./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.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_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/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_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/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_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/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 28b4a2248017400eafcc33919e1388faa83abd48459a3d9191abc0a1d3b17a56 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:52:38,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:52:38,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:52:38,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:52:38,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:52:38,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:52:38,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:52:38,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:52:38,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:52:38,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:52:38,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:52:38,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:52:38,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:52:38,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:52:38,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:52:38,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:52:38,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:52:38,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:52:38,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:52:38,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:52:38,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:52:38,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:52:38,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:52:38,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:52:38,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:52:38,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:52:38,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:52:38,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:52:38,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:52:38,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:52:38,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:52:38,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:52:38,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:52:38,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:52:38,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:52:38,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:52:38,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:52:38,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:52:38,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:52:38,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:52:38,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:52:38,612 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-23 13:52:38,661 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:52:38,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:52:38,664 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:52:38,664 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:52:38,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:52:38,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:52:38,667 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:52:38,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:52:38,668 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:52:38,668 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 13:52:38,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:52:38,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:52:38,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:52:38,671 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 13:52:38,671 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 13:52:38,671 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 13:52:38,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:52:38,672 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 13:52:38,672 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:52:38,672 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:52:38,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:52:38,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:52:38,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:52:38,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:52:38,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:52:38,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:52:38,674 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:52:38,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:52:38,675 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:52:38,677 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_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28b4a2248017400eafcc33919e1388faa83abd48459a3d9191abc0a1d3b17a56 [2021-11-23 13:52:39,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:52:39,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:52:39,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:52:39,048 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:52:39,050 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:52:39,051 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i [2021-11-23 13:52:39,143 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/data/62274c3e4/ac70640ab99142f4b0c92625ce2516a0/FLAGfb8974734 [2021-11-23 13:52:39,909 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:52:39,911 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i [2021-11-23 13:52:39,952 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/data/62274c3e4/ac70640ab99142f4b0c92625ce2516a0/FLAGfb8974734 [2021-11-23 13:52:40,062 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/data/62274c3e4/ac70640ab99142f4b0c92625ce2516a0 [2021-11-23 13:52:40,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:52:40,066 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:52:40,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:52:40,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:52:40,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:52:40,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:40" (1/1) ... [2021-11-23 13:52:40,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67cfd158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40, skipping insertion in model container [2021-11-23 13:52:40,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:40" (1/1) ... [2021-11-23 13:52:40,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:52:40,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:52:40,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:52:40,791 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 13:52:40,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@28f54678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:40, skipping insertion in model container [2021-11-23 13:52:40,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:52:40,793 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 13:52:40,795 INFO L158 Benchmark]: Toolchain (without parser) took 727.84ms. Allocated memory is still 127.9MB. Free memory was 85.0MB in the beginning and 96.3MB in the end (delta: -11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:52:40,796 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 127.9MB. Free memory is still 102.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:52:40,797 INFO L158 Benchmark]: CACSL2BoogieTranslator took 724.80ms. Allocated memory is still 127.9MB. Free memory was 84.7MB in the beginning and 96.3MB in the end (delta: -11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:52:40,798 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 127.9MB. Free memory is still 102.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 724.80ms. Allocated memory is still 127.9MB. Free memory was 84.7MB in the beginning and 96.3MB in the end (delta: -11.6MB). 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_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/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_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/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_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/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 28b4a2248017400eafcc33919e1388faa83abd48459a3d9191abc0a1d3b17a56 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:52:43,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:52:43,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:52:43,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:52:43,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:52:43,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:52:43,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:52:43,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:52:43,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:52:43,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:52:43,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:52:43,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:52:43,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:52:43,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:52:43,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:52:43,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:52:43,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:52:43,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:52:43,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:52:43,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:52:43,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:52:43,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:52:43,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:52:43,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:52:43,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:52:43,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:52:43,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:52:43,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:52:43,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:52:43,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:52:43,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:52:43,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:52:43,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:52:43,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:52:43,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:52:43,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:52:43,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:52:43,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:52:43,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:52:43,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:52:43,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:52:43,608 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-23 13:52:43,658 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:52:43,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:52:43,659 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:52:43,659 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:52:43,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:52:43,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:52:43,662 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:52:43,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:52:43,662 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:52:43,662 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 13:52:43,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:52:43,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:52:43,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:52:43,664 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 13:52:43,664 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 13:52:43,665 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 13:52:43,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:52:43,665 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 13:52:43,665 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 13:52:43,665 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 13:52:43,666 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:52:43,666 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:52:43,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:52:43,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:52:43,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:52:43,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:52:43,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:52:43,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:52:43,667 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-23 13:52:43,667 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 13:52:43,668 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:52:43,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 13:52:43,668 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_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28b4a2248017400eafcc33919e1388faa83abd48459a3d9191abc0a1d3b17a56 [2021-11-23 13:52:44,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:52:44,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:52:44,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:52:44,177 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:52:44,178 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:52:44,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i [2021-11-23 13:52:44,257 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/data/81d0f0e0e/1657b69c0b1648ef9469d01b434a3c6c/FLAGb0ff5b541 [2021-11-23 13:52:45,086 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:52:45,088 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i [2021-11-23 13:52:45,121 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/data/81d0f0e0e/1657b69c0b1648ef9469d01b434a3c6c/FLAGb0ff5b541 [2021-11-23 13:52:45,253 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/data/81d0f0e0e/1657b69c0b1648ef9469d01b434a3c6c [2021-11-23 13:52:45,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:52:45,259 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:52:45,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:52:45,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:52:45,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:52:45,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:45" (1/1) ... [2021-11-23 13:52:45,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27099c77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:45, skipping insertion in model container [2021-11-23 13:52:45,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:45" (1/1) ... [2021-11-23 13:52:45,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:52:45,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:52:45,888 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:52:45,911 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 13:52:45,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:52:46,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:52:46,075 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:52:46,167 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:52:46,243 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:52:46,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:46 WrapperNode [2021-11-23 13:52:46,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:52:46,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:52:46,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:52:46,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:52:46,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:46" (1/1) ... [2021-11-23 13:52:46,287 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:46" (1/1) ... [2021-11-23 13:52:46,336 INFO L137 Inliner]: procedures = 179, calls = 145, calls flagged for inlining = 51, calls inlined = 35, statements flattened = 487 [2021-11-23 13:52:46,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:52:46,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:52:46,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:52:46,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:52:46,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:46" (1/1) ... [2021-11-23 13:52:46,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:46" (1/1) ... [2021-11-23 13:52:46,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:46" (1/1) ... [2021-11-23 13:52:46,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:46" (1/1) ... [2021-11-23 13:52:46,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:46" (1/1) ... [2021-11-23 13:52:46,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:46" (1/1) ... [2021-11-23 13:52:46,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:46" (1/1) ... [2021-11-23 13:52:46,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:52:46,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:52:46,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:52:46,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:52:46,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:46" (1/1) ... [2021-11-23 13:52:46,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:52:46,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:52:46,495 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:52:46,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:52:46,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 13:52:46,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 13:52:46,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 13:52:46,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 13:52:46,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-23 13:52:46,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-23 13:52:46,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 13:52:46,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:52:46,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:52:46,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 13:52:46,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-23 13:52:46,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 13:52:46,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-23 13:52:46,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:52:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 13:52:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-23 13:52:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-23 13:52:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:52:46,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:52:46,816 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:52:46,819 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:52:49,152 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:52:49,161 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:52:49,162 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 13:52:49,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:49 BoogieIcfgContainer [2021-11-23 13:52:49,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:52:49,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:52:49,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:52:49,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:52:49,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:52:45" (1/3) ... [2021-11-23 13:52:49,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368c4cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:49, skipping insertion in model container [2021-11-23 13:52:49,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:46" (2/3) ... [2021-11-23 13:52:49,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368c4cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:49, skipping insertion in model container [2021-11-23 13:52:49,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:49" (3/3) ... [2021-11-23 13:52:49,174 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test12-1.i [2021-11-23 13:52:49,180 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:52:49,180 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 132 error locations. [2021-11-23 13:52:49,229 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:52:49,236 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 13:52:49,236 INFO L340 AbstractCegarLoop]: Starting to check reachability of 132 error locations. [2021-11-23 13:52:49,262 INFO L276 IsEmpty]: Start isEmpty. Operand has 330 states, 197 states have (on average 1.868020304568528) internal successors, (368), 329 states have internal predecessors, (368), 0 states have call successors, (0), 0 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 13:52:49,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 13:52:49,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:52:49,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:52:49,270 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:52:49,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:52:49,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1804980999, now seen corresponding path program 1 times [2021-11-23 13:52:49,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:52:49,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878671896] [2021-11-23 13:52:49,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:52:49,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:52:49,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:52:49,293 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:52:49,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 13:52:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:52:49,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:52:49,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:52:49,519 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 13:52:49,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:52:49,549 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 13:52:49,550 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:52:49,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878671896] [2021-11-23 13:52:49,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878671896] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:52:49,553 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:52:49,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:52:49,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579432178] [2021-11-23 13:52:49,557 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:52:49,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:52:49,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:52:49,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:52:49,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:52:49,623 INFO L87 Difference]: Start difference. First operand has 330 states, 197 states have (on average 1.868020304568528) internal successors, (368), 329 states have internal predecessors, (368), 0 states have call successors, (0), 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 13:52:50,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:52:50,130 INFO L93 Difference]: Finished difference Result 1291 states and 1417 transitions. [2021-11-23 13:52:50,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:52:50,133 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 13:52:50,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:52:50,163 INFO L225 Difference]: With dead ends: 1291 [2021-11-23 13:52:50,167 INFO L226 Difference]: Without dead ends: 1283 [2021-11-23 13:52:50,170 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 13:52:50,181 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 1383 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:52:50,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1383 Valid, 1163 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:52:50,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-11-23 13:52:50,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 330. [2021-11-23 13:52:50,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 198 states have (on average 1.8484848484848484) internal successors, (366), 329 states have internal predecessors, (366), 0 states have call successors, (0), 0 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 13:52:50,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 366 transitions. [2021-11-23 13:52:50,291 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 366 transitions. Word has length 7 [2021-11-23 13:52:50,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:52:50,291 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 366 transitions. [2021-11-23 13:52:50,292 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 13:52:50,292 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 366 transitions. [2021-11-23 13:52:50,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 13:52:50,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:52:50,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:52:50,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:52:50,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:52:50,512 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:52:50,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:52:50,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1806828041, now seen corresponding path program 1 times [2021-11-23 13:52:50,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:52:50,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322009302] [2021-11-23 13:52:50,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:52:50,515 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:52:50,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:52:50,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:52:50,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 13:52:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:52:50,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:52:50,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:52:50,697 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 13:52:50,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:52:50,728 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 13:52:50,729 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:52:50,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322009302] [2021-11-23 13:52:50,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322009302] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:52:50,730 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:52:50,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-23 13:52:50,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856166095] [2021-11-23 13:52:50,730 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:52:50,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:52:50,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:52:50,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:52:50,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:52:50,734 INFO L87 Difference]: Start difference. First operand 330 states and 366 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:52:51,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:52:51,356 INFO L93 Difference]: Finished difference Result 458 states and 499 transitions. [2021-11-23 13:52:51,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:52:51,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-23 13:52:51,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:52:51,361 INFO L225 Difference]: With dead ends: 458 [2021-11-23 13:52:51,361 INFO L226 Difference]: Without dead ends: 458 [2021-11-23 13:52:51,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:52:51,363 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 573 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:52:51,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 374 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 13:52:51,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-11-23 13:52:51,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 332. [2021-11-23 13:52:51,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 200 states have (on average 1.845) internal successors, (369), 331 states have internal predecessors, (369), 0 states have call successors, (0), 0 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 13:52:51,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 369 transitions. [2021-11-23 13:52:51,385 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 369 transitions. Word has length 7 [2021-11-23 13:52:51,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:52:51,386 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 369 transitions. [2021-11-23 13:52:51,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:52:51,387 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 369 transitions. [2021-11-23 13:52:51,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 13:52:51,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:52:51,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:52:51,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:52:51,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:52:51,600 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr110REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:52:51,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:52:51,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1806828042, now seen corresponding path program 1 times [2021-11-23 13:52:51,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:52:51,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999231447] [2021-11-23 13:52:51,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:52:51,606 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:52:51,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:52:51,608 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:52:51,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 13:52:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:52:51,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:52:51,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:52:51,837 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 13:52:51,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:52:51,992 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 13:52:51,992 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:52:51,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999231447] [2021-11-23 13:52:51,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999231447] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:52:51,993 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:52:51,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-23 13:52:51,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089156635] [2021-11-23 13:52:51,993 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:52:51,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:52:51,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:52:51,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:52:51,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:52:51,995 INFO L87 Difference]: Start difference. First operand 332 states and 369 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:52:53,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:52:53,039 INFO L93 Difference]: Finished difference Result 437 states and 482 transitions. [2021-11-23 13:52:53,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:52:53,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-23 13:52:53,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:52:53,043 INFO L225 Difference]: With dead ends: 437 [2021-11-23 13:52:53,043 INFO L226 Difference]: Without dead ends: 437 [2021-11-23 13:52:53,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:52:53,045 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 266 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:52:53,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 643 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 13:52:53,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-11-23 13:52:53,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 364. [2021-11-23 13:52:53,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 232 states have (on average 1.8405172413793103) internal successors, (427), 363 states have internal predecessors, (427), 0 states have call successors, (0), 0 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 13:52:53,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 427 transitions. [2021-11-23 13:52:53,059 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 427 transitions. Word has length 7 [2021-11-23 13:52:53,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:52:53,059 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 427 transitions. [2021-11-23 13:52:53,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:52:53,060 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 427 transitions. [2021-11-23 13:52:53,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 13:52:53,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:52:53,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:52:53,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:52:53,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:52:53,274 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr106ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:52:53,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:52:53,275 INFO L85 PathProgramCache]: Analyzing trace with hash -592189532, now seen corresponding path program 1 times [2021-11-23 13:52:53,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:52:53,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429956686] [2021-11-23 13:52:53,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:52:53,276 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:52:53,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:52:53,277 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:52:53,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 13:52:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:52:53,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:52:53,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:52:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:52:53,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:52:53,424 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 13:52:53,424 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:52:53,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429956686] [2021-11-23 13:52:53,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429956686] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:52:53,425 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:52:53,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:52:53,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200622083] [2021-11-23 13:52:53,425 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:52:53,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:52:53,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:52:53,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:52:53,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:52:53,427 INFO L87 Difference]: Start difference. First operand 364 states and 427 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 13:52:53,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:52:53,595 INFO L93 Difference]: Finished difference Result 1304 states and 1453 transitions. [2021-11-23 13:52:53,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:52:53,595 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 13:52:53,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:52:53,603 INFO L225 Difference]: With dead ends: 1304 [2021-11-23 13:52:53,603 INFO L226 Difference]: Without dead ends: 1304 [2021-11-23 13:52:53,603 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 13:52:53,605 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 1357 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:52:53,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1357 Valid, 1191 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:52:53,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-11-23 13:52:53,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 366. [2021-11-23 13:52:53,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 234 states have (on average 1.8333333333333333) internal successors, (429), 365 states have internal predecessors, (429), 0 states have call successors, (0), 0 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 13:52:53,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 429 transitions. [2021-11-23 13:52:53,621 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 429 transitions. Word has length 9 [2021-11-23 13:52:53,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:52:53,622 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 429 transitions. [2021-11-23 13:52:53,622 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 13:52:53,622 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 429 transitions. [2021-11-23 13:52:53,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 13:52:53,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:52:53,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:52:53,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:52:53,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:52:53,834 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:52:53,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:52:53,835 INFO L85 PathProgramCache]: Analyzing trace with hash -592189907, now seen corresponding path program 1 times [2021-11-23 13:52:53,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:52:53,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011566695] [2021-11-23 13:52:53,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:52:53,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:52:53,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:52:53,840 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:52:53,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 13:52:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:52:53,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:52:53,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:52:53,970 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 13:52:54,032 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 13:52:54,033 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 26 treesize of output 33 [2021-11-23 13:52:54,160 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 13:52:54,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:00,283 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 13:53:00,284 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:00,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011566695] [2021-11-23 13:53:00,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011566695] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:00,285 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:00,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 13:53:00,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553657037] [2021-11-23 13:53:00,286 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:00,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:53:00,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:00,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:53:00,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=24, Unknown=3, NotChecked=0, Total=42 [2021-11-23 13:53:00,287 INFO L87 Difference]: Start difference. First operand 366 states and 429 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 13:53:01,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:01,178 INFO L93 Difference]: Finished difference Result 566 states and 651 transitions. [2021-11-23 13:53:01,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:53:01,179 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 13:53:01,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:01,184 INFO L225 Difference]: With dead ends: 566 [2021-11-23 13:53:01,185 INFO L226 Difference]: Without dead ends: 566 [2021-11-23 13:53:01,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=29, Invalid=40, Unknown=3, NotChecked=0, Total=72 [2021-11-23 13:53:01,186 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 209 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 408 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:01,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 1095 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 248 Invalid, 0 Unknown, 408 Unchecked, 0.8s Time] [2021-11-23 13:53:01,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-11-23 13:53:01,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 369. [2021-11-23 13:53:01,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 237 states have (on average 1.8270042194092826) internal successors, (433), 368 states have internal predecessors, (433), 0 states have call successors, (0), 0 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 13:53:01,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 433 transitions. [2021-11-23 13:53:01,212 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 433 transitions. Word has length 9 [2021-11-23 13:53:01,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:01,213 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 433 transitions. [2021-11-23 13:53:01,213 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 13:53:01,213 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 433 transitions. [2021-11-23 13:53:01,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 13:53:01,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:01,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:01,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:01,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:01,427 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:53:01,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:01,428 INFO L85 PathProgramCache]: Analyzing trace with hash -592189906, now seen corresponding path program 1 times [2021-11-23 13:53:01,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:01,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142475782] [2021-11-23 13:53:01,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:01,429 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:01,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:01,431 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:01,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 13:53:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:01,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 13:53:01,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:01,557 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 13:53:01,564 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 13:53:01,674 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 13:53:01,675 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 13:53:01,689 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:53:01,690 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 13:53:01,735 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 13:53:01,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:02,232 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 13:53:02,273 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 13:53:02,273 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:02,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142475782] [2021-11-23 13:53:02,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142475782] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:02,274 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:02,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-23 13:53:02,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626428241] [2021-11-23 13:53:02,274 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:02,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:53:02,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:02,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:53:02,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:53:02,276 INFO L87 Difference]: Start difference. First operand 369 states and 433 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 13:53:03,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:03,668 INFO L93 Difference]: Finished difference Result 627 states and 716 transitions. [2021-11-23 13:53:03,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:53:03,669 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 13:53:03,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:03,674 INFO L225 Difference]: With dead ends: 627 [2021-11-23 13:53:03,674 INFO L226 Difference]: Without dead ends: 627 [2021-11-23 13:53:03,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:53:03,676 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 449 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 649 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:03,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 1827 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 344 Invalid, 0 Unknown, 649 Unchecked, 1.2s Time] [2021-11-23 13:53:03,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-11-23 13:53:03,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 388. [2021-11-23 13:53:03,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 256 states have (on average 1.796875) internal successors, (460), 387 states have internal predecessors, (460), 0 states have call successors, (0), 0 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 13:53:03,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 460 transitions. [2021-11-23 13:53:03,691 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 460 transitions. Word has length 9 [2021-11-23 13:53:03,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:03,692 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 460 transitions. [2021-11-23 13:53:03,692 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 13:53:03,692 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 460 transitions. [2021-11-23 13:53:03,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 13:53:03,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:03,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:03,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:03,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:03,902 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr111REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:53:03,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:03,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1194974090, now seen corresponding path program 1 times [2021-11-23 13:53:03,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:03,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534783367] [2021-11-23 13:53:03,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:03,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:03,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:03,907 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:03,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 13:53:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:03,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 13:53:03,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:04,117 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 13:53:04,150 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 13:53:04,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:04,227 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 13:53:04,227 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:04,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534783367] [2021-11-23 13:53:04,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534783367] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:04,228 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:04,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-23 13:53:04,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445644824] [2021-11-23 13:53:04,229 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:04,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:53:04,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:04,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:53:04,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:53:04,231 INFO L87 Difference]: Start difference. First operand 388 states and 460 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 13:53:07,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:07,661 INFO L93 Difference]: Finished difference Result 462 states and 536 transitions. [2021-11-23 13:53:07,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:53:07,661 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 9 [2021-11-23 13:53:07,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:07,665 INFO L225 Difference]: With dead ends: 462 [2021-11-23 13:53:07,665 INFO L226 Difference]: Without dead ends: 462 [2021-11-23 13:53:07,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:53:07,666 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 128 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:07,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 1415 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-23 13:53:07,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-11-23 13:53:07,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 390. [2021-11-23 13:53:07,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 258 states have (on average 1.7945736434108528) internal successors, (463), 389 states have internal predecessors, (463), 0 states have call successors, (0), 0 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 13:53:07,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 463 transitions. [2021-11-23 13:53:07,684 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 463 transitions. Word has length 9 [2021-11-23 13:53:07,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:07,685 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 463 transitions. [2021-11-23 13:53:07,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 13:53:07,685 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 463 transitions. [2021-11-23 13:53:07,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 13:53:07,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:07,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:07,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:07,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:07,901 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr112REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:53:07,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:07,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1194974091, now seen corresponding path program 1 times [2021-11-23 13:53:07,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:07,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060182048] [2021-11-23 13:53:07,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:07,905 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:07,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:07,906 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:07,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 13:53:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:08,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 13:53:08,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:08,183 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 13:53:08,193 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 13:53:08,252 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 13:53:08,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:08,555 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 13:53:08,555 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:08,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060182048] [2021-11-23 13:53:08,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060182048] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:08,556 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:08,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-23 13:53:08,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471460715] [2021-11-23 13:53:08,556 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:08,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:53:08,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:08,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:53:08,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:53:08,557 INFO L87 Difference]: Start difference. First operand 390 states and 463 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 13:53:11,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:11,825 INFO L93 Difference]: Finished difference Result 448 states and 518 transitions. [2021-11-23 13:53:11,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:53:11,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 9 [2021-11-23 13:53:11,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:11,829 INFO L225 Difference]: With dead ends: 448 [2021-11-23 13:53:11,830 INFO L226 Difference]: Without dead ends: 448 [2021-11-23 13:53:11,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:53:11,831 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 97 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:11,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 1399 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-23 13:53:11,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-11-23 13:53:11,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 399. [2021-11-23 13:53:11,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 267 states have (on average 1.7827715355805243) internal successors, (476), 398 states have internal predecessors, (476), 0 states have call successors, (0), 0 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 13:53:11,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 476 transitions. [2021-11-23 13:53:11,845 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 476 transitions. Word has length 9 [2021-11-23 13:53:11,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:11,845 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 476 transitions. [2021-11-23 13:53:11,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 13:53:11,846 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 476 transitions. [2021-11-23 13:53:11,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 13:53:11,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:11,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:11,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:12,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:12,061 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:53:12,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:12,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1182817455, now seen corresponding path program 1 times [2021-11-23 13:53:12,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:12,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327679574] [2021-11-23 13:53:12,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:12,062 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:12,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:12,063 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:12,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 13:53:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:12,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:53:12,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:12,202 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 13:53:12,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:12,232 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 13:53:12,233 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:12,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327679574] [2021-11-23 13:53:12,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1327679574] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:12,233 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:12,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:53:12,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155517906] [2021-11-23 13:53:12,234 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:12,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:53:12,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:12,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:53:12,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:53:12,235 INFO L87 Difference]: Start difference. First operand 399 states and 476 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 13:53:12,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:12,469 INFO L93 Difference]: Finished difference Result 669 states and 738 transitions. [2021-11-23 13:53:12,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:53:12,470 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 13:53:12,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:12,475 INFO L225 Difference]: With dead ends: 669 [2021-11-23 13:53:12,475 INFO L226 Difference]: Without dead ends: 669 [2021-11-23 13:53:12,475 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 13:53:12,476 INFO L933 BasicCegarLoop]: 638 mSDtfsCounter, 356 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:12,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 1575 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:53:12,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2021-11-23 13:53:12,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 355. [2021-11-23 13:53:12,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 225 states have (on average 1.7733333333333334) internal successors, (399), 354 states have internal predecessors, (399), 0 states have call successors, (0), 0 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 13:53:12,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 399 transitions. [2021-11-23 13:53:12,491 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 399 transitions. Word has length 9 [2021-11-23 13:53:12,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:12,492 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 399 transitions. [2021-11-23 13:53:12,492 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 13:53:12,492 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 399 transitions. [2021-11-23 13:53:12,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 13:53:12,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:12,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:12,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:12,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:12,707 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:53:12,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:12,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1176158768, now seen corresponding path program 1 times [2021-11-23 13:53:12,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:12,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857785314] [2021-11-23 13:53:12,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:12,708 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:12,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:12,709 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:12,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 13:53:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:12,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:53:12,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:12,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:12,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:12,974 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 13:53:12,975 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:12,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857785314] [2021-11-23 13:53:12,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857785314] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:12,975 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:12,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-23 13:53:12,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924864770] [2021-11-23 13:53:12,975 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:12,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:53:12,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:12,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:53:12,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:53:12,976 INFO L87 Difference]: Start difference. First operand 355 states and 399 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 13:53:13,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:13,429 INFO L93 Difference]: Finished difference Result 667 states and 735 transitions. [2021-11-23 13:53:13,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:53:13,430 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 13:53:13,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:13,433 INFO L225 Difference]: With dead ends: 667 [2021-11-23 13:53:13,433 INFO L226 Difference]: Without dead ends: 667 [2021-11-23 13:53:13,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:53:13,434 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 1605 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:13,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1605 Valid, 680 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 13:53:13,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-11-23 13:53:13,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 354. [2021-11-23 13:53:13,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 225 states have (on average 1.7644444444444445) internal successors, (397), 353 states have internal predecessors, (397), 0 states have call successors, (0), 0 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 13:53:13,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 397 transitions. [2021-11-23 13:53:13,456 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 397 transitions. Word has length 10 [2021-11-23 13:53:13,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:13,456 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 397 transitions. [2021-11-23 13:53:13,456 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 13:53:13,457 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 397 transitions. [2021-11-23 13:53:13,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 13:53:13,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:13,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:13,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:13,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:13,674 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:53:13,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:13,675 INFO L85 PathProgramCache]: Analyzing trace with hash -602160153, now seen corresponding path program 1 times [2021-11-23 13:53:13,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:13,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373120027] [2021-11-23 13:53:13,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:13,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:13,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:13,676 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:13,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 13:53:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:13,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 13:53:13,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:13,826 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 13:53:13,827 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 20 treesize of output 27 [2021-11-23 13:53:14,028 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-11-23 13:53:14,029 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 30 treesize of output 33 [2021-11-23 13:53:14,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:14,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:14,214 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 13:53:14,214 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:14,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373120027] [2021-11-23 13:53:14,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373120027] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:14,215 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:14,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-11-23 13:53:14,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112696998] [2021-11-23 13:53:14,215 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:14,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 13:53:14,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:14,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 13:53:14,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:53:14,217 INFO L87 Difference]: Start difference. First operand 354 states and 397 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:29,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:29,719 INFO L93 Difference]: Finished difference Result 664 states and 732 transitions. [2021-11-23 13:53:29,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:53:29,720 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 13:53:29,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:29,725 INFO L225 Difference]: With dead ends: 664 [2021-11-23 13:53:29,725 INFO L226 Difference]: Without dead ends: 664 [2021-11-23 13:53:29,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=68, Invalid=109, Unknown=5, NotChecked=0, Total=182 [2021-11-23 13:53:29,726 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 1199 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1199 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 234 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:29,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1199 Valid, 1049 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 572 Invalid, 0 Unknown, 234 Unchecked, 1.3s Time] [2021-11-23 13:53:29,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-11-23 13:53:29,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 354. [2021-11-23 13:53:29,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 227 states have (on average 1.7533039647577093) internal successors, (398), 353 states have internal predecessors, (398), 0 states have call successors, (0), 0 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 13:53:29,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 398 transitions. [2021-11-23 13:53:29,739 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 398 transitions. Word has length 13 [2021-11-23 13:53:29,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:29,740 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 398 transitions. [2021-11-23 13:53:29,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:29,740 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 398 transitions. [2021-11-23 13:53:29,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 13:53:29,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:29,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:29,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:29,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:29,954 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr110REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:53:29,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:29,954 INFO L85 PathProgramCache]: Analyzing trace with hash -602160152, now seen corresponding path program 1 times [2021-11-23 13:53:29,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:29,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940133600] [2021-11-23 13:53:29,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:29,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:29,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:29,956 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:29,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 13:53:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:30,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 13:53:30,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:30,133 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 13:53:30,133 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 29 treesize of output 31 [2021-11-23 13:53:30,256 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 13:53:30,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:32,636 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 13:53:32,637 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:32,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940133600] [2021-11-23 13:53:32,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940133600] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:32,637 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:32,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-11-23 13:53:32,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700705943] [2021-11-23 13:53:32,637 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:32,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:53:32,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:32,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:53:32,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-23 13:53:32,638 INFO L87 Difference]: Start difference. First operand 354 states and 398 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:33,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:33,848 INFO L93 Difference]: Finished difference Result 469 states and 512 transitions. [2021-11-23 13:53:33,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:53:33,849 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 13:53:33,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:33,852 INFO L225 Difference]: With dead ends: 469 [2021-11-23 13:53:33,852 INFO L226 Difference]: Without dead ends: 469 [2021-11-23 13:53:33,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-23 13:53:33,853 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 275 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 235 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:33,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 1023 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 297 Invalid, 0 Unknown, 235 Unchecked, 1.2s Time] [2021-11-23 13:53:33,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-11-23 13:53:33,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 368. [2021-11-23 13:53:33,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 241 states have (on average 1.7551867219917012) internal successors, (423), 367 states have internal predecessors, (423), 0 states have call successors, (0), 0 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 13:53:33,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 423 transitions. [2021-11-23 13:53:33,865 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 423 transitions. Word has length 13 [2021-11-23 13:53:33,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:33,866 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 423 transitions. [2021-11-23 13:53:33,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:33,866 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 423 transitions. [2021-11-23 13:53:33,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 13:53:33,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:33,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:33,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:34,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:34,080 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr103ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:53:34,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:34,080 INFO L85 PathProgramCache]: Analyzing trace with hash -493393864, now seen corresponding path program 1 times [2021-11-23 13:53:34,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:34,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841684005] [2021-11-23 13:53:34,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:34,081 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:34,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:34,082 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:34,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 13:53:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:34,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:53:34,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:34,222 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 13:53:34,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:34,255 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 13:53:34,255 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:34,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1841684005] [2021-11-23 13:53:34,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1841684005] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:34,256 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:34,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:53:34,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723858993] [2021-11-23 13:53:34,256 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:34,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:53:34,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:34,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:53:34,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:53:34,258 INFO L87 Difference]: Start difference. First operand 368 states and 423 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 13:53:34,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:34,412 INFO L93 Difference]: Finished difference Result 1280 states and 1417 transitions. [2021-11-23 13:53:34,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:53:34,412 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 13:53:34,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:34,419 INFO L225 Difference]: With dead ends: 1280 [2021-11-23 13:53:34,419 INFO L226 Difference]: Without dead ends: 1280 [2021-11-23 13:53:34,420 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 13:53:34,421 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 1320 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:34,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1320 Valid, 1200 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:53:34,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2021-11-23 13:53:34,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 370. [2021-11-23 13:53:34,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 243 states have (on average 1.7489711934156378) internal successors, (425), 369 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:34,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 425 transitions. [2021-11-23 13:53:34,439 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 425 transitions. Word has length 14 [2021-11-23 13:53:34,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:34,440 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 425 transitions. [2021-11-23 13:53:34,440 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 13:53:34,440 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 425 transitions. [2021-11-23 13:53:34,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 13:53:34,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:34,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:34,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:34,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:34,655 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:53:34,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:34,655 INFO L85 PathProgramCache]: Analyzing trace with hash -493394216, now seen corresponding path program 1 times [2021-11-23 13:53:34,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:34,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296164186] [2021-11-23 13:53:34,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:34,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:34,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:34,657 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:34,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 13:53:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:34,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:53:34,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:34,764 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 13:53:34,826 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 13:53:34,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2021-11-23 13:53:34,858 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 13:53:34,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:34,926 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 13:53:34,926 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:34,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296164186] [2021-11-23 13:53:34,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296164186] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:34,927 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:34,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 13:53:34,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483080318] [2021-11-23 13:53:34,927 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:34,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:53:34,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:34,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:53:34,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:53:34,928 INFO L87 Difference]: Start difference. First operand 370 states and 425 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 13:53:35,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:35,879 INFO L93 Difference]: Finished difference Result 602 states and 679 transitions. [2021-11-23 13:53:35,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:53:35,880 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 13:53:35,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:35,887 INFO L225 Difference]: With dead ends: 602 [2021-11-23 13:53:35,887 INFO L226 Difference]: Without dead ends: 602 [2021-11-23 13:53:35,888 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 13:53:35,893 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 593 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:35,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [593 Valid, 573 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 13:53:35,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-11-23 13:53:35,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 376. [2021-11-23 13:53:35,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 249 states have (on average 1.7429718875502007) internal successors, (434), 375 states have internal predecessors, (434), 0 states have call successors, (0), 0 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 13:53:35,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 434 transitions. [2021-11-23 13:53:35,907 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 434 transitions. Word has length 14 [2021-11-23 13:53:35,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:35,908 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 434 transitions. [2021-11-23 13:53:35,908 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 13:53:35,908 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 434 transitions. [2021-11-23 13:53:35,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 13:53:35,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:35,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:35,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:36,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:36,126 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:53:36,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:36,126 INFO L85 PathProgramCache]: Analyzing trace with hash -493394215, now seen corresponding path program 1 times [2021-11-23 13:53:36,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:36,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463376107] [2021-11-23 13:53:36,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:36,127 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:36,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:36,128 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:36,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 13:53:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:36,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 13:53:36,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:36,237 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 13:53:36,366 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 13:53:36,367 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 13:53:36,405 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 13:53:36,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:37,093 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 13:53:37,093 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:37,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463376107] [2021-11-23 13:53:37,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463376107] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:37,094 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:37,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 10 [2021-11-23 13:53:37,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710011100] [2021-11-23 13:53:37,094 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:37,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 13:53:37,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:37,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 13:53:37,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:53:37,096 INFO L87 Difference]: Start difference. First operand 376 states and 434 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 13:53:39,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:39,311 INFO L93 Difference]: Finished difference Result 960 states and 1046 transitions. [2021-11-23 13:53:39,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:53:39,312 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 13:53:39,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:39,317 INFO L225 Difference]: With dead ends: 960 [2021-11-23 13:53:39,317 INFO L226 Difference]: Without dead ends: 960 [2021-11-23 13:53:39,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:53:39,318 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 1119 mSDsluCounter, 2388 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 2809 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 550 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:39,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1119 Valid, 2809 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 547 Invalid, 0 Unknown, 550 Unchecked, 2.0s Time] [2021-11-23 13:53:39,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2021-11-23 13:53:39,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 392. [2021-11-23 13:53:39,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 265 states have (on average 1.7320754716981133) internal successors, (459), 391 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:39,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 459 transitions. [2021-11-23 13:53:39,352 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 459 transitions. Word has length 14 [2021-11-23 13:53:39,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:39,352 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 459 transitions. [2021-11-23 13:53:39,353 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 13:53:39,353 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 459 transitions. [2021-11-23 13:53:39,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 13:53:39,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:39,354 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:39,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:39,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:39,580 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:53:39,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:39,581 INFO L85 PathProgramCache]: Analyzing trace with hash 186664154, now seen corresponding path program 1 times [2021-11-23 13:53:39,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:39,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442344170] [2021-11-23 13:53:39,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:39,582 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:39,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:39,584 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:39,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 13:53:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:39,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:53:39,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:39,729 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 13:53:39,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:39,764 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 13:53:39,764 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:39,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442344170] [2021-11-23 13:53:39,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1442344170] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:39,764 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:39,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:53:39,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409800524] [2021-11-23 13:53:39,765 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:39,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:53:39,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:39,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:53:39,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:53:39,766 INFO L87 Difference]: Start difference. First operand 392 states and 459 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 13:53:39,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:39,905 INFO L93 Difference]: Finished difference Result 705 states and 778 transitions. [2021-11-23 13:53:39,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:53:39,905 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 13:53:39,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:39,909 INFO L225 Difference]: With dead ends: 705 [2021-11-23 13:53:39,909 INFO L226 Difference]: Without dead ends: 705 [2021-11-23 13:53:39,910 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 13:53:39,910 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 428 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:39,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 1555 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:53:39,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2021-11-23 13:53:39,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 348. [2021-11-23 13:53:39,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 223 states have (on average 1.7443946188340806) internal successors, (389), 347 states have internal predecessors, (389), 0 states have call successors, (0), 0 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 13:53:39,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 389 transitions. [2021-11-23 13:53:39,923 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 389 transitions. Word has length 14 [2021-11-23 13:53:39,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:39,924 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 389 transitions. [2021-11-23 13:53:39,924 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 13:53:39,924 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 389 transitions. [2021-11-23 13:53:39,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 13:53:39,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:39,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:39,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-23 13:53:40,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:40,138 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr131ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:53:40,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:40,139 INFO L85 PathProgramCache]: Analyzing trace with hash 248517516, now seen corresponding path program 1 times [2021-11-23 13:53:40,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:40,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715232699] [2021-11-23 13:53:40,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:40,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:40,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:40,141 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:40,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 13:53:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:40,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:53:40,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:40,284 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 13:53:40,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:40,319 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 13:53:40,319 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:40,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715232699] [2021-11-23 13:53:40,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715232699] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:40,320 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:40,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 13:53:40,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569956557] [2021-11-23 13:53:40,320 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:40,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:53:40,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:40,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:53:40,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:53:40,321 INFO L87 Difference]: Start difference. First operand 348 states and 389 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:40,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:40,675 INFO L93 Difference]: Finished difference Result 351 states and 391 transitions. [2021-11-23 13:53:40,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:53:40,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 13:53:40,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:40,677 INFO L225 Difference]: With dead ends: 351 [2021-11-23 13:53:40,677 INFO L226 Difference]: Without dead ends: 340 [2021-11-23 13:53:40,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 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 13:53:40,679 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 0 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:40,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 575 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:53:40,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-23 13:53:40,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2021-11-23 13:53:40,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 215 states have (on average 1.7674418604651163) internal successors, (380), 339 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 13:53:40,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 380 transitions. [2021-11-23 13:53:40,688 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 380 transitions. Word has length 14 [2021-11-23 13:53:40,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:40,688 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 380 transitions. [2021-11-23 13:53:40,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:40,689 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 380 transitions. [2021-11-23 13:53:40,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 13:53:40,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:40,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:40,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:40,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:40,903 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr104ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:53:40,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:40,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1886506933, now seen corresponding path program 1 times [2021-11-23 13:53:40,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:40,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026402591] [2021-11-23 13:53:40,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:40,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:40,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:40,905 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:40,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-23 13:53:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:40,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:53:40,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:41,336 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 13:53:41,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:41,424 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 13:53:41,424 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:41,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026402591] [2021-11-23 13:53:41,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026402591] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:41,425 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:41,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-11-23 13:53:41,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679370861] [2021-11-23 13:53:41,425 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:41,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:53:41,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:41,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:53:41,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:53:41,426 INFO L87 Difference]: Start difference. First operand 340 states and 380 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 13:53:42,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:42,001 INFO L93 Difference]: Finished difference Result 1051 states and 1168 transitions. [2021-11-23 13:53:42,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 13:53:42,002 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 13:53:42,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:42,008 INFO L225 Difference]: With dead ends: 1051 [2021-11-23 13:53:42,008 INFO L226 Difference]: Without dead ends: 1051 [2021-11-23 13:53:42,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:53:42,009 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 895 mSDsluCounter, 2165 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 190 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:42,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [895 Valid, 2788 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 176 Invalid, 0 Unknown, 190 Unchecked, 0.5s Time] [2021-11-23 13:53:42,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2021-11-23 13:53:42,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 498. [2021-11-23 13:53:42,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 373 states have (on average 1.7962466487935658) internal successors, (670), 497 states have internal predecessors, (670), 0 states have call successors, (0), 0 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 13:53:42,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 670 transitions. [2021-11-23 13:53:42,028 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 670 transitions. Word has length 15 [2021-11-23 13:53:42,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:42,028 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 670 transitions. [2021-11-23 13:53:42,028 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 13:53:42,029 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 670 transitions. [2021-11-23 13:53:42,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 13:53:42,029 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:42,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:42,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:42,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:42,242 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr111REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:53:42,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:42,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1144692200, now seen corresponding path program 1 times [2021-11-23 13:53:42,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:42,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325496466] [2021-11-23 13:53:42,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:42,244 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:42,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:42,245 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:42,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-23 13:53:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:42,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:53:42,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:42,401 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 23 treesize of output 15 [2021-11-23 13:53:42,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:42,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:42,459 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-23 13:53:42,459 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 21 [2021-11-23 13:53:42,513 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 13:53:42,513 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:42,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325496466] [2021-11-23 13:53:42,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325496466] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:42,513 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:42,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 13:53:42,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746933084] [2021-11-23 13:53:42,514 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:42,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:53:42,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:42,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:53:42,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:53:42,515 INFO L87 Difference]: Start difference. First operand 498 states and 670 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:43,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:43,980 INFO L93 Difference]: Finished difference Result 549 states and 722 transitions. [2021-11-23 13:53:43,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:53:43,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 13:53:43,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:43,984 INFO L225 Difference]: With dead ends: 549 [2021-11-23 13:53:43,984 INFO L226 Difference]: Without dead ends: 549 [2021-11-23 13:53:43,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:53:43,986 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 69 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:43,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1042 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 13:53:43,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-11-23 13:53:44,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 500. [2021-11-23 13:53:44,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 375 states have (on average 1.7946666666666666) internal successors, (673), 499 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:44,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 673 transitions. [2021-11-23 13:53:44,011 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 673 transitions. Word has length 15 [2021-11-23 13:53:44,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:44,012 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 673 transitions. [2021-11-23 13:53:44,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:44,012 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 673 transitions. [2021-11-23 13:53:44,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 13:53:44,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:44,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:44,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:44,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:44,227 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr112REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:53:44,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:44,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1144692201, now seen corresponding path program 1 times [2021-11-23 13:53:44,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:44,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505686640] [2021-11-23 13:53:44,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:44,228 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:44,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:44,230 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:44,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-23 13:53:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:44,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:53:44,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:44,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2021-11-23 13:53:44,508 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 23 treesize of output 15 [2021-11-23 13:53:44,565 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 13:53:44,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:44,744 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:53:44,745 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 38 treesize of output 42 [2021-11-23 13:53:45,285 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 13:53:45,285 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:45,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505686640] [2021-11-23 13:53:45,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505686640] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:45,286 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:45,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-23 13:53:45,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756753524] [2021-11-23 13:53:45,286 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:45,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:53:45,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:45,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:53:45,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:53:45,287 INFO L87 Difference]: Start difference. First operand 500 states and 673 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 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 13:53:48,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:48,200 INFO L93 Difference]: Finished difference Result 577 states and 751 transitions. [2021-11-23 13:53:48,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:53:48,202 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 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 13:53:48,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:48,204 INFO L225 Difference]: With dead ends: 577 [2021-11-23 13:53:48,205 INFO L226 Difference]: Without dead ends: 577 [2021-11-23 13:53:48,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:53:48,206 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 155 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:48,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 1372 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-23 13:53:48,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-11-23 13:53:48,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 500. [2021-11-23 13:53:48,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 375 states have (on average 1.792) internal successors, (672), 499 states have internal predecessors, (672), 0 states have call successors, (0), 0 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 13:53:48,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 672 transitions. [2021-11-23 13:53:48,237 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 672 transitions. Word has length 15 [2021-11-23 13:53:48,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:48,237 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 672 transitions. [2021-11-23 13:53:48,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 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 13:53:48,238 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 672 transitions. [2021-11-23 13:53:48,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 13:53:48,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:48,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:48,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:48,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:48,451 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr106ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:53:48,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:48,451 INFO L85 PathProgramCache]: Analyzing trace with hash 456979480, now seen corresponding path program 1 times [2021-11-23 13:53:48,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:48,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468561018] [2021-11-23 13:53:48,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:48,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:48,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:48,453 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:48,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-23 13:53:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:48,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:53:48,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:48,583 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 13:53:48,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:48,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:53:48,631 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:48,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468561018] [2021-11-23 13:53:48,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468561018] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:48,631 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:48,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 13:53:48,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162989907] [2021-11-23 13:53:48,632 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:48,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:53:48,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:48,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:53:48,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:53:48,633 INFO L87 Difference]: Start difference. First operand 500 states and 672 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:48,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:48,742 INFO L93 Difference]: Finished difference Result 499 states and 671 transitions. [2021-11-23 13:53:48,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:53:48,742 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-23 13:53:48,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:48,746 INFO L225 Difference]: With dead ends: 499 [2021-11-23 13:53:48,746 INFO L226 Difference]: Without dead ends: 499 [2021-11-23 13:53:48,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 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 13:53:48,747 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 668 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:48,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [668 Valid, 340 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:53:48,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-11-23 13:53:48,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2021-11-23 13:53:48,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 375 states have (on average 1.7893333333333334) internal successors, (671), 498 states have internal predecessors, (671), 0 states have call successors, (0), 0 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 13:53:48,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 671 transitions. [2021-11-23 13:53:48,761 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 671 transitions. Word has length 17 [2021-11-23 13:53:48,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:48,762 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 671 transitions. [2021-11-23 13:53:48,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:48,762 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 671 transitions. [2021-11-23 13:53:48,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 13:53:48,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:48,763 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 13:53:48,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:48,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:48,981 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr113REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:53:48,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:48,982 INFO L85 PathProgramCache]: Analyzing trace with hash -514552933, now seen corresponding path program 1 times [2021-11-23 13:53:48,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:48,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958295800] [2021-11-23 13:53:48,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:48,982 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:48,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:48,984 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:49,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-23 13:53:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:49,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:53:49,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:49,355 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 13:53:49,363 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 13:53:49,465 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 13:53:49,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:49,704 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 13:53:49,704 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:49,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958295800] [2021-11-23 13:53:49,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958295800] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:49,705 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:49,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-23 13:53:49,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263020357] [2021-11-23 13:53:49,705 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:49,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:53:49,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:49,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:53:49,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:53:49,707 INFO L87 Difference]: Start difference. First operand 499 states and 671 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:50,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:50,818 INFO L93 Difference]: Finished difference Result 505 states and 676 transitions. [2021-11-23 13:53:50,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:53:50,820 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-23 13:53:50,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:50,823 INFO L225 Difference]: With dead ends: 505 [2021-11-23 13:53:50,823 INFO L226 Difference]: Without dead ends: 505 [2021-11-23 13:53:50,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:53:50,824 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 29 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:50,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 1664 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 13:53:50,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-11-23 13:53:50,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 501. [2021-11-23 13:53:50,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 377 states have (on average 1.7851458885941645) internal successors, (673), 500 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:50,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 673 transitions. [2021-11-23 13:53:50,838 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 673 transitions. Word has length 18 [2021-11-23 13:53:50,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:50,838 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 673 transitions. [2021-11-23 13:53:50,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:50,839 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 673 transitions. [2021-11-23 13:53:50,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 13:53:50,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:50,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:50,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-23 13:53:51,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:51,052 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr100ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:53:51,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:51,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1550215578, now seen corresponding path program 1 times [2021-11-23 13:53:51,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:51,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910755419] [2021-11-23 13:53:51,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:51,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:51,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:51,054 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:51,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-23 13:53:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:51,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:53:51,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:51,197 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 13:53:51,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:53:51,232 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 13:53:51,233 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:53:51,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910755419] [2021-11-23 13:53:51,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910755419] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:51,233 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:51,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:53:51,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337223566] [2021-11-23 13:53:51,234 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:51,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:53:51,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:53:51,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:53:51,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:53:51,235 INFO L87 Difference]: Start difference. First operand 501 states and 673 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:51,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:51,375 INFO L93 Difference]: Finished difference Result 1561 states and 1955 transitions. [2021-11-23 13:53:51,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:53:51,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-23 13:53:51,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:51,383 INFO L225 Difference]: With dead ends: 1561 [2021-11-23 13:53:51,383 INFO L226 Difference]: Without dead ends: 1561 [2021-11-23 13:53:51,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 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 13:53:51,384 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 1293 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:51,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1293 Valid, 1196 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:53:51,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2021-11-23 13:53:51,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 503. [2021-11-23 13:53:51,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 379 states have (on average 1.7810026385224274) internal successors, (675), 502 states have internal predecessors, (675), 0 states have call successors, (0), 0 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 13:53:51,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 675 transitions. [2021-11-23 13:53:51,404 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 675 transitions. Word has length 19 [2021-11-23 13:53:51,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:51,404 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 675 transitions. [2021-11-23 13:53:51,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:51,405 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 675 transitions. [2021-11-23 13:53:51,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 13:53:51,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:51,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:51,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-11-23 13:53:51,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:53:51,619 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:53:51,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:51,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1550215906, now seen corresponding path program 1 times [2021-11-23 13:53:51,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:53:51,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622349432] [2021-11-23 13:53:51,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:51,620 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:53:51,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:53:51,621 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:53:51,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-23 13:53:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:51,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-23 13:53:51,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:53:51,769 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 13:53:51,780 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 13:53:51,895 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 13:53:51,895 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 13:53:51,932 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 13:53:51,932 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 26 treesize of output 33 [2021-11-23 13:53:52,209 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-23 13:53:52,209 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 42 treesize of output 59 [2021-11-23 13:53:52,268 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 13:53:52,729 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 13:53:52,730 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 82 treesize of output 84 [2021-11-23 13:53:52,766 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-23 13:53:52,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 80 [2021-11-23 13:53:52,803 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 13:53:52,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:54:08,936 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 13:54:08,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 138 treesize of output 132 [2021-11-23 13:54:09,012 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 13:54:09,012 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:54:09,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622349432] [2021-11-23 13:54:09,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622349432] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:54:09,012 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:54:09,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 16 [2021-11-23 13:54:09,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687148089] [2021-11-23 13:54:09,013 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:54:09,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 13:54:09,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:54:09,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 13:54:09,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=187, Unknown=5, NotChecked=0, Total=272 [2021-11-23 13:54:09,015 INFO L87 Difference]: Start difference. First operand 503 states and 675 transitions. Second operand has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:54:12,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:54:12,391 INFO L93 Difference]: Finished difference Result 506 states and 678 transitions. [2021-11-23 13:54:12,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:54:12,392 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-23 13:54:12,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:54:12,395 INFO L225 Difference]: With dead ends: 506 [2021-11-23 13:54:12,395 INFO L226 Difference]: Without dead ends: 506 [2021-11-23 13:54:12,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=113, Invalid=262, Unknown=5, NotChecked=0, Total=380 [2021-11-23 13:54:12,396 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 28 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 408 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:54:12,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 1741 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 427 Invalid, 0 Unknown, 408 Unchecked, 1.1s Time] [2021-11-23 13:54:12,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-11-23 13:54:12,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2021-11-23 13:54:12,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 382 states have (on average 1.774869109947644) internal successors, (678), 505 states have internal predecessors, (678), 0 states have call successors, (0), 0 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 13:54:12,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 678 transitions. [2021-11-23 13:54:12,409 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 678 transitions. Word has length 19 [2021-11-23 13:54:12,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:54:12,410 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 678 transitions. [2021-11-23 13:54:12,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:54:12,410 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 678 transitions. [2021-11-23 13:54:12,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 13:54:12,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:54:12,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:54:12,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:12,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:54:12,629 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr100ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:54:12,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:12,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1550155996, now seen corresponding path program 1 times [2021-11-23 13:54:12,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:54:12,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318854669] [2021-11-23 13:54:12,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:12,630 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:54:12,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:54:12,631 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:54:12,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-23 13:54:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:12,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:54:12,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:12,797 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 13:54:12,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:54:12,843 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 13:54:12,844 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:54:12,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318854669] [2021-11-23 13:54:12,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318854669] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:54:12,844 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:54:12,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 13:54:12,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830332698] [2021-11-23 13:54:12,845 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:54:12,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:54:12,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:54:12,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:54:12,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:54:12,846 INFO L87 Difference]: Start difference. First operand 506 states and 678 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:54:12,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:54:12,937 INFO L93 Difference]: Finished difference Result 509 states and 677 transitions. [2021-11-23 13:54:12,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:54:12,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-23 13:54:12,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:54:12,942 INFO L225 Difference]: With dead ends: 509 [2021-11-23 13:54:12,942 INFO L226 Difference]: Without dead ends: 509 [2021-11-23 13:54:12,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 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 13:54:12,943 INFO L933 BasicCegarLoop]: 353 mSDtfsCounter, 661 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:54:12,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 377 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:54:12,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2021-11-23 13:54:12,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 505. [2021-11-23 13:54:12,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 382 states have (on average 1.7643979057591623) internal successors, (674), 504 states have internal predecessors, (674), 0 states have call successors, (0), 0 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 13:54:12,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 674 transitions. [2021-11-23 13:54:12,957 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 674 transitions. Word has length 19 [2021-11-23 13:54:12,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:54:12,957 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 674 transitions. [2021-11-23 13:54:12,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:54:12,958 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 674 transitions. [2021-11-23 13:54:12,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 13:54:12,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:54:12,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:54:12,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:13,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:54:13,173 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:54:13,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:13,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1550156324, now seen corresponding path program 1 times [2021-11-23 13:54:13,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:54:13,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631979486] [2021-11-23 13:54:13,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:13,174 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:54:13,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:54:13,175 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:54:13,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-23 13:54:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:13,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:54:13,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:13,315 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 13:54:13,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:54:13,357 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 13:54:13,357 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:54:13,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631979486] [2021-11-23 13:54:13,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631979486] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:54:13,358 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:54:13,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:54:13,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858205585] [2021-11-23 13:54:13,358 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:54:13,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:54:13,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:54:13,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:54:13,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:54:13,361 INFO L87 Difference]: Start difference. First operand 505 states and 674 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:54:13,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:54:13,497 INFO L93 Difference]: Finished difference Result 723 states and 793 transitions. [2021-11-23 13:54:13,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:54:13,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-23 13:54:13,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:54:13,501 INFO L225 Difference]: With dead ends: 723 [2021-11-23 13:54:13,502 INFO L226 Difference]: Without dead ends: 723 [2021-11-23 13:54:13,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 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 13:54:13,502 INFO L933 BasicCegarLoop]: 662 mSDtfsCounter, 397 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:54:13,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 1575 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:54:13,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-11-23 13:54:13,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 357. [2021-11-23 13:54:13,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 234 states have (on average 1.6965811965811965) internal successors, (397), 356 states have internal predecessors, (397), 0 states have call successors, (0), 0 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 13:54:13,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 397 transitions. [2021-11-23 13:54:13,513 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 397 transitions. Word has length 19 [2021-11-23 13:54:13,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:54:13,514 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 397 transitions. [2021-11-23 13:54:13,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:54:13,514 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 397 transitions. [2021-11-23 13:54:13,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 13:54:13,515 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:54:13,515 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:54:13,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:13,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:54:13,729 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr108ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:54:13,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:13,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1070632026, now seen corresponding path program 1 times [2021-11-23 13:54:13,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:54:13,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097135730] [2021-11-23 13:54:13,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:13,730 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:54:13,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:54:13,731 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:54:13,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-23 13:54:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:13,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 13:54:13,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:13,817 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 13:54:13,861 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 13:54:13,862 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 13:54:14,025 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-11-23 13:54:14,025 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 32 treesize of output 35 [2021-11-23 13:54:14,086 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 13:54:14,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:54:16,247 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 13:54:16,247 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:54:16,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097135730] [2021-11-23 13:54:16,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097135730] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:54:16,248 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:54:16,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-23 13:54:16,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120988810] [2021-11-23 13:54:16,248 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:54:16,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:54:16,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:54:16,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:54:16,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=63, Unknown=1, NotChecked=0, Total=90 [2021-11-23 13:54:16,250 INFO L87 Difference]: Start difference. First operand 357 states and 397 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 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 13:54:23,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:54:23,725 INFO L93 Difference]: Finished difference Result 667 states and 735 transitions. [2021-11-23 13:54:23,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:54:23,726 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 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 19 [2021-11-23 13:54:23,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:54:23,729 INFO L225 Difference]: With dead ends: 667 [2021-11-23 13:54:23,729 INFO L226 Difference]: Without dead ends: 667 [2021-11-23 13:54:23,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=52, Invalid=128, Unknown=2, NotChecked=0, Total=182 [2021-11-23 13:54:23,730 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 1174 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 244 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:54:23,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1174 Valid, 1018 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 602 Invalid, 0 Unknown, 244 Unchecked, 1.3s Time] [2021-11-23 13:54:23,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-11-23 13:54:23,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 360. [2021-11-23 13:54:23,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 237 states have (on average 1.6877637130801688) internal successors, (400), 359 states have internal predecessors, (400), 0 states have call successors, (0), 0 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 13:54:23,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 400 transitions. [2021-11-23 13:54:23,754 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 400 transitions. Word has length 19 [2021-11-23 13:54:23,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:54:23,755 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 400 transitions. [2021-11-23 13:54:23,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 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 13:54:23,755 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 400 transitions. [2021-11-23 13:54:23,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 13:54:23,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:54:23,757 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:54:23,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:23,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:54:23,963 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:54:23,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:23,964 INFO L85 PathProgramCache]: Analyzing trace with hash -870157536, now seen corresponding path program 1 times [2021-11-23 13:54:23,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:54:23,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146324932] [2021-11-23 13:54:23,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:23,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:54:23,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:54:23,966 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:54:23,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-23 13:54:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:24,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:54:24,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:24,140 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 13:54:24,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:54:24,177 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 13:54:24,177 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:54:24,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146324932] [2021-11-23 13:54:24,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146324932] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:54:24,177 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:54:24,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:54:24,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709614012] [2021-11-23 13:54:24,178 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:54:24,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:54:24,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:54:24,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:54:24,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:54:24,179 INFO L87 Difference]: Start difference. First operand 360 states and 400 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:54:24,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:54:24,290 INFO L93 Difference]: Finished difference Result 698 states and 764 transitions. [2021-11-23 13:54:24,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:54:24,291 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-23 13:54:24,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:54:24,294 INFO L225 Difference]: With dead ends: 698 [2021-11-23 13:54:24,294 INFO L226 Difference]: Without dead ends: 698 [2021-11-23 13:54:24,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 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 13:54:24,295 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 426 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:54:24,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 1519 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:54:24,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2021-11-23 13:54:24,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 346. [2021-11-23 13:54:24,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 224 states have (on average 1.7053571428571428) internal successors, (382), 345 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:54:24,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 382 transitions. [2021-11-23 13:54:24,304 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 382 transitions. Word has length 19 [2021-11-23 13:54:24,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:54:24,305 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 382 transitions. [2021-11-23 13:54:24,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:54:24,305 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 382 transitions. [2021-11-23 13:54:24,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 13:54:24,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:54:24,306 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] [2021-11-23 13:54:24,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:24,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:54:24,514 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr101ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:54:24,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:24,514 INFO L85 PathProgramCache]: Analyzing trace with hash -810195136, now seen corresponding path program 1 times [2021-11-23 13:54:24,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:54:24,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329797165] [2021-11-23 13:54:24,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:24,515 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:54:24,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:54:24,516 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:54:24,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-23 13:54:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:24,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:54:24,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:24,885 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 13:54:24,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:54:24,961 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 13:54:24,961 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:54:24,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329797165] [2021-11-23 13:54:24,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329797165] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:54:24,962 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:54:24,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-11-23 13:54:24,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499468468] [2021-11-23 13:54:24,963 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:54:24,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:54:24,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:54:24,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:54:24,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:54:24,964 INFO L87 Difference]: Start difference. First operand 346 states and 382 transitions. Second operand has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:54:25,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:54:25,233 INFO L93 Difference]: Finished difference Result 716 states and 791 transitions. [2021-11-23 13:54:25,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:54:25,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-23 13:54:25,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:54:25,237 INFO L225 Difference]: With dead ends: 716 [2021-11-23 13:54:25,237 INFO L226 Difference]: Without dead ends: 716 [2021-11-23 13:54:25,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:54:25,238 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 441 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:54:25,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 1697 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 129 Invalid, 0 Unknown, 118 Unchecked, 0.2s Time] [2021-11-23 13:54:25,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-11-23 13:54:25,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 348. [2021-11-23 13:54:25,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 226 states have (on average 1.6991150442477876) internal successors, (384), 347 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 13:54:25,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 384 transitions. [2021-11-23 13:54:25,249 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 384 transitions. Word has length 20 [2021-11-23 13:54:25,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:54:25,250 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 384 transitions. [2021-11-23 13:54:25,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:54:25,250 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 384 transitions. [2021-11-23 13:54:25,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 13:54:25,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:54:25,251 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] [2021-11-23 13:54:25,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:25,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:54:25,468 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr131ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:54:25,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:25,469 INFO L85 PathProgramCache]: Analyzing trace with hash -564126738, now seen corresponding path program 1 times [2021-11-23 13:54:25,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:54:25,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384924797] [2021-11-23 13:54:25,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:25,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:54:25,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:54:25,471 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:54:25,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-23 13:54:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:25,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:54:25,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:25,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:54:25,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:54:31,934 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 13:54:31,934 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:54:31,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384924797] [2021-11-23 13:54:31,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384924797] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:54:31,935 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:54:31,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 13:54:31,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643094408] [2021-11-23 13:54:31,935 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:54:31,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 13:54:31,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:54:31,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 13:54:31,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=49, Unknown=3, NotChecked=0, Total=72 [2021-11-23 13:54:31,936 INFO L87 Difference]: Start difference. First operand 348 states and 384 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:54:32,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:54:32,980 INFO L93 Difference]: Finished difference Result 351 states and 386 transitions. [2021-11-23 13:54:32,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:54:32,981 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-23 13:54:32,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:54:32,982 INFO L225 Difference]: With dead ends: 351 [2021-11-23 13:54:32,982 INFO L226 Difference]: Without dead ends: 337 [2021-11-23 13:54:32,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=32, Invalid=75, Unknown=3, NotChecked=0, Total=110 [2021-11-23 13:54:32,983 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 8 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:54:32,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 1369 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 588 Invalid, 0 Unknown, 139 Unchecked, 1.0s Time] [2021-11-23 13:54:32,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-11-23 13:54:32,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2021-11-23 13:54:32,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 215 states have (on average 1.7302325581395348) internal successors, (372), 336 states have internal predecessors, (372), 0 states have call successors, (0), 0 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 13:54:32,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 372 transitions. [2021-11-23 13:54:32,990 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 372 transitions. Word has length 20 [2021-11-23 13:54:32,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:54:32,990 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 372 transitions. [2021-11-23 13:54:32,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:54:32,990 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 372 transitions. [2021-11-23 13:54:32,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 13:54:32,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:54:32,991 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 13:54:33,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-11-23 13:54:33,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:54:33,202 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr102ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:54:33,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:33,202 INFO L85 PathProgramCache]: Analyzing trace with hash 653755046, now seen corresponding path program 1 times [2021-11-23 13:54:33,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:54:33,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463570402] [2021-11-23 13:54:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:33,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:54:33,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:54:33,204 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:54:33,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-23 13:54:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:33,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:54:33,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:33,293 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 13:54:33,328 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 13:54:33,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:54:33,380 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 13:54:33,381 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:54:33,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463570402] [2021-11-23 13:54:33,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463570402] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:54:33,381 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:54:33,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 13:54:33,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253029351] [2021-11-23 13:54:33,381 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:54:33,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:54:33,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:54:33,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:54:33,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:54:33,383 INFO L87 Difference]: Start difference. First operand 337 states and 372 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:54:34,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:54:34,124 INFO L93 Difference]: Finished difference Result 533 states and 585 transitions. [2021-11-23 13:54:34,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:54:34,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-23 13:54:34,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:54:34,128 INFO L225 Difference]: With dead ends: 533 [2021-11-23 13:54:34,128 INFO L226 Difference]: Without dead ends: 533 [2021-11-23 13:54:34,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 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 13:54:34,129 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 548 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:54:34,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [548 Valid, 557 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 13:54:34,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-11-23 13:54:34,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 338. [2021-11-23 13:54:34,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 216 states have (on average 1.7268518518518519) internal successors, (373), 337 states have internal predecessors, (373), 0 states have call successors, (0), 0 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 13:54:34,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 373 transitions. [2021-11-23 13:54:34,137 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 373 transitions. Word has length 21 [2021-11-23 13:54:34,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:54:34,137 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 373 transitions. [2021-11-23 13:54:34,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:54:34,138 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 373 transitions. [2021-11-23 13:54:34,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 13:54:34,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:54:34,138 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 13:54:34,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:34,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:54:34,352 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:54:34,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:34,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1914757987, now seen corresponding path program 1 times [2021-11-23 13:54:34,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:54:34,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430765575] [2021-11-23 13:54:34,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:34,354 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:54:34,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:54:34,355 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:54:34,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-23 13:54:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:34,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:54:34,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:34,512 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 13:54:34,512 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 21 treesize of output 28 [2021-11-23 13:54:34,641 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-23 13:54:34,641 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 30 treesize of output 47 [2021-11-23 13:54:35,042 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-11-23 13:54:35,043 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 44 treesize of output 53 [2021-11-23 13:54:35,177 INFO L354 Elim1Store]: treesize reduction 42, result has 33.3 percent of original size [2021-11-23 13:54:35,177 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 38 treesize of output 51 [2021-11-23 13:54:35,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:54:35,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:54:43,829 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 13:54:43,830 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:54:43,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430765575] [2021-11-23 13:54:43,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430765575] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:54:43,830 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:54:43,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-23 13:54:43,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242293207] [2021-11-23 13:54:43,831 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:54:43,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 13:54:43,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:54:43,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 13:54:43,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=154, Unknown=4, NotChecked=0, Total=240 [2021-11-23 13:54:43,832 INFO L87 Difference]: Start difference. First operand 338 states and 373 transitions. Second operand has 16 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:01,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:01,069 INFO L93 Difference]: Finished difference Result 535 states and 588 transitions. [2021-11-23 13:55:01,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 13:55:01,070 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-23 13:55:01,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:01,072 INFO L225 Difference]: With dead ends: 535 [2021-11-23 13:55:01,072 INFO L226 Difference]: Without dead ends: 535 [2021-11-23 13:55:01,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=132, Invalid=238, Unknown=10, NotChecked=0, Total=380 [2021-11-23 13:55:01,073 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 922 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 494 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:01,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [922 Valid, 991 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 347 Invalid, 0 Unknown, 494 Unchecked, 1.0s Time] [2021-11-23 13:55:01,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-11-23 13:55:01,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 340. [2021-11-23 13:55:01,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 218 states have (on average 1.724770642201835) internal successors, (376), 339 states have internal predecessors, (376), 0 states have call successors, (0), 0 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 13:55:01,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 376 transitions. [2021-11-23 13:55:01,079 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 376 transitions. Word has length 21 [2021-11-23 13:55:01,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:01,080 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 376 transitions. [2021-11-23 13:55:01,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:01,080 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 376 transitions. [2021-11-23 13:55:01,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 13:55:01,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:01,081 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 13:55:01,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-11-23 13:55:01,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:01,292 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr110REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:55:01,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:01,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1914757986, now seen corresponding path program 1 times [2021-11-23 13:55:01,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:01,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115572693] [2021-11-23 13:55:01,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:01,293 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:01,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:01,294 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:01,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-23 13:55:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:01,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:55:01,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:01,453 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 13:55:01,454 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 26 treesize of output 28 [2021-11-23 13:55:01,535 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 13:55:01,535 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 13:55:02,032 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 13:55:02,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:02,722 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 13:55:02,722 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:02,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115572693] [2021-11-23 13:55:02,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115572693] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:02,723 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:02,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 9 [2021-11-23 13:55:02,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498721993] [2021-11-23 13:55:02,723 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:02,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 13:55:02,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:02,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 13:55:02,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:55:02,725 INFO L87 Difference]: Start difference. First operand 340 states and 376 transitions. Second operand has 11 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:02,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:02,754 INFO L93 Difference]: Finished difference Result 340 states and 375 transitions. [2021-11-23 13:55:02,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:55:02,755 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-23 13:55:02,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:02,757 INFO L225 Difference]: With dead ends: 340 [2021-11-23 13:55:02,757 INFO L226 Difference]: Without dead ends: 340 [2021-11-23 13:55:02,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:55:02,758 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 22 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 523 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:02,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 1453 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 523 Unchecked, 0.0s Time] [2021-11-23 13:55:02,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-23 13:55:02,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2021-11-23 13:55:02,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 218 states have (on average 1.7201834862385321) internal successors, (375), 339 states have internal predecessors, (375), 0 states have call successors, (0), 0 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 13:55:02,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 375 transitions. [2021-11-23 13:55:02,763 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 375 transitions. Word has length 21 [2021-11-23 13:55:02,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:02,763 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 375 transitions. [2021-11-23 13:55:02,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:02,764 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 375 transitions. [2021-11-23 13:55:02,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 13:55:02,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:02,764 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 13:55:02,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:02,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:02,974 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr104ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:55:02,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:02,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1193389640, now seen corresponding path program 1 times [2021-11-23 13:55:02,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:02,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545294421] [2021-11-23 13:55:02,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:02,975 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:02,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:02,976 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:02,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-23 13:55:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:03,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:55:03,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:03,402 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 13:55:03,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:03,507 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 13:55:03,508 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:03,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545294421] [2021-11-23 13:55:03,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545294421] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:03,508 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:03,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-11-23 13:55:03,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036796285] [2021-11-23 13:55:03,508 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:03,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:55:03,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:03,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:55:03,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:55:03,509 INFO L87 Difference]: Start difference. First operand 340 states and 375 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 13:55:03,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:03,644 INFO L93 Difference]: Finished difference Result 557 states and 618 transitions. [2021-11-23 13:55:03,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:55:03,645 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 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 13:55:03,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:03,647 INFO L225 Difference]: With dead ends: 557 [2021-11-23 13:55:03,647 INFO L226 Difference]: Without dead ends: 557 [2021-11-23 13:55:03,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 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 13:55:03,648 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 336 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:03,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 1989 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 92 Unchecked, 0.1s Time] [2021-11-23 13:55:03,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-11-23 13:55:03,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 342. [2021-11-23 13:55:03,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 220 states have (on average 1.7136363636363636) internal successors, (377), 341 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:03,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 377 transitions. [2021-11-23 13:55:03,654 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 377 transitions. Word has length 23 [2021-11-23 13:55:03,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:03,654 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 377 transitions. [2021-11-23 13:55:03,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 13:55:03,654 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 377 transitions. [2021-11-23 13:55:03,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 13:55:03,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:03,655 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 13:55:03,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:03,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:03,862 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr111REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:55:03,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:03,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1836408546, now seen corresponding path program 1 times [2021-11-23 13:55:03,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:03,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796435907] [2021-11-23 13:55:03,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:03,863 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:03,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:03,864 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:03,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-23 13:55:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:03,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 13:55:03,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:04,118 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-23 13:55:04,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 19 treesize of output 26 [2021-11-23 13:55:04,303 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 22 treesize of output 21 [2021-11-23 13:55:04,403 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 13:55:04,486 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 13:55:04,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:04,581 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-23 13:55:04,581 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 37 treesize of output 36 [2021-11-23 13:55:04,836 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 13:55:04,836 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:04,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796435907] [2021-11-23 13:55:04,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796435907] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:04,836 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:04,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 13 [2021-11-23 13:55:04,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409939002] [2021-11-23 13:55:04,837 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:04,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 13:55:04,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:04,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 13:55:04,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:55:04,838 INFO L87 Difference]: Start difference. First operand 342 states and 377 transitions. Second operand has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 13:55:07,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:07,932 INFO L93 Difference]: Finished difference Result 344 states and 380 transitions. [2021-11-23 13:55:07,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:55:07,932 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 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 13:55:07,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:07,934 INFO L225 Difference]: With dead ends: 344 [2021-11-23 13:55:07,934 INFO L226 Difference]: Without dead ends: 344 [2021-11-23 13:55:07,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-11-23 13:55:07,934 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 28 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 295 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:07,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 1898 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 426 Invalid, 0 Unknown, 295 Unchecked, 3.0s Time] [2021-11-23 13:55:07,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-23 13:55:07,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2021-11-23 13:55:07,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 222 states have (on average 1.7117117117117118) internal successors, (380), 343 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 13:55:07,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 380 transitions. [2021-11-23 13:55:07,939 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 380 transitions. Word has length 23 [2021-11-23 13:55:07,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:07,939 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 380 transitions. [2021-11-23 13:55:07,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 13:55:07,940 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 380 transitions. [2021-11-23 13:55:07,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 13:55:07,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:07,940 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 13:55:07,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:08,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:08,150 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr112REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:55:08,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:08,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1836408545, now seen corresponding path program 1 times [2021-11-23 13:55:08,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:08,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228773211] [2021-11-23 13:55:08,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:08,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:08,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:08,152 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:08,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-23 13:55:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:08,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 13:55:08,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:08,482 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-23 13:55:08,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 37 treesize of output 44 [2021-11-23 13:55:08,528 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-23 13:55:08,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 34 treesize of output 41 [2021-11-23 13:55:08,841 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 30 treesize of output 29 [2021-11-23 13:55:08,964 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 53 treesize of output 45 [2021-11-23 13:55:08,969 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 42 treesize of output 34 [2021-11-23 13:55:08,983 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:55:08,984 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 31 treesize of output 31 [2021-11-23 13:55:09,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:09,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:09,279 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:55:09,279 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 38 treesize of output 42 [2021-11-23 13:55:09,552 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 15 treesize of output 13 [2021-11-23 13:55:10,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:10,499 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:10,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228773211] [2021-11-23 13:55:10,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228773211] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:10,501 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:10,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 13 [2021-11-23 13:55:10,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310443040] [2021-11-23 13:55:10,502 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:10,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 13:55:10,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:10,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 13:55:10,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:55:10,503 INFO L87 Difference]: Start difference. First operand 344 states and 380 transitions. Second operand has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 13:55:16,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:16,251 INFO L93 Difference]: Finished difference Result 421 states and 458 transitions. [2021-11-23 13:55:16,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:55:16,252 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 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 13:55:16,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:16,254 INFO L225 Difference]: With dead ends: 421 [2021-11-23 13:55:16,254 INFO L226 Difference]: Without dead ends: 421 [2021-11-23 13:55:16,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-11-23 13:55:16,255 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 102 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:16,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 2163 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 792 Invalid, 0 Unknown, 160 Unchecked, 5.6s Time] [2021-11-23 13:55:16,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-11-23 13:55:16,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 344. [2021-11-23 13:55:16,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 222 states have (on average 1.7072072072072073) internal successors, (379), 343 states have internal predecessors, (379), 0 states have call successors, (0), 0 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 13:55:16,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 379 transitions. [2021-11-23 13:55:16,262 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 379 transitions. Word has length 23 [2021-11-23 13:55:16,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:16,262 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 379 transitions. [2021-11-23 13:55:16,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 13:55:16,263 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 379 transitions. [2021-11-23 13:55:16,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 13:55:16,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:16,264 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 13:55:16,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:16,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:16,481 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr97ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:55:16,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:16,482 INFO L85 PathProgramCache]: Analyzing trace with hash 694912826, now seen corresponding path program 1 times [2021-11-23 13:55:16,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:16,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007378252] [2021-11-23 13:55:16,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:16,482 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:16,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:16,483 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:16,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-11-23 13:55:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:16,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:55:16,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:16,592 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 13:55:16,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:16,616 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 13:55:16,616 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:16,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007378252] [2021-11-23 13:55:16,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007378252] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:16,616 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:16,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:55:16,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308501612] [2021-11-23 13:55:16,616 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:16,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:55:16,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:16,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:55:16,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:55:16,620 INFO L87 Difference]: Start difference. First operand 344 states and 379 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 13:55:16,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:16,724 INFO L93 Difference]: Finished difference Result 1195 states and 1304 transitions. [2021-11-23 13:55:16,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:55:16,724 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 13:55:16,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:16,730 INFO L225 Difference]: With dead ends: 1195 [2021-11-23 13:55:16,730 INFO L226 Difference]: Without dead ends: 1195 [2021-11-23 13:55:16,730 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 13:55:16,731 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 1246 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:16,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1246 Valid, 1190 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:55:16,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2021-11-23 13:55:16,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 346. [2021-11-23 13:55:16,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 224 states have (on average 1.7008928571428572) internal successors, (381), 345 states have internal predecessors, (381), 0 states have call successors, (0), 0 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 13:55:16,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 381 transitions. [2021-11-23 13:55:16,741 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 381 transitions. Word has length 24 [2021-11-23 13:55:16,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:16,741 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 381 transitions. [2021-11-23 13:55:16,741 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 13:55:16,741 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 381 transitions. [2021-11-23 13:55:16,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 13:55:16,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:16,742 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 13:55:16,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-11-23 13:55:16,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:16,953 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:55:16,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:16,954 INFO L85 PathProgramCache]: Analyzing trace with hash 694912521, now seen corresponding path program 1 times [2021-11-23 13:55:16,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:16,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440479004] [2021-11-23 13:55:16,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:16,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:16,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:16,956 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:16,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-11-23 13:55:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:17,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 13:55:17,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:17,186 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 13:55:17,186 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 13:55:17,197 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:55:17,198 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 13:55:17,236 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 13:55:17,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:17,466 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 55 treesize of output 51 [2021-11-23 13:55:17,501 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 13:55:17,502 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 51 treesize of output 50 [2021-11-23 13:55:17,900 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 13:55:17,900 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:17,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [440479004] [2021-11-23 13:55:17,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [440479004] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:17,900 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:17,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-23 13:55:17,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764512277] [2021-11-23 13:55:17,901 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:17,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:55:17,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:17,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:55:17,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:55:17,902 INFO L87 Difference]: Start difference. First operand 346 states and 381 transitions. Second operand has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 13:55:18,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:18,970 INFO L93 Difference]: Finished difference Result 429 states and 465 transitions. [2021-11-23 13:55:18,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:55:18,972 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 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 13:55:18,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:18,974 INFO L225 Difference]: With dead ends: 429 [2021-11-23 13:55:18,975 INFO L226 Difference]: Without dead ends: 429 [2021-11-23 13:55:18,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-23 13:55:18,976 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 1129 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:18,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1129 Valid, 487 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 322 Invalid, 0 Unknown, 136 Unchecked, 1.0s Time] [2021-11-23 13:55:18,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-11-23 13:55:18,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 345. [2021-11-23 13:55:18,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 224 states have (on average 1.6964285714285714) internal successors, (380), 344 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 13:55:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 380 transitions. [2021-11-23 13:55:18,984 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 380 transitions. Word has length 24 [2021-11-23 13:55:18,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:18,985 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 380 transitions. [2021-11-23 13:55:18,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 13:55:18,985 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 380 transitions. [2021-11-23 13:55:18,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 13:55:18,986 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:18,986 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 13:55:18,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:19,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:19,198 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr97ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:55:19,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:19,199 INFO L85 PathProgramCache]: Analyzing trace with hash 694972408, now seen corresponding path program 1 times [2021-11-23 13:55:19,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:19,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806840311] [2021-11-23 13:55:19,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:19,199 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:19,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:19,200 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:19,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-11-23 13:55:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:19,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:55:19,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:19,325 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 13:55:19,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:19,356 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 13:55:19,356 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:19,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806840311] [2021-11-23 13:55:19,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806840311] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:19,356 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:19,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 13:55:19,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900284173] [2021-11-23 13:55:19,357 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:19,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:55:19,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:19,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:55:19,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:55:19,358 INFO L87 Difference]: Start difference. First operand 345 states and 380 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 13:55:19,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:19,410 INFO L93 Difference]: Finished difference Result 387 states and 422 transitions. [2021-11-23 13:55:19,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:55:19,410 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 13:55:19,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:19,411 INFO L225 Difference]: With dead ends: 387 [2021-11-23 13:55:19,411 INFO L226 Difference]: Without dead ends: 387 [2021-11-23 13:55:19,412 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 13:55:19,412 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 647 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:19,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 460 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:55:19,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-23 13:55:19,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 344. [2021-11-23 13:55:19,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 224 states have (on average 1.6875) internal successors, (378), 343 states have internal predecessors, (378), 0 states have call successors, (0), 0 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 13:55:19,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 378 transitions. [2021-11-23 13:55:19,416 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 378 transitions. Word has length 24 [2021-11-23 13:55:19,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:19,416 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 378 transitions. [2021-11-23 13:55:19,416 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 13:55:19,416 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 378 transitions. [2021-11-23 13:55:19,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 13:55:19,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:19,417 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] [2021-11-23 13:55:19,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2021-11-23 13:55:19,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:19,627 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr105ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:55:19,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:19,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1659626331, now seen corresponding path program 1 times [2021-11-23 13:55:19,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:19,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247517622] [2021-11-23 13:55:19,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:19,628 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:19,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:19,629 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:19,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-11-23 13:55:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:19,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 13:55:19,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:19,715 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 13:55:19,768 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:55:19,769 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 13:55:19,882 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 13:55:19,882 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 13:55:19,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:19,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:20,069 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 13:55:20,121 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 13:55:20,121 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:20,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247517622] [2021-11-23 13:55:20,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247517622] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:20,121 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:20,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 7 [2021-11-23 13:55:20,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548987518] [2021-11-23 13:55:20,122 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:20,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:55:20,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:20,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:55:20,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:55:20,123 INFO L87 Difference]: Start difference. First operand 344 states and 378 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 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 13:55:21,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:21,370 INFO L93 Difference]: Finished difference Result 628 states and 688 transitions. [2021-11-23 13:55:21,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:55:21,371 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 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 24 [2021-11-23 13:55:21,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:21,373 INFO L225 Difference]: With dead ends: 628 [2021-11-23 13:55:21,373 INFO L226 Difference]: Without dead ends: 628 [2021-11-23 13:55:21,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 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 13:55:21,374 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 1394 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:21,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1394 Valid, 989 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 464 Invalid, 0 Unknown, 92 Unchecked, 1.1s Time] [2021-11-23 13:55:21,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-11-23 13:55:21,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 345. [2021-11-23 13:55:21,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 225 states have (on average 1.6844444444444444) internal successors, (379), 344 states have internal predecessors, (379), 0 states have call successors, (0), 0 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 13:55:21,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 379 transitions. [2021-11-23 13:55:21,381 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 379 transitions. Word has length 24 [2021-11-23 13:55:21,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:21,381 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 379 transitions. [2021-11-23 13:55:21,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 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 13:55:21,382 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 379 transitions. [2021-11-23 13:55:21,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 13:55:21,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:21,382 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] [2021-11-23 13:55:21,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:21,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:21,594 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:55:21,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:21,594 INFO L85 PathProgramCache]: Analyzing trace with hash 67451689, now seen corresponding path program 1 times [2021-11-23 13:55:21,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:21,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405000096] [2021-11-23 13:55:21,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:21,595 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:21,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:21,596 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:21,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-11-23 13:55:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:21,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 13:55:21,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:21,721 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 13:55:21,763 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 13:55:21,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:21,896 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 13:55:21,896 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:21,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405000096] [2021-11-23 13:55:21,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405000096] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:21,897 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:21,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-23 13:55:21,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819461087] [2021-11-23 13:55:21,897 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:21,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:55:21,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:21,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:55:21,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:55:21,898 INFO L87 Difference]: Start difference. First operand 345 states and 379 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 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 13:55:24,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:24,402 INFO L93 Difference]: Finished difference Result 750 states and 807 transitions. [2021-11-23 13:55:24,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:55:24,403 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 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 25 [2021-11-23 13:55:24,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:24,405 INFO L225 Difference]: With dead ends: 750 [2021-11-23 13:55:24,405 INFO L226 Difference]: Without dead ends: 750 [2021-11-23 13:55:24,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:55:24,405 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 849 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:24,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [849 Valid, 1833 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 13:55:24,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-11-23 13:55:24,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 347. [2021-11-23 13:55:24,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 227 states have (on average 1.6828193832599119) internal successors, (382), 346 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:24,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 382 transitions. [2021-11-23 13:55:24,410 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 382 transitions. Word has length 25 [2021-11-23 13:55:24,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:24,410 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 382 transitions. [2021-11-23 13:55:24,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 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 13:55:24,410 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 382 transitions. [2021-11-23 13:55:24,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 13:55:24,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:24,411 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] [2021-11-23 13:55:24,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:24,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:24,611 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:55:24,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:24,612 INFO L85 PathProgramCache]: Analyzing trace with hash 67451688, now seen corresponding path program 1 times [2021-11-23 13:55:24,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:24,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201358009] [2021-11-23 13:55:24,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:24,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:24,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:24,613 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:24,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-11-23 13:55:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:24,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:55:24,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:24,744 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 13:55:24,762 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 13:55:24,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:24,801 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 13:55:24,801 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:24,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201358009] [2021-11-23 13:55:24,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201358009] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:24,801 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:24,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 13:55:24,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340092003] [2021-11-23 13:55:24,802 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:24,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:55:24,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:24,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:55:24,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:55:24,802 INFO L87 Difference]: Start difference. First operand 347 states and 382 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 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 13:55:25,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:25,545 INFO L93 Difference]: Finished difference Result 526 states and 579 transitions. [2021-11-23 13:55:25,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:55:25,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-23 13:55:25,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:25,549 INFO L225 Difference]: With dead ends: 526 [2021-11-23 13:55:25,549 INFO L226 Difference]: Without dead ends: 526 [2021-11-23 13:55:25,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 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 13:55:25,549 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 510 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:25,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 568 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 13:55:25,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-11-23 13:55:25,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 347. [2021-11-23 13:55:25,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 227 states have (on average 1.6784140969162995) internal successors, (381), 346 states have internal predecessors, (381), 0 states have call successors, (0), 0 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 13:55:25,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 381 transitions. [2021-11-23 13:55:25,558 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 381 transitions. Word has length 25 [2021-11-23 13:55:25,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:25,558 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 381 transitions. [2021-11-23 13:55:25,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 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 13:55:25,559 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 381 transitions. [2021-11-23 13:55:25,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 13:55:25,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:25,559 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] [2021-11-23 13:55:25,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:25,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:25,770 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr98ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:55:25,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:25,770 INFO L85 PathProgramCache]: Analyzing trace with hash 69308645, now seen corresponding path program 1 times [2021-11-23 13:55:25,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:25,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411246892] [2021-11-23 13:55:25,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:25,771 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:25,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:25,772 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:25,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-11-23 13:55:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:25,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:55:25,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:26,264 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 13:55:26,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:26,337 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 13:55:26,337 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:26,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411246892] [2021-11-23 13:55:26,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411246892] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:26,338 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:26,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-11-23 13:55:26,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60944362] [2021-11-23 13:55:26,339 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:26,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:55:26,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:26,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:55:26,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:55:26,340 INFO L87 Difference]: Start difference. First operand 347 states and 381 transitions. Second operand has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 13:55:26,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:26,523 INFO L93 Difference]: Finished difference Result 958 states and 1065 transitions. [2021-11-23 13:55:26,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:55:26,524 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-23 13:55:26,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:26,527 INFO L225 Difference]: With dead ends: 958 [2021-11-23 13:55:26,528 INFO L226 Difference]: Without dead ends: 958 [2021-11-23 13:55:26,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:55:26,529 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 1320 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 185 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:26,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1320 Valid, 1792 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 61 Invalid, 0 Unknown, 185 Unchecked, 0.1s Time] [2021-11-23 13:55:26,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2021-11-23 13:55:26,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 347. [2021-11-23 13:55:26,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 227 states have (on average 1.6740088105726871) internal successors, (380), 346 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 13:55:26,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 380 transitions. [2021-11-23 13:55:26,537 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 380 transitions. Word has length 25 [2021-11-23 13:55:26,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:26,537 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 380 transitions. [2021-11-23 13:55:26,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 13:55:26,537 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 380 transitions. [2021-11-23 13:55:26,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 13:55:26,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:26,538 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] [2021-11-23 13:55:26,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2021-11-23 13:55:26,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:26,742 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:55:26,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:26,742 INFO L85 PathProgramCache]: Analyzing trace with hash 69298731, now seen corresponding path program 1 times [2021-11-23 13:55:26,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:26,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938589574] [2021-11-23 13:55:26,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:26,743 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:26,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:26,744 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:26,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-11-23 13:55:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:26,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:55:26,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:26,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:26,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:26,961 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 13:55:26,961 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:26,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938589574] [2021-11-23 13:55:26,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938589574] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:26,961 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:26,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:55:26,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328868929] [2021-11-23 13:55:26,962 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:26,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:55:26,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:26,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:55:26,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:55:26,963 INFO L87 Difference]: Start difference. First operand 347 states and 380 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 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 13:55:27,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:27,079 INFO L93 Difference]: Finished difference Result 682 states and 735 transitions. [2021-11-23 13:55:27,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:55:27,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-23 13:55:27,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:27,098 INFO L225 Difference]: With dead ends: 682 [2021-11-23 13:55:27,098 INFO L226 Difference]: Without dead ends: 682 [2021-11-23 13:55:27,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 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 13:55:27,099 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 383 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:27,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 1510 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:55:27,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2021-11-23 13:55:27,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 343. [2021-11-23 13:55:27,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 225 states have (on average 1.6666666666666667) internal successors, (375), 342 states have internal predecessors, (375), 0 states have call successors, (0), 0 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 13:55:27,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 375 transitions. [2021-11-23 13:55:27,120 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 375 transitions. Word has length 25 [2021-11-23 13:55:27,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:27,120 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 375 transitions. [2021-11-23 13:55:27,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 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 13:55:27,121 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 375 transitions. [2021-11-23 13:55:27,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 13:55:27,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:27,121 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] [2021-11-23 13:55:27,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:27,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:27,336 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr99ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:55:27,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:27,337 INFO L85 PathProgramCache]: Analyzing trace with hash -2146398822, now seen corresponding path program 1 times [2021-11-23 13:55:27,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:27,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55490572] [2021-11-23 13:55:27,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:27,338 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:27,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:27,339 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:27,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-11-23 13:55:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:27,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:55:27,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:27,503 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 13:55:27,550 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 13:55:27,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:27,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:27,620 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:27,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55490572] [2021-11-23 13:55:27,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55490572] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:27,621 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:27,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 13:55:27,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336552695] [2021-11-23 13:55:27,621 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:27,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:55:27,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:27,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:55:27,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:55:27,622 INFO L87 Difference]: Start difference. First operand 343 states and 375 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:28,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:28,390 INFO L93 Difference]: Finished difference Result 513 states and 563 transitions. [2021-11-23 13:55:28,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:55:28,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-23 13:55:28,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:28,395 INFO L225 Difference]: With dead ends: 513 [2021-11-23 13:55:28,396 INFO L226 Difference]: Without dead ends: 513 [2021-11-23 13:55:28,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 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 13:55:28,397 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 504 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:28,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 553 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 13:55:28,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-11-23 13:55:28,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 343. [2021-11-23 13:55:28,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 225 states have (on average 1.6622222222222223) internal successors, (374), 342 states have internal predecessors, (374), 0 states have call successors, (0), 0 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 13:55:28,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 374 transitions. [2021-11-23 13:55:28,404 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 374 transitions. Word has length 26 [2021-11-23 13:55:28,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:28,405 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 374 transitions. [2021-11-23 13:55:28,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:28,405 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 374 transitions. [2021-11-23 13:55:28,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 13:55:28,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:28,405 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] [2021-11-23 13:55:28,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:28,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:28,606 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr113REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:55:28,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:28,607 INFO L85 PathProgramCache]: Analyzing trace with hash 846869669, now seen corresponding path program 1 times [2021-11-23 13:55:28,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:28,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692787790] [2021-11-23 13:55:28,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:28,607 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:28,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:28,608 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:28,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-11-23 13:55:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:28,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:55:28,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:28,755 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 13:55:28,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:28,793 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 13:55:28,793 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:28,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692787790] [2021-11-23 13:55:28,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692787790] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:28,794 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:28,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 13:55:28,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202928111] [2021-11-23 13:55:28,794 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:28,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:55:28,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:28,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:55:28,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:55:28,795 INFO L87 Difference]: Start difference. First operand 343 states and 374 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:29,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:29,372 INFO L93 Difference]: Finished difference Result 383 states and 415 transitions. [2021-11-23 13:55:29,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:55:29,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-23 13:55:29,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:29,374 INFO L225 Difference]: With dead ends: 383 [2021-11-23 13:55:29,374 INFO L226 Difference]: Without dead ends: 383 [2021-11-23 13:55:29,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 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 13:55:29,374 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 85 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:29,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 731 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 13:55:29,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-11-23 13:55:29,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 344. [2021-11-23 13:55:29,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 227 states have (on average 1.6607929515418502) internal successors, (377), 343 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:29,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 377 transitions. [2021-11-23 13:55:29,379 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 377 transitions. Word has length 26 [2021-11-23 13:55:29,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:29,380 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 377 transitions. [2021-11-23 13:55:29,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:29,380 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 377 transitions. [2021-11-23 13:55:29,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 13:55:29,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:29,380 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] [2021-11-23 13:55:29,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:29,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:29,581 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr114REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:55:29,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:29,581 INFO L85 PathProgramCache]: Analyzing trace with hash 846869670, now seen corresponding path program 1 times [2021-11-23 13:55:29,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:29,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168271214] [2021-11-23 13:55:29,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:29,582 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:29,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:29,583 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:29,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-11-23 13:55:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:29,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-23 13:55:29,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:29,971 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-23 13:55:29,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 37 treesize of output 44 [2021-11-23 13:55:30,019 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-23 13:55:30,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 34 treesize of output 41 [2021-11-23 13:55:30,390 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 30 treesize of output 29 [2021-11-23 13:55:30,566 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 52 treesize of output 44 [2021-11-23 13:55:30,572 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 33 [2021-11-23 13:55:30,587 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:55:30,588 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 30 treesize of output 30 [2021-11-23 13:55:30,733 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 13:55:30,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:30,904 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 15 treesize of output 13 [2021-11-23 13:55:31,307 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 13:55:31,307 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:31,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168271214] [2021-11-23 13:55:31,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168271214] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:31,307 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:31,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2021-11-23 13:55:31,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939478383] [2021-11-23 13:55:31,308 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:31,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 13:55:31,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:31,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 13:55:31,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:55:31,309 INFO L87 Difference]: Start difference. First operand 344 states and 377 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:33,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:33,834 INFO L93 Difference]: Finished difference Result 350 states and 382 transitions. [2021-11-23 13:55:33,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:55:33,834 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-23 13:55:33,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:33,835 INFO L225 Difference]: With dead ends: 350 [2021-11-23 13:55:33,835 INFO L226 Difference]: Without dead ends: 350 [2021-11-23 13:55:33,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-11-23 13:55:33,836 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 35 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2040 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:33,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 2040 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 350 Invalid, 0 Unknown, 12 Unchecked, 2.4s Time] [2021-11-23 13:55:33,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-11-23 13:55:33,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 346. [2021-11-23 13:55:33,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 229 states have (on average 1.6550218340611353) internal successors, (379), 345 states have internal predecessors, (379), 0 states have call successors, (0), 0 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 13:55:33,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 379 transitions. [2021-11-23 13:55:33,842 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 379 transitions. Word has length 26 [2021-11-23 13:55:33,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:33,842 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 379 transitions. [2021-11-23 13:55:33,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:33,843 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 379 transitions. [2021-11-23 13:55:33,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 13:55:33,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:33,843 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] [2021-11-23 13:55:33,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:34,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:34,044 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:55:34,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:34,044 INFO L85 PathProgramCache]: Analyzing trace with hash 396564361, now seen corresponding path program 1 times [2021-11-23 13:55:34,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:34,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802280876] [2021-11-23 13:55:34,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:34,044 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:34,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:34,045 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:34,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-11-23 13:55:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:34,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:55:34,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:34,260 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 13:55:34,260 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 15 treesize of output 20 [2021-11-23 13:55:34,291 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 13:55:34,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:34,361 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 13:55:34,361 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:34,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802280876] [2021-11-23 13:55:34,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802280876] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:34,361 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:34,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 13:55:34,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404276259] [2021-11-23 13:55:34,362 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:34,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:55:34,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:34,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:55:34,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:55:34,363 INFO L87 Difference]: Start difference. First operand 346 states and 379 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 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 13:55:34,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:34,780 INFO L93 Difference]: Finished difference Result 345 states and 378 transitions. [2021-11-23 13:55:34,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:55:34,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-23 13:55:34,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:34,781 INFO L225 Difference]: With dead ends: 345 [2021-11-23 13:55:34,781 INFO L226 Difference]: Without dead ends: 345 [2021-11-23 13:55:34,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:55:34,782 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 23 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:34,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 733 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 137 Invalid, 0 Unknown, 136 Unchecked, 0.4s Time] [2021-11-23 13:55:34,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-23 13:55:34,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2021-11-23 13:55:34,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 229 states have (on average 1.6506550218340612) internal successors, (378), 344 states have internal predecessors, (378), 0 states have call successors, (0), 0 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 13:55:34,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 378 transitions. [2021-11-23 13:55:34,787 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 378 transitions. Word has length 27 [2021-11-23 13:55:34,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:34,788 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 378 transitions. [2021-11-23 13:55:34,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 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 13:55:34,788 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 378 transitions. [2021-11-23 13:55:34,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 13:55:34,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:34,788 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] [2021-11-23 13:55:34,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:34,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:34,989 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:55:34,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:34,989 INFO L85 PathProgramCache]: Analyzing trace with hash 396564362, now seen corresponding path program 1 times [2021-11-23 13:55:34,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:34,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122425262] [2021-11-23 13:55:34,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:34,990 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:34,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:34,994 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:34,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-11-23 13:55:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:35,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 13:55:35,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:35,204 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 13:55:35,294 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 13:55:35,295 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 31 treesize of output 33 [2021-11-23 13:55:35,301 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 13:55:35,301 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 30 treesize of output 26 [2021-11-23 13:55:35,336 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 13:55:35,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:35,630 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 13:55:35,630 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 40 treesize of output 39 [2021-11-23 13:55:38,036 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 86 treesize of output 82 [2021-11-23 13:55:38,473 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 13:55:38,473 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:38,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122425262] [2021-11-23 13:55:38,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122425262] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:38,474 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:38,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 10 [2021-11-23 13:55:38,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909908750] [2021-11-23 13:55:38,474 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:38,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 13:55:38,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:38,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 13:55:38,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:55:38,475 INFO L87 Difference]: Start difference. First operand 345 states and 378 transitions. Second operand has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:39,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:39,647 INFO L93 Difference]: Finished difference Result 351 states and 382 transitions. [2021-11-23 13:55:39,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:55:39,648 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-23 13:55:39,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:39,649 INFO L225 Difference]: With dead ends: 351 [2021-11-23 13:55:39,649 INFO L226 Difference]: Without dead ends: 351 [2021-11-23 13:55:39,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-11-23 13:55:39,650 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 501 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 273 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:39,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 1178 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 197 Invalid, 0 Unknown, 273 Unchecked, 1.1s Time] [2021-11-23 13:55:39,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-11-23 13:55:39,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 344. [2021-11-23 13:55:39,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 229 states have (on average 1.6462882096069869) internal successors, (377), 343 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:39,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 377 transitions. [2021-11-23 13:55:39,654 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 377 transitions. Word has length 27 [2021-11-23 13:55:39,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:39,655 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 377 transitions. [2021-11-23 13:55:39,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:39,655 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 377 transitions. [2021-11-23 13:55:39,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 13:55:39,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:39,655 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] [2021-11-23 13:55:39,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:39,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:39,856 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr108ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:55:39,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:39,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1735977325, now seen corresponding path program 1 times [2021-11-23 13:55:39,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:39,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [264681500] [2021-11-23 13:55:39,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:39,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:39,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:39,860 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:39,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-11-23 13:55:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:39,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 13:55:39,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:39,945 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 13:55:39,988 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 13:55:39,988 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 25 treesize of output 32 [2021-11-23 13:55:40,129 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-23 13:55:40,129 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 36 treesize of output 53 [2021-11-23 13:55:40,673 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-11-23 13:55:40,674 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 57 treesize of output 66 [2021-11-23 13:55:41,009 INFO L354 Elim1Store]: treesize reduction 46, result has 27.0 percent of original size [2021-11-23 13:55:41,010 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 59 treesize of output 68 [2021-11-23 13:55:41,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:41,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:56:08,498 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 13:56:08,498 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:56:08,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [264681500] [2021-11-23 13:56:08,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [264681500] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:56:08,499 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:56:08,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 10] imperfect sequences [] total 17 [2021-11-23 13:56:08,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620509115] [2021-11-23 13:56:08,499 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:56:08,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 13:56:08,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:56:08,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 13:56:08,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=209, Unknown=8, NotChecked=0, Total=306 [2021-11-23 13:56:08,501 INFO L87 Difference]: Start difference. First operand 344 states and 377 transitions. Second operand has 18 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 18 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:56:12,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:56:12,616 INFO L93 Difference]: Finished difference Result 347 states and 380 transitions. [2021-11-23 13:56:12,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:56:12,617 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 18 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-23 13:56:12,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:56:12,618 INFO L225 Difference]: With dead ends: 347 [2021-11-23 13:56:12,618 INFO L226 Difference]: Without dead ends: 347 [2021-11-23 13:56:12,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=112, Invalid=258, Unknown=10, NotChecked=0, Total=380 [2021-11-23 13:56:12,620 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 41 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 888 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:56:12,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 1502 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 888 Unchecked, 0.0s Time] [2021-11-23 13:56:12,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-11-23 13:56:12,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2021-11-23 13:56:12,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 232 states have (on average 1.6379310344827587) internal successors, (380), 346 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 13:56:12,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 380 transitions. [2021-11-23 13:56:12,625 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 380 transitions. Word has length 27 [2021-11-23 13:56:12,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:56:12,626 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 380 transitions. [2021-11-23 13:56:12,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 18 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:56:12,626 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 380 transitions. [2021-11-23 13:56:12,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 13:56:12,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:56:12,627 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 13:56:12,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-11-23 13:56:12,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:56:12,830 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr101ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:56:12,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:56:12,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1104950436, now seen corresponding path program 1 times [2021-11-23 13:56:12,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:56:12,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429915444] [2021-11-23 13:56:12,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:56:12,831 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:56:12,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:56:12,832 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:56:12,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-11-23 13:56:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:56:12,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:56:12,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:56:13,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:56:13,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:56:13,429 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 13:56:13,429 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:56:13,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429915444] [2021-11-23 13:56:13,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429915444] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:56:13,430 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:56:13,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-11-23 13:56:13,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79913206] [2021-11-23 13:56:13,431 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:56:13,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:56:13,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:56:13,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:56:13,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:56:13,432 INFO L87 Difference]: Start difference. First operand 347 states and 380 transitions. Second operand has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:56:13,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:56:13,564 INFO L93 Difference]: Finished difference Result 545 states and 600 transitions. [2021-11-23 13:56:13,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:56:13,565 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-23 13:56:13,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:56:13,566 INFO L225 Difference]: With dead ends: 545 [2021-11-23 13:56:13,566 INFO L226 Difference]: Without dead ends: 545 [2021-11-23 13:56:13,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 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 13:56:13,567 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 333 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:56:13,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 1665 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 59 Invalid, 0 Unknown, 82 Unchecked, 0.1s Time] [2021-11-23 13:56:13,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-11-23 13:56:13,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 347. [2021-11-23 13:56:13,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 232 states have (on average 1.6336206896551724) internal successors, (379), 346 states have internal predecessors, (379), 0 states have call successors, (0), 0 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 13:56:13,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 379 transitions. [2021-11-23 13:56:13,575 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 379 transitions. Word has length 28 [2021-11-23 13:56:13,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:56:13,575 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 379 transitions. [2021-11-23 13:56:13,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:56:13,576 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 379 transitions. [2021-11-23 13:56:13,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 13:56:13,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:56:13,577 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 13:56:13,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-11-23 13:56:13,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:56:13,777 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr131ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:56:13,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:56:13,778 INFO L85 PathProgramCache]: Analyzing trace with hash 2092935800, now seen corresponding path program 1 times [2021-11-23 13:56:13,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:56:13,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79090891] [2021-11-23 13:56:13,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:56:13,779 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:56:13,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:56:13,780 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:56:13,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-11-23 13:56:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:56:13,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 13:56:13,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:56:16,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:56:16,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:56:25,679 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 13:56:25,680 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:56:25,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79090891] [2021-11-23 13:56:25,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79090891] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:56:25,680 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:56:25,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-23 13:56:25,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830413072] [2021-11-23 13:56:25,681 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:56:25,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 13:56:25,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:56:25,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 13:56:25,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=167, Unknown=4, NotChecked=0, Total=210 [2021-11-23 13:56:25,682 INFO L87 Difference]: Start difference. First operand 347 states and 379 transitions. Second operand has 15 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:56:29,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:56:29,788 INFO L93 Difference]: Finished difference Result 350 states and 381 transitions. [2021-11-23 13:56:29,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 13:56:29,788 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-23 13:56:29,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:56:29,789 INFO L225 Difference]: With dead ends: 350 [2021-11-23 13:56:29,789 INFO L226 Difference]: Without dead ends: 333 [2021-11-23 13:56:29,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=65, Invalid=272, Unknown=5, NotChecked=0, Total=342 [2021-11-23 13:56:29,790 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 13 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 425 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:56:29,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 2114 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 839 Invalid, 0 Unknown, 425 Unchecked, 1.8s Time] [2021-11-23 13:56:29,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-23 13:56:29,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2021-11-23 13:56:29,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 218 states have (on average 1.6697247706422018) internal successors, (364), 332 states have internal predecessors, (364), 0 states have call successors, (0), 0 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 13:56:29,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 364 transitions. [2021-11-23 13:56:29,795 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 364 transitions. Word has length 28 [2021-11-23 13:56:29,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:56:29,795 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 364 transitions. [2021-11-23 13:56:29,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:56:29,795 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 364 transitions. [2021-11-23 13:56:29,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 13:56:29,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:56:29,795 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] [2021-11-23 13:56:29,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-11-23 13:56:29,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:56:29,996 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:56:29,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:56:29,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1153736662, now seen corresponding path program 1 times [2021-11-23 13:56:29,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:56:29,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490399495] [2021-11-23 13:56:29,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:56:29,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:56:29,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:56:29,998 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:56:29,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-11-23 13:56:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:56:30,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-23 13:56:30,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:56:30,190 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-23 13:56:30,190 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 13 treesize of output 22 [2021-11-23 13:56:30,361 INFO L354 Elim1Store]: treesize reduction 9, result has 64.0 percent of original size [2021-11-23 13:56:30,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 46 [2021-11-23 13:56:30,611 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 13:56:30,739 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-23 13:56:30,739 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 40 treesize of output 30 [2021-11-23 13:56:30,836 INFO L354 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2021-11-23 13:56:30,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 35 [2021-11-23 13:56:31,081 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-23 13:56:31,082 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 62 treesize of output 53 [2021-11-23 13:56:31,360 INFO L354 Elim1Store]: treesize reduction 89, result has 39.0 percent of original size [2021-11-23 13:56:31,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 62 treesize of output 99 [2021-11-23 13:56:32,063 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-11-23 13:56:32,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 109 treesize of output 87 [2021-11-23 13:56:32,471 INFO L354 Elim1Store]: treesize reduction 116, result has 18.3 percent of original size [2021-11-23 13:56:32,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 160 treesize of output 114 [2021-11-23 13:56:33,007 INFO L354 Elim1Store]: treesize reduction 106, result has 31.6 percent of original size [2021-11-23 13:56:33,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 96 treesize of output 119 [2021-11-23 13:56:33,458 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-11-23 13:56:33,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 193 treesize of output 124 [2021-11-23 13:56:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:56:34,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:56:36,682 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_13| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_13| (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~adapter~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~adapter~0#1.base|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|)) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)))) (_ bv1 1)))) is different from false [2021-11-23 13:56:38,702 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_13| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_13| (_ bv1 1)) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |c_ULTIMATE.start_entry_point_~adapter~0#1.base|)))) (store .cse0 |c_ULTIMATE.start_entry_point_~adapter~0#1.base| (store (select .cse0 |c_ULTIMATE.start_entry_point_~adapter~0#1.base|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))))) (_ bv1 1)))) is different from false [2021-11-23 13:56:40,733 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_13| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_13| (_ bv1 1)) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |c_ULTIMATE.start_ldv_malloc_#res#1.base|)))) (store .cse0 |c_ULTIMATE.start_ldv_malloc_#res#1.base| (store (select .cse0 |c_ULTIMATE.start_ldv_malloc_#res#1.base|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))))) (_ bv1 1)))) is different from false [2021-11-23 13:56:42,786 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_13| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select (store (store |c_#valid| |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (_ bv1 1)) |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_13| (_ bv1 1)) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|)))) (store .cse0 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (store (select .cse0 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)))))) (_ bv1 1))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|)))))) is different from false [2021-11-23 13:56:49,346 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_13| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_225| (_ BitVec 32))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_ldv_malloc_#res#1.base_225| (_ bv1 1)))) (or (not (= (_ bv0 1) (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_ldv_malloc_#res#1.base_225|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store .cse0 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (_ bv1 1)) |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_13| (_ bv1 1)) (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|) |v_ULTIMATE.start_ldv_malloc_#res#1.base_225|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|)))) (store .cse1 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (store (select .cse1 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)))))))) (_ bv1 1))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (select .cse0 |c_ULTIMATE.start_entry_point_~client~0#1.base|))) (_ bv1 1))))))) is different from false [2021-11-23 13:56:49,885 INFO L354 Elim1Store]: treesize reduction 202, result has 46.4 percent of original size [2021-11-23 13:56:49,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 605 treesize of output 695 [2021-11-23 13:56:55,280 WARN L838 $PredicateComparison]: unable to prove that (and (or (forall ((|ULTIMATE.start_entry_point_~cfg~2#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~2#1.base| (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |ULTIMATE.start_entry_point_~cfg~2#1.offset| |ULTIMATE.start_entry_point_~fe~2#1.base|)))) (store .cse2 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse2 |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|) |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|))))) (store .cse1 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (store (select .cse1 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))) (or (= |c_ULTIMATE.start_entry_point_~client~0#1.base| .cse0) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| .cse0) (= .cse0 |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |c_ULTIMATE.start_entry_point_~client~0#1.base|)))) (= |c_ULTIMATE.start_entry_point_~client~0#1.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|)) (forall ((|ULTIMATE.start_entry_point_~cfg~2#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~2#1.base| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_225| (_ BitVec 32))) (let ((.cse3 (select (select (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |ULTIMATE.start_entry_point_~cfg~2#1.offset| |ULTIMATE.start_entry_point_~fe~2#1.base|)))) (store .cse5 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse5 |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|) |v_ULTIMATE.start_ldv_malloc_#res#1.base_225|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|))))) (store .cse4 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (store (select .cse4 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))) (or (= |c_ULTIMATE.start_entry_point_~client~0#1.base| .cse3) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_225| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_225| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_225| .cse3) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (= .cse3 |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |v_ULTIMATE.start_ldv_malloc_#res#1.base_225|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| .cse3))))) is different from false [2021-11-23 13:56:58,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:57:15,061 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 13:57:15,062 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:57:15,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490399495] [2021-11-23 13:57:15,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490399495] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:57:15,062 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:57:15,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 17] imperfect sequences [] total 32 [2021-11-23 13:57:15,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221734947] [2021-11-23 13:57:15,062 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:57:15,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-23 13:57:15,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:57:15,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-23 13:57:15,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=602, Unknown=8, NotChecked=330, Total=1056 [2021-11-23 13:57:15,063 INFO L87 Difference]: Start difference. First operand 333 states and 364 transitions. Second operand has 33 states, 32 states have (on average 1.75) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:57:17,478 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (= |c_ULTIMATE.start_entry_point_~client~0#1.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|))) (and (= |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_ldv_malloc_#res#1.base|)))) (_ bv1 1))) (exists ((v_arrayElimCell_106 (_ BitVec 1))) (let ((.cse0 (bvneg v_arrayElimCell_106))) (and (or (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| (_ bv0 32))) (bvneg .cse0))) (= |c_ULTIMATE.start_ldv_malloc_#res#1.base| (_ bv0 32))) (= (_ bv0 1) .cse0)))) (or (forall ((|ULTIMATE.start_entry_point_~cfg~2#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~2#1.base| (_ BitVec 32))) (let ((.cse1 (select (select (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |ULTIMATE.start_entry_point_~cfg~2#1.offset| |ULTIMATE.start_entry_point_~fe~2#1.base|)))) (store .cse3 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse3 |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|) |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|))))) (store .cse2 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (store (select .cse2 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))) (or (= |c_ULTIMATE.start_entry_point_~client~0#1.base| .cse1) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| .cse1) (= .cse1 |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |c_ULTIMATE.start_entry_point_~client~0#1.base|)))) .cse4) (forall ((|ULTIMATE.start_entry_point_~cfg~2#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~2#1.base| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_225| (_ BitVec 32))) (let ((.cse5 (select (select (let ((.cse6 (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |ULTIMATE.start_entry_point_~cfg~2#1.offset| |ULTIMATE.start_entry_point_~fe~2#1.base|)))) (store .cse7 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse7 |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|) |v_ULTIMATE.start_ldv_malloc_#res#1.base_225|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|))))) (store .cse6 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (store (select .cse6 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))) (or (= |c_ULTIMATE.start_entry_point_~client~0#1.base| .cse5) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_225| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_225| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_225| .cse5) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (= .cse5 |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |v_ULTIMATE.start_ldv_malloc_#res#1.base_225|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| .cse5)))) (not .cse4) (= (_ bv0 1) (select |c_#valid| (_ bv0 32))) (not (= |c_ULTIMATE.start_entry_point_~client~0#1.base| |c_ULTIMATE.start_ldv_malloc_#res#1.base|)))) is different from false [2021-11-23 13:57:19,555 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (= |c_ULTIMATE.start_entry_point_~client~0#1.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|))) (and (= |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)) (or (forall ((|ULTIMATE.start_entry_point_~cfg~2#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~2#1.base| (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |ULTIMATE.start_entry_point_~cfg~2#1.offset| |ULTIMATE.start_entry_point_~fe~2#1.base|)))) (store .cse2 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse2 |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|) |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|))))) (store .cse1 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (store (select .cse1 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))) (or (= |c_ULTIMATE.start_entry_point_~client~0#1.base| .cse0) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| .cse0) (= .cse0 |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |c_ULTIMATE.start_entry_point_~client~0#1.base|)))) .cse3) (forall ((|ULTIMATE.start_entry_point_~cfg~2#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~2#1.base| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_225| (_ BitVec 32))) (let ((.cse4 (select (select (let ((.cse5 (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |ULTIMATE.start_entry_point_~cfg~2#1.offset| |ULTIMATE.start_entry_point_~fe~2#1.base|)))) (store .cse6 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse6 |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|) |v_ULTIMATE.start_ldv_malloc_#res#1.base_225|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|))))) (store .cse5 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (store (select .cse5 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))) (or (= |c_ULTIMATE.start_entry_point_~client~0#1.base| .cse4) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_225| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_225| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_225| .cse4) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (= .cse4 |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |v_ULTIMATE.start_ldv_malloc_#res#1.base_225|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| .cse4)))) (not .cse3))) is different from false [2021-11-23 13:57:37,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:57:37,792 INFO L93 Difference]: Finished difference Result 478 states and 525 transitions. [2021-11-23 13:57:37,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-23 13:57:37,793 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.75) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-23 13:57:37,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:57:37,794 INFO L225 Difference]: With dead ends: 478 [2021-11-23 13:57:37,794 INFO L226 Difference]: Without dead ends: 478 [2021-11-23 13:57:37,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 8 IntricatePredicates, 2 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 37.9s TimeCoverageRelationStatistics Valid=180, Invalid=964, Unknown=10, NotChecked=568, Total=1722 [2021-11-23 13:57:37,795 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 179 mSDsluCounter, 4326 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 4571 SdHoareTripleChecker+Invalid, 3690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2814 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:57:37,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 4571 Invalid, 3690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 866 Invalid, 0 Unknown, 2814 Unchecked, 3.3s Time] [2021-11-23 13:57:37,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-11-23 13:57:37,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 332. [2021-11-23 13:57:37,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 218 states have (on average 1.665137614678899) internal successors, (363), 331 states have internal predecessors, (363), 0 states have call successors, (0), 0 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 13:57:37,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 363 transitions. [2021-11-23 13:57:37,800 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 363 transitions. Word has length 29 [2021-11-23 13:57:37,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:57:37,801 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 363 transitions. [2021-11-23 13:57:37,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.75) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:57:37,801 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 363 transitions. [2021-11-23 13:57:37,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 13:57:37,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:57:37,801 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] [2021-11-23 13:57:37,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-11-23 13:57:38,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:57:38,002 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-23 13:57:38,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:57:38,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1153736661, now seen corresponding path program 1 times [2021-11-23 13:57:38,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:57:38,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451184472] [2021-11-23 13:57:38,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:57:38,004 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:57:38,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:57:38,005 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:57:38,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-11-23 13:57:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:57:38,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-23 13:57:38,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:57:38,187 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 13:57:38,276 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 13:57:38,276 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 13:57:38,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 13:57:38,483 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 13:57:38,499 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 13:57:38,689 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-23 13:57:38,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 31 [2021-11-23 13:57:38,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 13:57:39,025 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-23 13:57:39,025 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 95 treesize of output 65 [2021-11-23 13:57:39,053 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 13:57:39,054 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 92 treesize of output 87 [2021-11-23 13:57:39,293 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-11-23 13:57:39,293 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 1 case distinctions, treesize of input 16 treesize of output 26 [2021-11-23 13:57:39,359 INFO L354 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2021-11-23 13:57:39,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 36 [2021-11-23 13:57:39,899 INFO L354 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2021-11-23 13:57:39,900 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 3 case distinctions, treesize of input 109 treesize of output 82 [2021-11-23 13:57:39,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:57:39,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 treesize of output 20 [2021-11-23 13:57:40,354 INFO L354 Elim1Store]: treesize reduction 26, result has 46.9 percent of original size [2021-11-23 13:57:40,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 66 [2021-11-23 13:57:40,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 13:57:41,035 INFO L354 Elim1Store]: treesize reduction 110, result has 17.9 percent of original size [2021-11-23 13:57:41,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 68 [2021-11-23 13:57:41,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:57:41,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-23 13:57:41,547 INFO L354 Elim1Store]: treesize reduction 228, result has 12.6 percent of original size [2021-11-23 13:57:41,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 172 treesize of output 112 [2021-11-23 13:57:41,602 INFO L354 Elim1Store]: treesize reduction 88, result has 16.2 percent of original size [2021-11-23 13:57:41,602 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 3 case distinctions, treesize of input 162 treesize of output 155 [2021-11-23 13:57:42,069 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:57:42,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-23 13:57:42,577 INFO L354 Elim1Store]: treesize reduction 148, result has 0.7 percent of original size [2021-11-23 13:57:42,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 174 treesize of output 84 [2021-11-23 13:57:42,591 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-23 13:57:42,591 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 41 [2021-11-23 13:57:43,022 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 13:57:43,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:58:16,976 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_14| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|))))) (and (forall ((|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_ldv_malloc_~size#1| (_ BitVec 32))) (let ((.cse1 (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~client~0#1.base|) .cse1 |ULTIMATE.start_entry_point_~adapter~0#1.offset|)))) (store .cse0 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (store (select .cse0 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.offset|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)) (select (store (store |c_#length| |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| |ULTIMATE.start_ldv_malloc_~size#1|) |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_14| (_ bv1 32)) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base|) .cse1 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|)))) (store .cse2 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (store (select .cse2 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))))) (forall ((|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32))) (let ((.cse3 (select (select (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |ULTIMATE.start_entry_point_~adapter~0#1.offset|)))) (store .cse4 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (store (select .cse4 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.offset|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))) (bvule .cse3 (bvadd (_ bv4 32) .cse3))))) (not (bvult |c_#StackHeapBarrier| |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_14|)))) is different from false [2021-11-23 13:58:43,561 INFO L354 Elim1Store]: treesize reduction 28, result has 42.9 percent of original size [2021-11-23 13:58:43,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 372 treesize of output 384 [2021-11-23 13:58:50,719 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_14| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_234| (_ BitVec 32))) (or (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (not (bvult |c_#StackHeapBarrier| |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_14|)) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| |v_ULTIMATE.start_ldv_malloc_#res#1.base_234|) (and (forall ((v_prenex_2 (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~2#1.offset| (_ BitVec 32)) (v_prenex_1 (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |c_ULTIMATE.start_entry_point_~cfg~2#1.offset| |ULTIMATE.start_entry_point_~fe~2#1.offset|)))) (store .cse2 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse2 |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|) v_prenex_2) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) v_prenex_1))))) (store .cse1 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (store (select .cse1 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|) v_prenex_1 |#funAddr~master_xfer.offset|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_subst_5 (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_ldv_malloc_~size#1| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~addr~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~2#1.offset| (_ BitVec 32))) (let ((.cse5 (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)) (.cse6 (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |c_ULTIMATE.start_entry_point_~cfg~2#1.offset| |ULTIMATE.start_entry_point_~fe~2#1.offset|)))) (store .cse4 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse4 |c_ULTIMATE.start_entry_point_~client~0#1.base|) .cse5 |ULTIMATE.start_entry_point_~addr~0#1.offset|) .cse6 |ULTIMATE.start_entry_point_~adapter~0#1.offset|))))) (store .cse3 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (store (select .cse3 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.offset|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)) (select (store (store (store |c_#length| |v_ULTIMATE.start_ldv_malloc_#res#1.base_234| |ULTIMATE.start_ldv_malloc_~size#1|) |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| v_subst_5) |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_14| (_ bv1 32)) (select (select (let ((.cse7 (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |c_ULTIMATE.start_entry_point_~cfg~2#1.offset| |c_ULTIMATE.start_entry_point_~fe~2#1.base|)))) (store .cse8 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse8 |c_ULTIMATE.start_entry_point_~client~0#1.base|) .cse5 |v_ULTIMATE.start_ldv_malloc_#res#1.base_234|) .cse6 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|))))) (store .cse7 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (store (select .cse7 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)))))) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_234| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|))) is different from false [2021-11-23 13:58:59,503 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_14| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_234| (_ BitVec 32))) (or (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (and (forall ((v_prenex_2 (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~2#1.offset| (_ BitVec 32)) (v_prenex_1 (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |c_ULTIMATE.start_entry_point_~cfg~2#1.offset| |ULTIMATE.start_entry_point_~fe~2#1.offset|)))) (store .cse2 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse2 |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|) v_prenex_2) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) v_prenex_1))))) (store .cse1 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (store (select .cse1 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|) v_prenex_1 |#funAddr~master_xfer.offset|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_subst_5 (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_ldv_malloc_~size#1| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~addr~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~2#1.offset| (_ BitVec 32))) (let ((.cse5 (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)) (.cse6 (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |c_ULTIMATE.start_entry_point_~cfg~2#1.offset| |ULTIMATE.start_entry_point_~fe~2#1.offset|)))) (store .cse4 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse4 |c_ULTIMATE.start_entry_point_~client~0#1.base|) .cse5 |ULTIMATE.start_entry_point_~addr~0#1.offset|) .cse6 |ULTIMATE.start_entry_point_~adapter~0#1.offset|))))) (store .cse3 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (store (select .cse3 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.offset|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)) (select (store (store (store |c_#length| |v_ULTIMATE.start_ldv_malloc_#res#1.base_234| |ULTIMATE.start_ldv_malloc_~size#1|) |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| v_subst_5) |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_14| (_ bv1 32)) (select (select (let ((.cse7 (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |c_ULTIMATE.start_entry_point_~cfg~2#1.offset| |c_ULTIMATE.start_ldv_malloc_#res#1.base|)))) (store .cse8 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse8 |c_ULTIMATE.start_entry_point_~client~0#1.base|) .cse5 |v_ULTIMATE.start_ldv_malloc_#res#1.base_234|) .cse6 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|))))) (store .cse7 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (store (select .cse7 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)))))) (not (bvult |c_#StackHeapBarrier| |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_14|)) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| |v_ULTIMATE.start_ldv_malloc_#res#1.base_234|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_234| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|))) is different from false [2021-11-23 13:59:07,785 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_14| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_234| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_236| (_ BitVec 32))) (or (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_ldv_malloc_#res#1.base_236|)))) (and (forall ((v_subst_6 (_ BitVec 32)) (v_subst_5 (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_ldv_malloc_~size#1| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~addr~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~2#1.offset| (_ BitVec 32))) (let ((.cse2 (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)) (.cse3 (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |c_ULTIMATE.start_entry_point_~cfg~2#1.offset| |ULTIMATE.start_entry_point_~fe~2#1.offset|)))) (store .cse1 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse1 |c_ULTIMATE.start_entry_point_~client~0#1.base|) .cse2 |ULTIMATE.start_entry_point_~addr~0#1.offset|) .cse3 |ULTIMATE.start_entry_point_~adapter~0#1.offset|))))) (store .cse0 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (store (select .cse0 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.offset|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)) (select (store (store (store (store |c_#length| |v_ULTIMATE.start_ldv_malloc_#res#1.base_236| |ULTIMATE.start_ldv_malloc_~size#1|) |v_ULTIMATE.start_ldv_malloc_#res#1.base_234| v_subst_6) |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| v_subst_5) |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_14| (_ bv1 32)) (select (select (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |c_ULTIMATE.start_entry_point_~cfg~2#1.offset| |v_ULTIMATE.start_ldv_malloc_#res#1.base_236|)))) (store .cse5 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse5 |c_ULTIMATE.start_entry_point_~client~0#1.base|) .cse2 |v_ULTIMATE.start_ldv_malloc_#res#1.base_234|) .cse3 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|))))) (store .cse4 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (store (select .cse4 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))))) (forall ((v_prenex_2 (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~2#1.offset| (_ BitVec 32)) (v_prenex_1 (_ BitVec 32))) (let ((.cse6 (select (select (let ((.cse7 (let ((.cse8 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |c_ULTIMATE.start_entry_point_~cfg~2#1.offset| |ULTIMATE.start_entry_point_~fe~2#1.offset|)))) (store .cse8 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse8 |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|) v_prenex_2) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) v_prenex_1))))) (store .cse7 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (store (select .cse7 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|) v_prenex_1 |#funAddr~master_xfer.offset|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))) (bvule .cse6 (bvadd (_ bv4 32) .cse6))))) (not (bvult |c_#StackHeapBarrier| |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_14|)) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| |v_ULTIMATE.start_ldv_malloc_#res#1.base_234|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_234| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|))) is different from false [2021-11-23 13:59:13,007 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:59:13,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451184472] [2021-11-23 13:59:13,008 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 13:59:13,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [961609724] [2021-11-23 13:59:13,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:59:13,009 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 13:59:13,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/cvc4 [2021-11-23 13:59:13,010 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 13:59:13,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/cvc4 --incremental --print-success --lang smt (56)] Waiting until timeout for monitored process [2021-11-23 13:59:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:59:13,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-23 13:59:13,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:59:13,407 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 13:59:14,194 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 13:59:14,195 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 13:59:14,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 13:59:14,824 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 13:59:14,841 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 13:59:15,247 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 13:59:15,248 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 1 case distinctions, treesize of input 45 treesize of output 47 [2021-11-23 13:59:15,360 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-23 13:59:15,360 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 39 treesize of output 56 [2021-11-23 13:59:16,733 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-23 13:59:16,734 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 122 treesize of output 92 [2021-11-23 13:59:16,768 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-23 13:59:16,768 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 103 treesize of output 98 [2021-11-23 13:59:17,482 INFO L354 Elim1Store]: treesize reduction 77, result has 36.9 percent of original size [2021-11-23 13:59:17,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 78 treesize of output 109 [2021-11-23 13:59:17,520 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:59:17,520 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 1 case distinctions, treesize of input 101 treesize of output 103 [2021-11-23 13:59:19,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:59:19,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 treesize of output 20 [2021-11-23 13:59:19,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:59:19,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 115 treesize of output 98 [2021-11-23 13:59:20,924 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-11-23 13:59:20,924 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 1 case distinctions, treesize of input 16 treesize of output 26 [2021-11-23 13:59:21,132 INFO L354 Elim1Store]: treesize reduction 120, result has 32.2 percent of original size [2021-11-23 13:59:21,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 116 treesize of output 157 [2021-11-23 13:59:24,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:59:24,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-23 13:59:24,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:59:24,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 162 treesize of output 141 [2021-11-23 13:59:25,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:59:25,588 INFO L354 Elim1Store]: treesize reduction 78, result has 17.9 percent of original size [2021-11-23 13:59:25,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 269 treesize of output 200 [2021-11-23 13:59:25,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:59:25,682 INFO L354 Elim1Store]: treesize reduction 78, result has 17.9 percent of original size [2021-11-23 13:59:25,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 259 treesize of output 252 [2021-11-23 13:59:27,154 INFO L354 Elim1Store]: treesize reduction 100, result has 17.4 percent of original size [2021-11-23 13:59:27,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 206 treesize of output 206 [2021-11-23 13:59:27,208 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:59:27,209 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 38 treesize of output 40 [2021-11-23 13:59:28,002 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 13:59:28,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 108 treesize of output 87 [2021-11-23 13:59:28,019 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 13:59:28,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 45 [2021-11-23 13:59:28,927 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 13:59:28,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:00:18,178 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_15| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_15|))) (and (forall ((|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32))) (let ((.cse1 (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~client~0#1.base|) .cse1 |ULTIMATE.start_entry_point_~adapter~0#1.offset|)))) (store .cse0 |c_ULTIMATE.start_ldv_malloc_#res#1.base| (store (select .cse0 |c_ULTIMATE.start_ldv_malloc_#res#1.base|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.offset|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)) (select (store |c_#length| |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_15| (_ bv1 32)) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base|) .cse1 |c_ULTIMATE.start_ldv_malloc_#res#1.base|)))) (store .cse2 |c_ULTIMATE.start_ldv_malloc_#res#1.base| (store (select .cse2 |c_ULTIMATE.start_ldv_malloc_#res#1.base|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))))) (forall ((|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32))) (let ((.cse3 (select (select (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |ULTIMATE.start_entry_point_~adapter~0#1.offset|)))) (store .cse4 |c_ULTIMATE.start_ldv_malloc_#res#1.base| (store (select .cse4 |c_ULTIMATE.start_ldv_malloc_#res#1.base|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.offset|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))) (bvule .cse3 (bvadd (_ bv4 32) .cse3))))) (not (bvult |c_#StackHeapBarrier| |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_15|)))) is different from false [2021-11-23 14:03:33,347 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 14:03:33,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000730570] [2021-11-23 14:03:33,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:03:33,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:03:33,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:03:33,362 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:03:33,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731dfb35-f0f5-40f6-b272-ef46f2b7c9bf/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-11-23 14:03:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:03:33,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-23 14:03:33,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:03:33,483 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 14:03:33,518 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 14:03:33,518 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 14:03:34,646 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 14:03:34,661 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 14:03:35,267 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 14:03:35,267 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 90 treesize of output 68 [2021-11-23 14:03:35,293 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-23 14:03:35,293 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 67 treesize of output 57 [2021-11-23 14:03:36,844 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 14:03:36,845 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 1 case distinctions, treesize of input 46 treesize of output 48 [2021-11-23 14:03:36,890 INFO L354 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2021-11-23 14:03:36,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 51 [2021-11-23 14:03:41,837 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-23 14:03:41,838 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 100 treesize of output 87 [2021-11-23 14:03:41,867 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-23 14:03:41,867 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 87 treesize of output 82 [2021-11-23 14:03:43,252 INFO L354 Elim1Store]: treesize reduction 42, result has 44.0 percent of original size [2021-11-23 14:03:43,253 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 46 treesize of output 67 [2021-11-23 14:03:43,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 14:03:45,974 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-23 14:03:45,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-23 14:03:45,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 14:03:45,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 78 treesize of output 65 [2021-11-23 14:03:47,700 INFO L354 Elim1Store]: treesize reduction 88, result has 16.2 percent of original size [2021-11-23 14:03:47,701 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 3 case distinctions, treesize of input 162 treesize of output 119 [2021-11-23 14:03:47,762 INFO L354 Elim1Store]: treesize reduction 88, result has 16.2 percent of original size [2021-11-23 14:03:47,763 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 3 case distinctions, treesize of input 152 treesize of output 145 [2021-11-23 14:03:49,947 INFO L354 Elim1Store]: treesize reduction 12, result has 65.7 percent of original size [2021-11-23 14:03:49,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 96 [2021-11-23 14:03:50,012 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 14:03:50,012 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 38 treesize of output 40 [2021-11-23 14:03:51,605 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-23 14:03:51,605 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 120 treesize of output 67 [2021-11-23 14:03:51,621 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-23 14:03:51,622 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 43 [2021-11-23 14:03:53,117 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 14:03:53,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:05:17,936 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_16| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_16|))) (and (forall ((|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32))) (let ((.cse1 (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~client~0#1.base|) .cse1 |ULTIMATE.start_entry_point_~adapter~0#1.offset|)))) (store .cse0 |c_ULTIMATE.start_ldv_malloc_#res#1.base| (store (select .cse0 |c_ULTIMATE.start_ldv_malloc_#res#1.base|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.offset|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)) (select (store |c_#length| |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_16| (_ bv1 32)) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base|) .cse1 |c_ULTIMATE.start_ldv_malloc_#res#1.base|)))) (store .cse2 |c_ULTIMATE.start_ldv_malloc_#res#1.base| (store (select .cse2 |c_ULTIMATE.start_ldv_malloc_#res#1.base|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))))) (forall ((|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32))) (let ((.cse3 (select (select (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |ULTIMATE.start_entry_point_~adapter~0#1.offset|)))) (store .cse4 |c_ULTIMATE.start_ldv_malloc_#res#1.base| (store (select .cse4 |c_ULTIMATE.start_ldv_malloc_#res#1.base|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.offset|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))) (bvule .cse3 (bvadd (_ bv4 32) .cse3))))))) is different from false