-11-23 13:08:55,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 13:08:55,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:55,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:08:55,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-23 13:08:55,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:08:55,739 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:08:55,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:55,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1827792044, now seen corresponding path program 1 times [2021-11-23 13:08:55,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:08:55,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160948721] [2021-11-23 13:08:55,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:55,740 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:08:55,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:08:55,741 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:08:55,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-23 13:08:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:55,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-23 13:08:55,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:08:56,606 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 17 treesize of output 13 [2021-11-23 13:08:56,869 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 15 treesize of output 7 [2021-11-23 13:08:57,282 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 13:08:57,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:08:57,726 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 38 treesize of output 32 [2021-11-23 13:08:58,178 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 13:08:58,178 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:08:58,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160948721] [2021-11-23 13:08:58,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160948721] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:58,179 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:58,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 11] imperfect sequences [] total 24 [2021-11-23 13:08:58,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303524307] [2021-11-23 13:08:58,179 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:58,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-23 13:08:58,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:08:58,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 13:08:58,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2021-11-23 13:08:58,181 INFO L87 Difference]: Start difference. First operand 88 states and 95 transitions. Second operand has 25 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 25 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:58,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:08:58,348 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2021-11-23 13:08:58,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 13:08:58,349 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 25 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-23 13:08:58,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:08:58,350 INFO L225 Difference]: With dead ends: 107 [2021-11-23 13:08:58,350 INFO L226 Difference]: Without dead ends: 107 [2021-11-23 13:08:58,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2021-11-23 13:08:58,352 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 47 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 232 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:08:58,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 662 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 232 Unchecked, 0.2s Time] [2021-11-23 13:08:58,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-23 13:08:58,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 88. [2021-11-23 13:08:58,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 79 states have (on average 1.1898734177215189) internal successors, (94), 87 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 13:08:58,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2021-11-23 13:08:58,357 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 35 [2021-11-23 13:08:58,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:08:58,357 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2021-11-23 13:08:58,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 25 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:58,358 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2021-11-23 13:08:58,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 13:08:58,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:58,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:08:58,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-23 13:08:58,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:08:58,562 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:08:58,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:58,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1598254044, now seen corresponding path program 1 times [2021-11-23 13:08:58,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:08:58,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730942875] [2021-11-23 13:08:58,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:58,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:08:58,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:08:58,565 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:08:58,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-23 13:08:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:58,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:08:58,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:08:59,245 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 13:08:59,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:08:59,380 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 13:08:59,381 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:08:59,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730942875] [2021-11-23 13:08:59,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730942875] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:59,381 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:59,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-11-23 13:08:59,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871905310] [2021-11-23 13:08:59,381 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:59,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:08:59,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:08:59,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:08:59,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:08:59,383 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand has 8 states, 7 states have (on average 10.0) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:59,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:08:59,409 INFO L93 Difference]: Finished difference Result 95 states and 101 transitions. [2021-11-23 13:08:59,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:08:59,409 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.0) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-23 13:08:59,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:08:59,410 INFO L225 Difference]: With dead ends: 95 [2021-11-23 13:08:59,410 INFO L226 Difference]: Without dead ends: 95 [2021-11-23 13:08:59,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:08:59,411 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 74 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:08:59,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 200 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 32 Unchecked, 0.0s Time] [2021-11-23 13:08:59,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-23 13:08:59,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2021-11-23 13:08:59,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 82 states have (on average 1.1829268292682926) internal successors, (97), 90 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:59,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2021-11-23 13:08:59,415 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 35 [2021-11-23 13:08:59,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:08:59,416 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 97 transitions. [2021-11-23 13:08:59,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.0) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:59,416 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2021-11-23 13:08:59,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 13:08:59,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:59,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:08:59,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-23 13:08:59,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:08:59,626 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:08:59,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:59,627 INFO L85 PathProgramCache]: Analyzing trace with hash 806723690, now seen corresponding path program 1 times [2021-11-23 13:08:59,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:08:59,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429499514] [2021-11-23 13:08:59,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:59,627 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:08:59,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:08:59,628 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:08:59,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-23 13:08:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:08:59,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:08:59,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:08:59,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:08:59,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:08:59,868 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 13:08:59,868 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:08:59,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429499514] [2021-11-23 13:08:59,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429499514] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:08:59,869 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:08:59,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:08:59,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826370849] [2021-11-23 13:08:59,869 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:08:59,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:08:59,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:08:59,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:08:59,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:08:59,870 INFO L87 Difference]: Start difference. First operand 91 states and 97 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:59,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:08:59,922 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2021-11-23 13:08:59,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:08:59,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-23 13:08:59,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:08:59,924 INFO L225 Difference]: With dead ends: 85 [2021-11-23 13:08:59,924 INFO L226 Difference]: Without dead ends: 85 [2021-11-23 13:08:59,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:08:59,925 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 55 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:08:59,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 157 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:08:59,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-23 13:08:59,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 73. [2021-11-23 13:08:59,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 72 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:59,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2021-11-23 13:08:59,929 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 35 [2021-11-23 13:08:59,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:08:59,929 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2021-11-23 13:08:59,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:59,930 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2021-11-23 13:08:59,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 13:08:59,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:59,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:08:59,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-23 13:09:00,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:09:00,142 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:09:00,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:00,142 INFO L85 PathProgramCache]: Analyzing trace with hash 826978651, now seen corresponding path program 1 times [2021-11-23 13:09:00,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:09:00,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713428737] [2021-11-23 13:09:00,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:00,146 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:09:00,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:09:00,147 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:09:00,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-23 13:09:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:00,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-23 13:09:00,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:09:00,381 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 13:09:00,571 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 27 treesize of output 23 [2021-11-23 13:09:00,675 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 25 treesize of output 17 [2021-11-23 13:09:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:00,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:09:00,972 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 68 treesize of output 62 [2021-11-23 13:09:01,409 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 13:09:01,409 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:09:01,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713428737] [2021-11-23 13:09:01,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713428737] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:01,409 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:01,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 11] imperfect sequences [] total 19 [2021-11-23 13:09:01,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118837222] [2021-11-23 13:09:01,410 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:01,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 13:09:01,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:09:01,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 13:09:01,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-11-23 13:09:01,411 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:02,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:02,711 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2021-11-23 13:09:02,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 13:09:02,711 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-23 13:09:02,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:02,712 INFO L225 Difference]: With dead ends: 78 [2021-11-23 13:09:02,712 INFO L226 Difference]: Without dead ends: 78 [2021-11-23 13:09:02,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2021-11-23 13:09:02,714 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 261 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:02,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 267 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 314 Invalid, 0 Unknown, 108 Unchecked, 0.6s Time] [2021-11-23 13:09:02,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-23 13:09:02,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2021-11-23 13:09:02,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 71 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:02,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2021-11-23 13:09:02,717 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 36 [2021-11-23 13:09:02,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:02,718 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2021-11-23 13:09:02,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:02,718 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2021-11-23 13:09:02,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 13:09:02,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:02,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:09:02,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-23 13:09:02,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:09:02,919 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:09:02,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:02,919 INFO L85 PathProgramCache]: Analyzing trace with hash 827224923, now seen corresponding path program 1 times [2021-11-23 13:09:02,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:09:02,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878561981] [2021-11-23 13:09:02,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:02,920 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:09:02,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:09:02,921 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:09:02,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-23 13:09:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:03,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-23 13:09:03,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:09:03,316 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 18 treesize of output 14 [2021-11-23 13:09:03,427 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 16 treesize of output 8 [2021-11-23 13:09:03,553 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 13:09:03,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:09:03,707 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 40 treesize of output 34 [2021-11-23 13:09:04,061 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 13:09:04,061 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:09:04,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878561981] [2021-11-23 13:09:04,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878561981] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:04,062 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:04,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 12] imperfect sequences [] total 20 [2021-11-23 13:09:04,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17842047] [2021-11-23 13:09:04,062 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:04,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 13:09:04,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:09:04,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 13:09:04,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-11-23 13:09:04,064 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:05,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:05,245 INFO L93 Difference]: Finished difference Result 84 states and 83 transitions. [2021-11-23 13:09:05,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 13:09:05,250 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-23 13:09:05,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:05,251 INFO L225 Difference]: With dead ends: 84 [2021-11-23 13:09:05,251 INFO L226 Difference]: Without dead ends: 84 [2021-11-23 13:09:05,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2021-11-23 13:09:05,252 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 384 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:05,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 486 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 13:09:05,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-23 13:09:05,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 72. [2021-11-23 13:09:05,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 65 states have (on average 1.123076923076923) internal successors, (73), 71 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:05,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2021-11-23 13:09:05,256 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 36 [2021-11-23 13:09:05,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:05,256 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2021-11-23 13:09:05,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:05,256 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2021-11-23 13:09:05,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 13:09:05,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:05,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:09:05,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2021-11-23 13:09:05,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:09:05,472 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:09:05,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:05,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1993732043, now seen corresponding path program 1 times [2021-11-23 13:09:05,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:09:05,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578334947] [2021-11-23 13:09:05,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:05,474 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:09:05,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:09:05,475 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:09:05,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-23 13:09:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:05,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:09:05,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:09:05,638 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 13:09:05,755 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 13:09:05,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:09:05,875 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 13:09:05,875 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:09:05,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578334947] [2021-11-23 13:09:05,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578334947] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:05,876 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:05,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 13:09:05,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460307307] [2021-11-23 13:09:05,876 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:05,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:09:05,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:09:05,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:09:05,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:09:05,877 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 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 13:09:06,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:06,004 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2021-11-23 13:09:06,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:09:06,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-23 13:09:06,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:06,006 INFO L225 Difference]: With dead ends: 72 [2021-11-23 13:09:06,006 INFO L226 Difference]: Without dead ends: 72 [2021-11-23 13:09:06,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 66 SyntacticMatches, 2 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 13:09:06,006 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 35 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:06,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 79 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:09:06,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-23 13:09:06,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-11-23 13:09:06,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 71 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:06,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2021-11-23 13:09:06,010 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 36 [2021-11-23 13:09:06,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:06,010 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2021-11-23 13:09:06,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 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 13:09:06,010 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2021-11-23 13:09:06,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-23 13:09:06,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:06,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:09:06,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-11-23 13:09:06,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:09:06,211 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:09:06,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:06,212 INFO L85 PathProgramCache]: Analyzing trace with hash -421074569, now seen corresponding path program 1 times [2021-11-23 13:09:06,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:09:06,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371864014] [2021-11-23 13:09:06,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:06,213 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:09:06,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:09:06,214 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:09:06,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-23 13:09:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:06,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:09:06,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:09:06,905 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 13:09:06,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:09:07,078 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 13:09:07,079 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:09:07,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371864014] [2021-11-23 13:09:07,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371864014] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:07,079 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:07,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-11-23 13:09:07,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263651313] [2021-11-23 13:09:07,080 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:07,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:09:07,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:09:07,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:09:07,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:09:07,081 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:07,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:07,099 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2021-11-23 13:09:07,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:09:07,100 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-23 13:09:07,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:07,101 INFO L225 Difference]: With dead ends: 73 [2021-11-23 13:09:07,101 INFO L226 Difference]: Without dead ends: 73 [2021-11-23 13:09:07,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:09:07,102 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 61 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:07,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 136 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 22 Unchecked, 0.0s Time] [2021-11-23 13:09:07,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-23 13:09:07,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-11-23 13:09:07,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 66 states have (on average 1.106060606060606) internal successors, (73), 72 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:07,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2021-11-23 13:09:07,105 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 38 [2021-11-23 13:09:07,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:07,106 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2021-11-23 13:09:07,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:07,106 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2021-11-23 13:09:07,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-23 13:09:07,107 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:07,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:09:07,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2021-11-23 13:09:07,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:09:07,327 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:09:07,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:07,327 INFO L85 PathProgramCache]: Analyzing trace with hash 588720178, now seen corresponding path program 1 times [2021-11-23 13:09:07,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:09:07,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755673700] [2021-11-23 13:09:07,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:07,328 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:09:07,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:09:07,329 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:09:07,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-11-23 13:09:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:07,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:09:07,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:09:08,030 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 13:09:08,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:09:08,196 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 13:09:08,196 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:09:08,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755673700] [2021-11-23 13:09:08,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755673700] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:08,197 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:08,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-11-23 13:09:08,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326199583] [2021-11-23 13:09:08,197 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:08,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:09:08,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:09:08,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:09:08,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:09:08,199 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:08,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:08,222 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2021-11-23 13:09:08,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:09:08,223 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-23 13:09:08,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:08,223 INFO L225 Difference]: With dead ends: 72 [2021-11-23 13:09:08,223 INFO L226 Difference]: Without dead ends: 72 [2021-11-23 13:09:08,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:09:08,224 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 69 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:08,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 151 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 24 Unchecked, 0.0s Time] [2021-11-23 13:09:08,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-23 13:09:08,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-11-23 13:09:08,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 71 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:08,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2021-11-23 13:09:08,228 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 39 [2021-11-23 13:09:08,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:08,228 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2021-11-23 13:09:08,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:08,229 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2021-11-23 13:09:08,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-23 13:09:08,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:08,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:09:08,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-11-23 13:09:08,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:09:08,443 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:09:08,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:08,443 INFO L85 PathProgramCache]: Analyzing trace with hash -168409599, now seen corresponding path program 1 times [2021-11-23 13:09:08,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:09:08,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173464989] [2021-11-23 13:09:08,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:08,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:09:08,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:09:08,445 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:09:08,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-11-23 13:09:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:08,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 13:09:08,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:09:08,585 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 13:09:08,625 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:09:08,625 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 19 treesize of output 19 [2021-11-23 13:09:08,839 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 13:09:08,839 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 19 treesize of output 24 [2021-11-23 13:09:08,884 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 13:09:08,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:09:09,070 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 9 treesize of output 7 [2021-11-23 13:09:09,116 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 13:09:09,116 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:09:09,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173464989] [2021-11-23 13:09:09,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173464989] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:09,117 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:09,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 7 [2021-11-23 13:09:09,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441782269] [2021-11-23 13:09:09,117 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:09,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:09:09,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:09:09,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:09:09,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:09:09,119 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:09,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:09,455 INFO L93 Difference]: Finished difference Result 80 states and 79 transitions. [2021-11-23 13:09:09,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:09:09,456 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-23 13:09:09,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:09,457 INFO L225 Difference]: With dead ends: 80 [2021-11-23 13:09:09,457 INFO L226 Difference]: Without dead ends: 80 [2021-11-23 13:09:09,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 66 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-23 13:09:09,458 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 139 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:09,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 151 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 116 Invalid, 0 Unknown, 19 Unchecked, 0.2s Time] [2021-11-23 13:09:09,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-23 13:09:09,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2021-11-23 13:09:09,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 67 states have (on average 1.0895522388059702) internal successors, (73), 72 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:09,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2021-11-23 13:09:09,460 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 39 [2021-11-23 13:09:09,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:09,461 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2021-11-23 13:09:09,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:09,461 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2021-11-23 13:09:09,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-23 13:09:09,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:09,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:09:09,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-11-23 13:09:09,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:09:09,662 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:09:09,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:09,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1070456479, now seen corresponding path program 1 times [2021-11-23 13:09:09,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:09:09,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180763076] [2021-11-23 13:09:09,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:09,663 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:09:09,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:09:09,664 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:09:09,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-11-23 13:09:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:09,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-23 13:09:09,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:09:09,911 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 13:09:10,125 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 13:09:10,125 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 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-23 13:09:10,416 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 31 treesize of output 27 [2021-11-23 13:09:10,589 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 33 treesize of output 21 [2021-11-23 13:09:10,840 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-11-23 13:09:10,840 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 2 case distinctions, treesize of input 44 treesize of output 47 [2021-11-23 13:09:10,929 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 13:09:10,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:09:23,305 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 68 treesize of output 62 [2021-11-23 13:09:30,076 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 13:09:30,076 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:09:30,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180763076] [2021-11-23 13:09:30,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180763076] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:30,077 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:30,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16, 13] imperfect sequences [] total 28 [2021-11-23 13:09:30,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143303869] [2021-11-23 13:09:30,077 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:30,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-23 13:09:30,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:09:30,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-23 13:09:30,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=695, Unknown=9, NotChecked=0, Total=812 [2021-11-23 13:09:30,079 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand has 29 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 29 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:36,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:36,797 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2021-11-23 13:09:36,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-23 13:09:36,798 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 29 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-23 13:09:36,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:36,799 INFO L225 Difference]: With dead ends: 72 [2021-11-23 13:09:36,799 INFO L226 Difference]: Without dead ends: 72 [2021-11-23 13:09:36,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=439, Invalid=1532, Unknown=9, NotChecked=0, Total=1980 [2021-11-23 13:09:36,801 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 283 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:36,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 361 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 506 Invalid, 0 Unknown, 90 Unchecked, 1.0s Time] [2021-11-23 13:09:36,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-23 13:09:36,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-11-23 13:09:36,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 71 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:36,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2021-11-23 13:09:36,804 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 40 [2021-11-23 13:09:36,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:36,805 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2021-11-23 13:09:36,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 29 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:36,805 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2021-11-23 13:09:36,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-23 13:09:36,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:36,806 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:09:36,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-11-23 13:09:37,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:09:37,018 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:09:37,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:37,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1175587371, now seen corresponding path program 1 times [2021-11-23 13:09:37,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:09:37,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186746865] [2021-11-23 13:09:37,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:37,020 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:09:37,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:09:37,021 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:09:37,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-11-23 13:09:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:37,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:09:37,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:09:37,249 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 13:09:37,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:09:37,370 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 13:09:37,370 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:09:37,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186746865] [2021-11-23 13:09:37,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186746865] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:37,371 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:37,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 13:09:37,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583313417] [2021-11-23 13:09:37,371 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:37,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:09:37,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:09:37,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:09:37,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:09:37,373 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 13:09:37,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:37,417 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2021-11-23 13:09:37,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:09:37,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-23 13:09:37,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:37,419 INFO L225 Difference]: With dead ends: 71 [2021-11-23 13:09:37,419 INFO L226 Difference]: Without dead ends: 71 [2021-11-23 13:09:37,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:09:37,420 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 66 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:37,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 55 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:09:37,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-23 13:09:37,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-11-23 13:09:37,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 67 states have (on average 1.0597014925373134) internal successors, (71), 70 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:37,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2021-11-23 13:09:37,422 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 41 [2021-11-23 13:09:37,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:37,423 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2021-11-23 13:09:37,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 13:09:37,423 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2021-11-23 13:09:37,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 13:09:37,423 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:37,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:09:37,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-11-23 13:09:37,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:09:37,624 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:09:37,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:37,625 INFO L85 PathProgramCache]: Analyzing trace with hash -2083469983, now seen corresponding path program 1 times [2021-11-23 13:09:37,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:09:37,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1731404533] [2021-11-23 13:09:37,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:37,625 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:09:37,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:09:37,626 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:09:37,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-11-23 13:09:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:37,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:09:37,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:09:38,348 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 13:09:38,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:09:38,518 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 13:09:38,519 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:09:38,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1731404533] [2021-11-23 13:09:38,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1731404533] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:38,519 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:38,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-11-23 13:09:38,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128750858] [2021-11-23 13:09:38,520 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:38,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:09:38,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:09:38,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:09:38,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:09:38,521 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand has 8 states, 7 states have (on average 12.0) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:38,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:38,544 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2021-11-23 13:09:38,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:09:38,545 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-23 13:09:38,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:38,546 INFO L225 Difference]: With dead ends: 70 [2021-11-23 13:09:38,546 INFO L226 Difference]: Without dead ends: 70 [2021-11-23 13:09:38,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:09:38,547 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 73 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:38,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 95 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 26 Unchecked, 0.0s Time] [2021-11-23 13:09:38,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-23 13:09:38,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-11-23 13:09:38,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 67 states have (on average 1.044776119402985) internal successors, (70), 69 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:38,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2021-11-23 13:09:38,551 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 42 [2021-11-23 13:09:38,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:38,551 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2021-11-23 13:09:38,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:38,552 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2021-11-23 13:09:38,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 13:09:38,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:38,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:09:38,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-11-23 13:09:38,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:09:38,768 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:09:38,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:38,768 INFO L85 PathProgramCache]: Analyzing trace with hash -568408100, now seen corresponding path program 1 times [2021-11-23 13:09:38,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:09:38,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867205898] [2021-11-23 13:09:38,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:38,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:09:38,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:09:38,771 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:09:38,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-11-23 13:09:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:38,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 13:09:38,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:09:38,933 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 13:09:38,981 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 13:09:38,981 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 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-23 13:09:39,162 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-23 13:09:39,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 52 [2021-11-23 13:09:40,684 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-11-23 13:09:40,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 64 treesize of output 73 [2021-11-23 13:09:41,033 INFO L354 Elim1Store]: treesize reduction 46, result has 27.0 percent of original size [2021-11-23 13:09:41,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 89 treesize of output 98 [2021-11-23 13:09:41,508 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 13:09:41,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:10:11,953 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 13:10:11,954 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:10:11,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867205898] [2021-11-23 13:10:11,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867205898] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:10:11,954 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:10:11,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 10] imperfect sequences [] total 17 [2021-11-23 13:10:11,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123503614] [2021-11-23 13:10:11,954 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:10:11,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 13:10:11,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:10:11,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 13:10:11,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=207, Unknown=10, NotChecked=0, Total=306 [2021-11-23 13:10:11,955 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand has 18 states, 17 states have (on average 4.823529411764706) internal successors, (82), 18 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:16,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:10:16,049 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2021-11-23 13:10:16,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:10:16,050 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.823529411764706) internal successors, (82), 18 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-23 13:10:16,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:10:16,051 INFO L225 Difference]: With dead ends: 73 [2021-11-23 13:10:16,051 INFO L226 Difference]: Without dead ends: 73 [2021-11-23 13:10:16,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 34.6s TimeCoverageRelationStatistics Valid=112, Invalid=256, Unknown=12, NotChecked=0, Total=380 [2021-11-23 13:10:16,052 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 63 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:10:16,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 152 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 91 Unchecked, 0.0s Time] [2021-11-23 13:10:16,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-23 13:10:16,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-11-23 13:10:16,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 70 states have (on average 1.042857142857143) internal successors, (73), 72 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:16,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2021-11-23 13:10:16,056 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 42 [2021-11-23 13:10:16,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:10:16,056 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2021-11-23 13:10:16,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.823529411764706) internal successors, (82), 18 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:16,057 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2021-11-23 13:10:16,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-23 13:10:16,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:10:16,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:10:16,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-11-23 13:10:16,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:10:16,274 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:10:16,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:10:16,274 INFO L85 PathProgramCache]: Analyzing trace with hash -163059881, now seen corresponding path program 1 times [2021-11-23 13:10:16,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:10:16,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834621324] [2021-11-23 13:10:16,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:10:16,275 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:10:16,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:10:16,276 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:10:16,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-11-23 13:10:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:10:16,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-23 13:10:16,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:10:16,462 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 13:10:16,571 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 13:10:16,571 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 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-23 13:10:17,014 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-23 13:10:17,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 59 [2021-11-23 13:10:17,581 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 35 treesize of output 31 [2021-11-23 13:10:17,985 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 41 treesize of output 25 [2021-11-23 13:10:18,682 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-11-23 13:10:18,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 75 treesize of output 84 [2021-11-23 13:10:19,305 INFO L354 Elim1Store]: treesize reduction 46, result has 27.0 percent of original size [2021-11-23 13:10:19,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 89 treesize of output 98 [2021-11-23 13:10:19,923 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 13:10:19,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:10:34,616 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 80 treesize of output 74 [2021-11-23 13:12:04,993 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 13:12:04,993 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:12:04,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834621324] [2021-11-23 13:12:04,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834621324] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:12:04,994 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:12:04,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19, 18] imperfect sequences [] total 36 [2021-11-23 13:12:04,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675800847] [2021-11-23 13:12:04,994 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:12:04,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-23 13:12:04,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:12:04,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-23 13:12:04,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1073, Unknown=19, NotChecked=0, Total=1332 [2021-11-23 13:12:04,997 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand has 37 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:05,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:12:05,207 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2021-11-23 13:12:05,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 13:12:05,207 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-23 13:12:05,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:12:05,208 INFO L225 Difference]: With dead ends: 72 [2021-11-23 13:12:05,209 INFO L226 Difference]: Without dead ends: 72 [2021-11-23 13:12:05,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 43 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 106.1s TimeCoverageRelationStatistics Valid=276, Invalid=1345, Unknown=19, NotChecked=0, Total=1640 [2021-11-23 13:12:05,210 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 42 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:12:05,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 309 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 94 Unchecked, 0.0s Time] [2021-11-23 13:12:05,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-23 13:12:05,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-11-23 13:12:05,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 71 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:05,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2021-11-23 13:12:05,214 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 43 [2021-11-23 13:12:05,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:12:05,214 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2021-11-23 13:12:05,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:05,215 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2021-11-23 13:12:05,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 13:12:05,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:12:05,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:12:05,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-11-23 13:12:05,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:12:05,431 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:12:05,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:12:05,431 INFO L85 PathProgramCache]: Analyzing trace with hash -779332321, now seen corresponding path program 1 times [2021-11-23 13:12:05,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:12:05,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879636382] [2021-11-23 13:12:05,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:12:05,432 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:12:05,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:12:05,433 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:12:05,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-11-23 13:12:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:12:05,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 13:12:05,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:12:11,012 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 13:12:11,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:12:36,885 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 13:12:36,886 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:12:36,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879636382] [2021-11-23 13:12:36,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1879636382] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:12:36,886 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:12:36,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-11-23 13:12:36,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051105750] [2021-11-23 13:12:36,887 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:12:36,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 13:12:36,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:12:36,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 13:12:36,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=354, Unknown=8, NotChecked=0, Total=420 [2021-11-23 13:12:36,889 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand has 21 states, 20 states have (on average 4.35) internal successors, (87), 21 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:41,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:12:41,866 INFO L93 Difference]: Finished difference Result 74 states and 73 transitions. [2021-11-23 13:12:41,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 13:12:41,867 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.35) internal successors, (87), 21 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-23 13:12:41,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:12:41,867 INFO L225 Difference]: With dead ends: 74 [2021-11-23 13:12:41,867 INFO L226 Difference]: Without dead ends: 50 [2021-11-23 13:12:41,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 33.8s TimeCoverageRelationStatistics Valid=94, Invalid=546, Unknown=10, NotChecked=0, Total=650 [2021-11-23 13:12:41,868 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 32 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 169 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:12:41,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 241 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 90 Invalid, 0 Unknown, 169 Unchecked, 0.3s Time] [2021-11-23 13:12:41,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-23 13:12:41,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-23 13:12:41,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 49 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 13:12:41,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 49 transitions. [2021-11-23 13:12:41,872 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 49 transitions. Word has length 44 [2021-11-23 13:12:41,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:12:41,872 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 49 transitions. [2021-11-23 13:12:41,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.35) internal successors, (87), 21 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:41,873 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 49 transitions. [2021-11-23 13:12:41,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 13:12:41,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:12:41,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:12:41,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-11-23 13:12:42,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:12:42,089 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:12:42,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:12:42,089 INFO L85 PathProgramCache]: Analyzing trace with hash -108749114, now seen corresponding path program 1 times [2021-11-23 13:12:42,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:12:42,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061422306] [2021-11-23 13:12:42,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:12:42,091 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:12:42,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:12:42,092 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:12:42,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-11-23 13:12:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:12:42,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-23 13:12:42,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:12:42,268 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 13:12:42,327 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:12:42,328 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 20 treesize of output 20 [2021-11-23 13:12:42,447 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:12:42,448 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 21 treesize of output 21 [2021-11-23 13:12:42,793 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:12:42,793 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 17 treesize of output 17 [2021-11-23 13:12:43,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-23 13:12:43,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-11-23 13:12:43,693 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 13:12:43,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 27 [2021-11-23 13:12:43,929 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-23 13:12:43,929 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 3 case distinctions, treesize of input 40 treesize of output 51 [2021-11-23 13:12:44,360 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-23 13:12:44,360 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 64 [2021-11-23 13:12:44,628 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 13:12:44,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:12:55,262 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 70 treesize of output 64 [2021-11-23 13:12:55,282 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:12:55,283 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 64 treesize of output 68 [2021-11-23 13:13:00,097 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 13:13:00,098 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 35 treesize of output 34 [2021-11-23 13:13:02,558 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 13:13:02,559 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 27 treesize of output 26 [2021-11-23 13:13:02,790 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 13:13:02,791 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:13:02,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061422306] [2021-11-23 13:13:02,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061422306] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:13:02,791 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:13:02,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22, 21] imperfect sequences [] total 38 [2021-11-23 13:13:02,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298315133] [2021-11-23 13:13:02,791 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:13:02,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-23 13:13:02,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:13:02,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-23 13:13:02,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1246, Unknown=8, NotChecked=0, Total=1482 [2021-11-23 13:13:02,793 INFO L87 Difference]: Start difference. First operand 50 states and 49 transitions. Second operand has 39 states, 38 states have (on average 2.210526315789474) internal successors, (84), 39 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:13:11,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:13:11,428 INFO L93 Difference]: Finished difference Result 49 states and 48 transitions. [2021-11-23 13:13:11,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-23 13:13:11,429 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.210526315789474) internal successors, (84), 39 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-23 13:13:11,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:13:11,429 INFO L225 Difference]: With dead ends: 49 [2021-11-23 13:13:11,430 INFO L226 Difference]: Without dead ends: 49 [2021-11-23 13:13:11,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=661, Invalid=2084, Unknown=11, NotChecked=0, Total=2756 [2021-11-23 13:13:11,431 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 248 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:13:11,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 124 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 251 Invalid, 0 Unknown, 100 Unchecked, 0.5s Time] [2021-11-23 13:13:11,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-23 13:13:11,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-11-23 13:13:11,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0) internal successors, (48), 48 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:13:11,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 48 transitions. [2021-11-23 13:13:11,434 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 48 transitions. Word has length 46 [2021-11-23 13:13:11,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:13:11,435 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 48 transitions. [2021-11-23 13:13:11,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.210526315789474) internal successors, (84), 39 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:13:11,435 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 48 transitions. [2021-11-23 13:13:11,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-23 13:13:11,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:13:11,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:13:11,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-11-23 13:13:11,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:13:11,669 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-23 13:13:11,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:13:11,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1428678263, now seen corresponding path program 1 times [2021-11-23 13:13:11,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:13:11,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127170601] [2021-11-23 13:13:11,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:13:11,670 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:13:11,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:13:11,671 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:13:11,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-11-23 13:13:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:13:11,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-23 13:13:11,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:13:13,328 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 45 treesize of output 41 [2021-11-23 13:13:14,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-11-23 13:13:28,553 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 13:13:28,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:13:30,404 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 158 treesize of output 146 [2021-11-23 13:16:44,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:16:44,237 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:16:44,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [127170601] [2021-11-23 13:16:44,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [127170601] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:16:44,238 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:16:44,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22, 22] imperfect sequences [] total 42 [2021-11-23 13:16:44,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542480842] [2021-11-23 13:16:44,238 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:16:44,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-23 13:16:44,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:16:44,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-23 13:16:44,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1609, Unknown=80, NotChecked=0, Total=1806 [2021-11-23 13:16:44,240 INFO L87 Difference]: Start difference. First operand 49 states and 48 transitions. Second operand has 43 states, 42 states have (on average 2.261904761904762) internal successors, (95), 43 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:17:05,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:17:05,306 INFO L93 Difference]: Finished difference Result 48 states and 47 transitions. [2021-11-23 13:17:05,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-23 13:17:05,306 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.261904761904762) internal successors, (95), 43 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-23 13:17:05,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:17:05,307 INFO L225 Difference]: With dead ends: 48 [2021-11-23 13:17:05,307 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 13:17:05,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 215.0s TimeCoverageRelationStatistics Valid=261, Invalid=2735, Unknown=84, NotChecked=0, Total=3080 [2021-11-23 13:17:05,308 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 119 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 341 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:17:05,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 226 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 352 Invalid, 0 Unknown, 341 Unchecked, 1.7s Time] [2021-11-23 13:17:05,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 13:17:05,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 13:17:05,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:17:05,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 13:17:05,309 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-11-23 13:17:05,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:17:05,310 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:17:05,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.261904761904762) internal successors, (95), 43 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:17:05,310 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 13:17:05,310 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 13:17:05,312 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION (28 of 29 remaining) [2021-11-23 13:17:05,312 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (27 of 29 remaining) [2021-11-23 13:17:05,313 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION (26 of 29 remaining) [2021-11-23 13:17:05,313 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION (25 of 29 remaining) [2021-11-23 13:17:05,313 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION (24 of 29 remaining) [2021-11-23 13:17:05,313 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION (23 of 29 remaining) [2021-11-23 13:17:05,313 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION (22 of 29 remaining) [2021-11-23 13:17:05,313 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION (21 of 29 remaining) [2021-11-23 13:17:05,314 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATION (20 of 29 remaining) [2021-11-23 13:17:05,314 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATION (19 of 29 remaining) [2021-11-23 13:17:05,314 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATION (18 of 29 remaining) [2021-11-23 13:17:05,314 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATION (17 of 29 remaining) [2021-11-23 13:17:05,315 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATION (16 of 29 remaining) [2021-11-23 13:17:05,315 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATION (15 of 29 remaining) [2021-11-23 13:17:05,315 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATION (14 of 29 remaining) [2021-11-23 13:17:05,315 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATION (13 of 29 remaining) [2021-11-23 13:17:05,316 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (12 of 29 remaining) [2021-11-23 13:17:05,316 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (11 of 29 remaining) [2021-11-23 13:17:05,316 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (10 of 29 remaining) [2021-11-23 13:17:05,317 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE (9 of 29 remaining) [2021-11-23 13:17:05,317 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE (8 of 29 remaining) [2021-11-23 13:17:05,317 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE (7 of 29 remaining) [2021-11-23 13:17:05,317 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE (6 of 29 remaining) [2021-11-23 13:17:05,318 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE (5 of 29 remaining) [2021-11-23 13:17:05,319 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE (4 of 29 remaining) [2021-11-23 13:17:05,319 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE (3 of 29 remaining) [2021-11-23 13:17:05,319 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE (2 of 29 remaining) [2021-11-23 13:17:05,320 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE (1 of 29 remaining) [2021-11-23 13:17:05,320 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK (0 of 29 remaining) [2021-11-23 13:17:05,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (47)] Ended with exit code 0 [2021-11-23 13:17:05,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:17:05,533 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:17:05,536 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 13:17:05,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:17:05 BoogieIcfgContainer [2021-11-23 13:17:05,540 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 13:17:05,540 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:17:05,540 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:17:05,540 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:17:05,541 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:06:47" (3/4) ... [2021-11-23 13:17:05,545 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 13:17:05,562 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2021-11-23 13:17:05,563 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-23 13:17:05,563 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 13:17:05,622 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 13:17:05,626 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:17:05,627 INFO L158 Benchmark]: Toolchain (without parser) took 620060.46ms. Allocated memory was 79.7MB in the beginning and 98.6MB in the end (delta: 18.9MB). Free memory was 44.0MB in the beginning and 60.4MB in the end (delta: -16.4MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2021-11-23 13:17:05,627 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 79.7MB. Free memory is still 61.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:17:05,627 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1107.81ms. Allocated memory is still 79.7MB. Free memory was 43.7MB in the beginning and 44.8MB in the end (delta: -1.1MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2021-11-23 13:17:05,628 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.91ms. Allocated memory is still 79.7MB. Free memory was 44.8MB in the beginning and 42.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:17:05,632 INFO L158 Benchmark]: Boogie Preprocessor took 44.28ms. Allocated memory is still 79.7MB. Free memory was 42.1MB in the beginning and 40.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:17:05,633 INFO L158 Benchmark]: RCFGBuilder took 752.37ms. Allocated memory is still 79.7MB. Free memory was 40.0MB in the beginning and 48.6MB in the end (delta: -8.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 13:17:05,633 INFO L158 Benchmark]: TraceAbstraction took 617991.79ms. Allocated memory was 79.7MB in the beginning and 98.6MB in the end (delta: 18.9MB). Free memory was 48.2MB in the beginning and 65.5MB in the end (delta: -17.3MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2021-11-23 13:17:05,633 INFO L158 Benchmark]: Witness Printer took 86.16ms. Allocated memory is still 98.6MB. Free memory was 65.5MB in the beginning and 60.4MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 13:17:05,635 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 79.7MB. Free memory is still 61.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1107.81ms. Allocated memory is still 79.7MB. Free memory was 43.7MB in the beginning and 44.8MB in the end (delta: -1.1MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.91ms. Allocated memory is still 79.7MB. Free memory was 44.8MB in the beginning and 42.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.28ms. Allocated memory is still 79.7MB. Free memory was 42.1MB in the beginning and 40.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 752.37ms. Allocated memory is still 79.7MB. Free memory was 40.0MB in the beginning and 48.6MB in the end (delta: -8.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 617991.79ms. Allocated memory was 79.7MB in the beginning and 98.6MB in the end (delta: 18.9MB). Free memory was 48.2MB in the beginning and 65.5MB in the end (delta: -17.3MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. * Witness Printer took 86.16ms. Allocated memory is still 98.6MB. Free memory was 65.5MB in the beginning and 60.4MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 807]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 807]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 811]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 811]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 784]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 784]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 785]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 785]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 788]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 788]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 623]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 623]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 623]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 623]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 619]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 619]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 798]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 798]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 798]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 814]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 814]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 814]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 816]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 816]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 816]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 818]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 818]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 818]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 822]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 83 locations, 29 error locations. Started 1 CEGAR loops. OverallTime: 617.9s, OverallIterations: 46, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 81.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8134 SdHoareTripleChecker+Valid, 15.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8134 mSDsluCounter, 12878 SdHoareTripleChecker+Invalid, 13.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 3251 IncrementalHoareTripleChecker+Unchecked, 9942 mSDsCounter, 451 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6235 IncrementalHoareTripleChecker+Invalid, 9937 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 451 mSolverCounterUnsat, 2936 mSDtfsCounter, 6235 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2531 GetRequests, 1763 SyntacticMatches, 56 SemanticMatches, 712 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 3491 ImplicationChecksByTransitivity, 542.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=11, InterpolantAutomatonStates: 482, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 46 MinimizatonAttempts, 1541 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 521.5s InterpolantComputationTime, 1201 NumberOfCodeBlocks, 1201 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 2310 ConstructedInterpolants, 430 QuantifiedInterpolants, 35535 SizeOfPredicates, 628 NumberOfNonLiveVariables, 5018 ConjunctsInSsa, 752 ConjunctsInUnsatCore, 92 InterpolantComputations, 92 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 29 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-23 13:17:05,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab00f9b-9ec8-4924-a96f-0793c1e56172/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE