./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU --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 a2f43006c9a8080eee594d7c3e874c7ea5bb3a923f26b30531e1d07ef5cff7d9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:57:49,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:57:49,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:57:50,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:57:50,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:57:50,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:57:50,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:57:50,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:57:50,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:57:50,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:57:50,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:57:50,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:57:50,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:57:50,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:57:50,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:57:50,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:57:50,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:57:50,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:57:50,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:57:50,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:57:50,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:57:50,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:57:50,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:57:50,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:57:50,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:57:50,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:57:50,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:57:50,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:57:50,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:57:50,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:57:50,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:57:50,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:57:50,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:57:50,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:57:50,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:57:50,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:57:50,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:57:50,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:57:50,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:57:50,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:57:50,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:57:50,155 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-02 22:57:50,202 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:57:50,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:57:50,203 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:57:50,203 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:57:50,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:57:50,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:57:50,205 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:57:50,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:57:50,206 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:57:50,206 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:57:50,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:57:50,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:57:50,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:57:50,209 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:57:50,210 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:57:50,210 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:57:50,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:57:50,210 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:57:50,211 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:57:50,211 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:57:50,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:57:50,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:57:50,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:57:50,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:57:50,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:57:50,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:57:50,214 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:57:50,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:57:50,215 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:57:50,217 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_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a2f43006c9a8080eee594d7c3e874c7ea5bb3a923f26b30531e1d07ef5cff7d9 [2021-11-02 22:57:50,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:57:50,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:57:50,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:57:50,586 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:57:50,587 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:57:50,588 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i [2021-11-02 22:57:50,685 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/data/0260cdc55/528ee91694344b03854d10e55bf3c80d/FLAG80189119c [2021-11-02 22:57:51,497 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:57:51,498 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i [2021-11-02 22:57:51,516 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/data/0260cdc55/528ee91694344b03854d10e55bf3c80d/FLAG80189119c [2021-11-02 22:57:51,605 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/data/0260cdc55/528ee91694344b03854d10e55bf3c80d [2021-11-02 22:57:51,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:57:51,609 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:57:51,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:57:51,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:57:51,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:57:51,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:57:51" (1/1) ... [2021-11-02 22:57:51,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@563d82f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:51, skipping insertion in model container [2021-11-02 22:57:51,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:57:51" (1/1) ... [2021-11-02 22:57:51,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:57:51,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:57:52,155 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i[33021,33034] [2021-11-02 22:57:52,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:57:52,281 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) [2021-11-02 22:57:52,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4e5fb5c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:52, skipping insertion in model container [2021-11-02 22:57:52,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:57:52,284 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-02 22:57:52,288 INFO L168 Benchmark]: Toolchain (without parser) took 675.71 ms. Allocated memory is still 109.1 MB. Free memory was 79.5 MB in the beginning and 63.4 MB in the end (delta: 16.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-02 22:57:52,290 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 109.1 MB. Free memory was 81.1 MB in the beginning and 80.9 MB in the end (delta: 167.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:57:52,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 672.98 ms. Allocated memory is still 109.1 MB. Free memory was 79.1 MB in the beginning and 63.6 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-02 22:57:52,295 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 109.1 MB. Free memory was 81.1 MB in the beginning and 80.9 MB in the end (delta: 167.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 672.98 ms. Allocated memory is still 109.1 MB. Free memory was 79.1 MB in the beginning and 63.6 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: 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_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU --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 a2f43006c9a8080eee594d7c3e874c7ea5bb3a923f26b30531e1d07ef5cff7d9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:57:55,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:57:55,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:57:55,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:57:55,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:57:55,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:57:55,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:57:55,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:57:55,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:57:55,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:57:55,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:57:55,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:57:55,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:57:55,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:57:55,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:57:55,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:57:55,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:57:55,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:57:55,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:57:55,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:57:55,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:57:55,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:57:55,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:57:55,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:57:55,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:57:55,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:57:55,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:57:55,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:57:55,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:57:55,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:57:55,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:57:55,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:57:55,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:57:55,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:57:55,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:57:55,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:57:55,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:57:55,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:57:55,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:57:55,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:57:55,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:57:55,146 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-02 22:57:55,228 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:57:55,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:57:55,234 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:57:55,234 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:57:55,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:57:55,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:57:55,238 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:57:55,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:57:55,239 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:57:55,239 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:57:55,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:57:55,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:57:55,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:57:55,242 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:57:55,242 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:57:55,243 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:57:55,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:57:55,243 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:57:55,244 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-02 22:57:55,244 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-02 22:57:55,245 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:57:55,245 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:57:55,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:57:55,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:57:55,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:57:55,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:57:55,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:57:55,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:57:55,248 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-02 22:57:55,248 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-02 22:57:55,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:57:55,249 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-02 22:57:55,249 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_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a2f43006c9a8080eee594d7c3e874c7ea5bb3a923f26b30531e1d07ef5cff7d9 [2021-11-02 22:57:55,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:57:55,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:57:55,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:57:55,767 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:57:55,768 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:57:55,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i [2021-11-02 22:57:55,870 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/data/bada5ba24/90637ce2ac30433f82eec8cce564d05c/FLAG47298f53e [2021-11-02 22:57:56,636 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:57:56,643 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i [2021-11-02 22:57:56,674 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/data/bada5ba24/90637ce2ac30433f82eec8cce564d05c/FLAG47298f53e [2021-11-02 22:57:56,846 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/data/bada5ba24/90637ce2ac30433f82eec8cce564d05c [2021-11-02 22:57:56,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:57:56,854 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:57:56,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:57:56,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:57:56,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:57:56,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:57:56" (1/1) ... [2021-11-02 22:57:56,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d4a1735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:56, skipping insertion in model container [2021-11-02 22:57:56,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:57:56" (1/1) ... [2021-11-02 22:57:56,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:57:56,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:57:57,649 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i[33021,33034] [2021-11-02 22:57:57,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:57:57,834 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-02 22:57:57,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:57:57,893 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i[33021,33034] [2021-11-02 22:57:57,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:57:58,001 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:57:58,063 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i[33021,33034] [2021-11-02 22:57:58,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:57:58,216 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:57:58,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:58 WrapperNode [2021-11-02 22:57:58,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:57:58,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:57:58,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:57:58,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:57:58,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:58" (1/1) ... [2021-11-02 22:57:58,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:58" (1/1) ... [2021-11-02 22:57:58,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:58" (1/1) ... [2021-11-02 22:57:58,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:58" (1/1) ... [2021-11-02 22:57:58,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:58" (1/1) ... [2021-11-02 22:57:58,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:58" (1/1) ... [2021-11-02 22:57:58,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:58" (1/1) ... [2021-11-02 22:57:58,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:57:58,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:57:58,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:57:58,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:57:58,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:58" (1/1) ... [2021-11-02 22:57:58,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:57:58,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:58,463 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:58,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:57:58,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-02 22:57:58,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:57:58,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 22:57:58,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-02 22:57:58,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-02 22:57:58,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-02 22:57:58,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-02 22:57:58,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-02 22:57:58,528 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-02 22:57:58,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-02 22:57:58,528 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-02 22:57:58,529 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-02 22:57:58,529 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-02 22:57:58,529 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-02 22:57:58,529 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-02 22:57:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-02 22:57:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-02 22:57:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-02 22:57:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-02 22:57:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-02 22:57:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-02 22:57:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-02 22:57:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-02 22:57:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-02 22:57:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-02 22:57:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-02 22:57:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-02 22:57:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-02 22:57:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-02 22:57:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-02 22:57:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-02 22:57:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-02 22:57:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-02 22:57:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-02 22:57:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-02 22:57:58,534 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-02 22:57:58,534 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-02 22:57:58,535 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-02 22:57:58,536 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-02 22:57:58,536 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-02 22:57:58,537 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-02 22:57:58,537 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-02 22:57:58,537 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-02 22:57:58,538 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-02 22:57:58,538 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-02 22:57:58,538 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-02 22:57:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-02 22:57:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-02 22:57:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-02 22:57:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-02 22:57:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-02 22:57:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-02 22:57:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-02 22:57:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-02 22:57:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-02 22:57:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-02 22:57:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-02 22:57:58,542 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-02 22:57:58,542 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-02 22:57:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-02 22:57:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-02 22:57:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-02 22:57:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-02 22:57:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-02 22:57:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-02 22:57:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-02 22:57:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-02 22:57:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-02 22:57:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-02 22:57:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-02 22:57:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-02 22:57:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-02 22:57:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-02 22:57:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-02 22:57:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-02 22:57:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-02 22:57:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-02 22:57:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-02 22:57:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-02 22:57:58,551 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-02 22:57:58,551 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-02 22:57:58,551 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-02 22:57:58,551 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-02 22:57:58,551 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-02 22:57:58,552 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-02 22:57:58,552 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-02 22:57:58,552 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-02 22:57:58,552 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-02 22:57:58,552 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-02 22:57:58,553 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-02 22:57:58,553 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-02 22:57:58,553 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-02 22:57:58,553 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-02 22:57:58,553 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-02 22:57:58,554 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-02 22:57:58,554 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-02 22:57:58,554 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-02 22:57:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-02 22:57:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-02 22:57:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-02 22:57:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-02 22:57:58,555 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-02 22:57:58,556 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-02 22:57:58,556 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-02 22:57:58,556 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-02 22:57:58,556 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-02 22:57:58,556 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-02 22:57:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-02 22:57:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-02 22:57:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-02 22:57:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-02 22:57:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-02 22:57:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-02 22:57:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-02 22:57:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-02 22:57:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-02 22:57:58,559 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-02 22:57:58,559 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-02 22:57:58,559 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-02 22:57:58,560 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-02 22:57:58,561 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-02 22:57:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-02 22:57:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-02 22:57:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-02 22:57:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-02 22:57:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-02 22:57:58,568 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-02 22:57:58,568 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-02 22:57:58,568 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-02 22:57:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-02 22:57:58,577 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-02 22:57:58,577 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-02 22:57:58,577 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-02 22:57:58,577 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-02 22:57:58,578 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-02 22:57:58,578 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-02 22:57:58,578 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-02 22:57:58,578 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-02 22:57:58,578 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-02 22:57:58,579 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-02 22:57:58,579 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-02 22:57:58,579 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-02 22:57:58,579 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-02 22:57:58,579 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-02 22:57:58,579 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-02 22:57:58,580 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-02 22:57:58,580 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-02 22:57:58,580 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-02 22:57:58,580 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-02 22:57:58,580 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-02 22:57:58,581 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-02 22:57:58,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-02 22:57:58,581 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-02 22:57:58,581 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-02 22:57:58,581 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-02 22:57:58,582 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-02 22:57:58,582 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-02 22:57:58,582 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-02 22:57:58,582 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-02 22:57:58,582 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-02 22:57:58,583 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-02 22:57:58,583 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-02 22:57:58,583 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-02 22:57:58,583 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-02 22:57:58,583 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-02 22:57:58,584 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-02 22:57:58,584 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-02 22:57:58,584 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-02 22:57:58,584 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-02 22:57:58,585 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-02 22:57:58,585 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-02 22:57:58,585 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-02 22:57:58,585 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-02 22:57:58,585 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-02 22:57:58,586 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-02 22:57:58,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:57:58,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-02 22:57:58,586 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-02 22:57:58,586 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-02 22:57:58,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:57:58,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-02 22:57:58,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-02 22:57:58,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:57:58,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:57:58,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-02 22:57:58,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:57:58,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-02 22:57:58,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-02 22:57:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-02 22:57:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:57:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 22:57:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-02 22:57:59,326 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 22:58:02,928 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:58:02,936 INFO L299 CfgBuilder]: Removed 31 assume(true) statements. [2021-11-02 22:58:02,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:58:02 BoogieIcfgContainer [2021-11-02 22:58:02,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:58:02,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:58:02,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:58:02,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:58:02,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:57:56" (1/3) ... [2021-11-02 22:58:02,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7387cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:58:02, skipping insertion in model container [2021-11-02 22:58:02,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:58" (2/3) ... [2021-11-02 22:58:02,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7387cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:58:02, skipping insertion in model container [2021-11-02 22:58:02,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:58:02" (3/3) ... [2021-11-02 22:58:02,956 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test1-1.i [2021-11-02 22:58:02,962 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:58:02,963 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 330 error locations. [2021-11-02 22:58:03,013 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:58:03,020 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 [2021-11-02 22:58:03,020 INFO L340 AbstractCegarLoop]: Starting to check reachability of 330 error locations. [2021-11-02 22:58:03,061 INFO L276 IsEmpty]: Start isEmpty. Operand has 676 states, 327 states have (on average 2.223241590214067) internal successors, (727), 664 states have internal predecessors, (727), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-02 22:58:03,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 22:58:03,071 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:58:03,072 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:03,073 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-02 22:58:03,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:03,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1974779480, now seen corresponding path program 1 times [2021-11-02 22:58:03,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:58:03,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062819385] [2021-11-02 22:58:03,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:03,094 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:58:03,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:58:03,096 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:58:03,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-02 22:58:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:03,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-02 22:58:03,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:58:03,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:03,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:58:03,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:03,477 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:58:03,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062819385] [2021-11-02 22:58:03,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062819385] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:58:03,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:58:03,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 22:58:03,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967976821] [2021-11-02 22:58:03,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:58:03,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:58:03,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:58:03,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:58:03,511 INFO L87 Difference]: Start difference. First operand has 676 states, 327 states have (on average 2.223241590214067) internal successors, (727), 664 states have internal predecessors, (727), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:03,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:58:03,613 INFO L93 Difference]: Finished difference Result 667 states and 714 transitions. [2021-11-02 22:58:03,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:58:03,628 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-02 22:58:03,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:58:03,680 INFO L225 Difference]: With dead ends: 667 [2021-11-02 22:58:03,687 INFO L226 Difference]: Without dead ends: 664 [2021-11-02 22:58:03,690 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:58:03,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-11-02 22:58:03,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 664. [2021-11-02 22:58:03,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 322 states have (on average 2.111801242236025) internal successors, (680), 653 states have internal predecessors, (680), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-02 22:58:03,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 711 transitions. [2021-11-02 22:58:03,845 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 711 transitions. Word has length 9 [2021-11-02 22:58:03,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:58:03,846 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 711 transitions. [2021-11-02 22:58:03,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:03,846 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 711 transitions. [2021-11-02 22:58:03,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 22:58:03,847 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:58:03,847 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:03,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:58:04,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:58:04,066 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-02 22:58:04,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:04,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1974779418, now seen corresponding path program 1 times [2021-11-02 22:58:04,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:58:04,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913214730] [2021-11-02 22:58:04,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:04,068 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:58:04,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:58:04,070 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:58:04,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-02 22:58:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:04,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:58:04,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:58:04,413 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 [2021-11-02 22:58:04,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:04,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:58:04,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:04,476 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:58:04,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913214730] [2021-11-02 22:58:04,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913214730] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:58:04,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:58:04,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 22:58:04,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591860054] [2021-11-02 22:58:04,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:58:04,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:58:04,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:58:04,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:58:04,483 INFO L87 Difference]: Start difference. First operand 664 states and 711 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:06,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:58:06,339 INFO L93 Difference]: Finished difference Result 622 states and 670 transitions. [2021-11-02 22:58:06,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:58:06,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-02 22:58:06,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:58:06,347 INFO L225 Difference]: With dead ends: 622 [2021-11-02 22:58:06,347 INFO L226 Difference]: Without dead ends: 622 [2021-11-02 22:58:06,348 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:58:06,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-11-02 22:58:06,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 615. [2021-11-02 22:58:06,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 322 states have (on average 1.9596273291925466) internal successors, (631), 604 states have internal predecessors, (631), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-02 22:58:06,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 662 transitions. [2021-11-02 22:58:06,385 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 662 transitions. Word has length 9 [2021-11-02 22:58:06,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:58:06,386 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 662 transitions. [2021-11-02 22:58:06,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:06,386 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 662 transitions. [2021-11-02 22:58:06,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 22:58:06,387 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:58:06,387 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:06,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:58:06,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:58:06,607 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-02 22:58:06,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:06,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1974779417, now seen corresponding path program 1 times [2021-11-02 22:58:06,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:58:06,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161996836] [2021-11-02 22:58:06,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:06,609 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:58:06,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:58:06,611 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:58:06,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-02 22:58:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:06,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:58:06,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:58:06,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:58:06,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:06,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:58:07,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:07,074 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:58:07,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161996836] [2021-11-02 22:58:07,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161996836] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:58:07,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:58:07,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-02 22:58:07,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219320148] [2021-11-02 22:58:07,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:58:07,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:58:07,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:58:07,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:58:07,085 INFO L87 Difference]: Start difference. First operand 615 states and 662 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:10,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:58:10,676 INFO L93 Difference]: Finished difference Result 688 states and 739 transitions. [2021-11-02 22:58:10,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:58:10,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-02 22:58:10,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:58:10,683 INFO L225 Difference]: With dead ends: 688 [2021-11-02 22:58:10,683 INFO L226 Difference]: Without dead ends: 688 [2021-11-02 22:58:10,684 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:58:10,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-11-02 22:58:10,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 637. [2021-11-02 22:58:10,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 354 states have (on average 1.9406779661016949) internal successors, (687), 626 states have internal predecessors, (687), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-02 22:58:10,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 718 transitions. [2021-11-02 22:58:10,714 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 718 transitions. Word has length 9 [2021-11-02 22:58:10,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:58:10,715 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 718 transitions. [2021-11-02 22:58:10,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:10,716 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 718 transitions. [2021-11-02 22:58:10,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 22:58:10,716 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:58:10,717 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:10,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-02 22:58:10,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:58:10,935 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr322REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-02 22:58:10,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:10,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1087799300, now seen corresponding path program 1 times [2021-11-02 22:58:10,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:58:10,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356166455] [2021-11-02 22:58:10,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:10,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:58:10,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:58:10,938 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:58:10,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-02 22:58:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:11,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:58:11,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:58:11,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:11,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:58:11,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:11,302 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:58:11,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [356166455] [2021-11-02 22:58:11,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [356166455] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:58:11,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:58:11,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-02 22:58:11,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872594527] [2021-11-02 22:58:11,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:58:11,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:58:11,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:58:11,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:58:11,314 INFO L87 Difference]: Start difference. First operand 637 states and 718 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:11,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:58:11,500 INFO L93 Difference]: Finished difference Result 1219 states and 1361 transitions. [2021-11-02 22:58:11,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:58:11,502 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-02 22:58:11,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:58:11,512 INFO L225 Difference]: With dead ends: 1219 [2021-11-02 22:58:11,512 INFO L226 Difference]: Without dead ends: 1219 [2021-11-02 22:58:11,513 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:58:11,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2021-11-02 22:58:11,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 959. [2021-11-02 22:58:11,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 676 states have (on average 1.9585798816568047) internal successors, (1324), 945 states have internal predecessors, (1324), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-02 22:58:11,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1361 transitions. [2021-11-02 22:58:11,580 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1361 transitions. Word has length 10 [2021-11-02 22:58:11,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:58:11,581 INFO L470 AbstractCegarLoop]: Abstraction has 959 states and 1361 transitions. [2021-11-02 22:58:11,581 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:11,581 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1361 transitions. [2021-11-02 22:58:11,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-02 22:58:11,582 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:58:11,582 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:11,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:58:11,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:58:11,803 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-02 22:58:11,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:11,803 INFO L85 PathProgramCache]: Analyzing trace with hash 548999728, now seen corresponding path program 1 times [2021-11-02 22:58:11,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:58:11,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656859913] [2021-11-02 22:58:11,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:11,805 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:58:11,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:58:11,806 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:58:11,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-02 22:58:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:12,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:58:12,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:58:12,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:12,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:58:12,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:12,221 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:58:12,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656859913] [2021-11-02 22:58:12,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656859913] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:58:12,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:58:12,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-02 22:58:12,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385720546] [2021-11-02 22:58:12,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:58:12,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:58:12,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:58:12,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:58:12,224 INFO L87 Difference]: Start difference. First operand 959 states and 1361 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:12,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:58:12,282 INFO L93 Difference]: Finished difference Result 899 states and 1275 transitions. [2021-11-02 22:58:12,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:58:12,283 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-02 22:58:12,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:58:12,292 INFO L225 Difference]: With dead ends: 899 [2021-11-02 22:58:12,292 INFO L226 Difference]: Without dead ends: 899 [2021-11-02 22:58:12,293 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:58:12,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2021-11-02 22:58:12,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 899. [2021-11-02 22:58:12,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 640 states have (on average 1.934375) internal successors, (1238), 885 states have internal predecessors, (1238), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-02 22:58:12,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1275 transitions. [2021-11-02 22:58:12,330 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1275 transitions. Word has length 15 [2021-11-02 22:58:12,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:58:12,331 INFO L470 AbstractCegarLoop]: Abstraction has 899 states and 1275 transitions. [2021-11-02 22:58:12,331 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:12,332 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1275 transitions. [2021-11-02 22:58:12,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-02 22:58:12,333 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:58:12,333 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:12,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-02 22:58:12,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:58:12,550 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr28REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-02 22:58:12,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:12,551 INFO L85 PathProgramCache]: Analyzing trace with hash -692239478, now seen corresponding path program 1 times [2021-11-02 22:58:12,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:58:12,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826789248] [2021-11-02 22:58:12,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:12,552 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:58:12,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:58:12,553 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:58:12,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-02 22:58:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:12,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:58:12,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:58:12,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:12,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:58:12,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:12,971 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:58:12,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826789248] [2021-11-02 22:58:12,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [826789248] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:58:12,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:58:12,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-02 22:58:12,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768788417] [2021-11-02 22:58:12,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:58:12,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:58:12,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:58:12,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:58:12,974 INFO L87 Difference]: Start difference. First operand 899 states and 1275 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:13,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:58:13,086 INFO L93 Difference]: Finished difference Result 871 states and 1219 transitions. [2021-11-02 22:58:13,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:58:13,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-02 22:58:13,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:58:13,094 INFO L225 Difference]: With dead ends: 871 [2021-11-02 22:58:13,094 INFO L226 Difference]: Without dead ends: 871 [2021-11-02 22:58:13,095 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:58:13,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2021-11-02 22:58:13,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 869. [2021-11-02 22:58:13,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 624 states have (on average 1.891025641025641) internal successors, (1180), 855 states have internal predecessors, (1180), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-02 22:58:13,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1217 transitions. [2021-11-02 22:58:13,132 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1217 transitions. Word has length 17 [2021-11-02 22:58:13,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:58:13,132 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 1217 transitions. [2021-11-02 22:58:13,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:13,133 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1217 transitions. [2021-11-02 22:58:13,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 22:58:13,134 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:58:13,134 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:13,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:58:13,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:58:13,351 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr42REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-02 22:58:13,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:13,351 INFO L85 PathProgramCache]: Analyzing trace with hash 460749560, now seen corresponding path program 1 times [2021-11-02 22:58:13,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:58:13,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924373983] [2021-11-02 22:58:13,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:13,352 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:58:13,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:58:13,354 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:58:13,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-02 22:58:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:13,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:58:13,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:58:13,632 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 [2021-11-02 22:58:13,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:13,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:58:13,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:13,952 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:58:13,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924373983] [2021-11-02 22:58:13,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924373983] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:58:13,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:58:13,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 22:58:13,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309748328] [2021-11-02 22:58:13,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:58:13,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:58:13,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:58:13,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:58:13,954 INFO L87 Difference]: Start difference. First operand 869 states and 1217 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:15,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:58:15,704 INFO L93 Difference]: Finished difference Result 898 states and 1244 transitions. [2021-11-02 22:58:15,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:58:15,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-02 22:58:15,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:58:15,712 INFO L225 Difference]: With dead ends: 898 [2021-11-02 22:58:15,713 INFO L226 Difference]: Without dead ends: 898 [2021-11-02 22:58:15,713 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:58:15,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2021-11-02 22:58:15,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 865. [2021-11-02 22:58:15,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 624 states have (on average 1.8782051282051282) internal successors, (1172), 851 states have internal predecessors, (1172), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-02 22:58:15,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1209 transitions. [2021-11-02 22:58:15,758 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1209 transitions. Word has length 31 [2021-11-02 22:58:15,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:58:15,760 INFO L470 AbstractCegarLoop]: Abstraction has 865 states and 1209 transitions. [2021-11-02 22:58:15,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:15,760 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1209 transitions. [2021-11-02 22:58:15,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 22:58:15,761 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:58:15,762 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:15,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-02 22:58:15,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:58:15,977 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr43REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-02 22:58:15,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:15,977 INFO L85 PathProgramCache]: Analyzing trace with hash 460749561, now seen corresponding path program 1 times [2021-11-02 22:58:15,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:58:15,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941434851] [2021-11-02 22:58:15,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:15,978 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:58:15,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:58:15,980 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:58:16,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-02 22:58:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:16,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:58:16,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:58:16,313 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 [2021-11-02 22:58:16,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:16,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:58:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:17,337 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:58:17,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941434851] [2021-11-02 22:58:17,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941434851] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:58:17,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:58:17,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 22:58:17,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266758094] [2021-11-02 22:58:17,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:58:17,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:58:17,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:58:17,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:58:17,340 INFO L87 Difference]: Start difference. First operand 865 states and 1209 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:22,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:58:22,839 INFO L93 Difference]: Finished difference Result 945 states and 1262 transitions. [2021-11-02 22:58:22,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:58:22,841 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-02 22:58:22,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:58:22,849 INFO L225 Difference]: With dead ends: 945 [2021-11-02 22:58:22,849 INFO L226 Difference]: Without dead ends: 945 [2021-11-02 22:58:22,850 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:58:22,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2021-11-02 22:58:22,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 861. [2021-11-02 22:58:22,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 624 states have (on average 1.8653846153846154) internal successors, (1164), 847 states have internal predecessors, (1164), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-02 22:58:22,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1201 transitions. [2021-11-02 22:58:22,885 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1201 transitions. Word has length 31 [2021-11-02 22:58:22,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:58:22,885 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 1201 transitions. [2021-11-02 22:58:22,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:22,886 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1201 transitions. [2021-11-02 22:58:22,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-02 22:58:22,888 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:58:22,888 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:22,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-02 22:58:23,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:58:23,104 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-02 22:58:23,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:23,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1828330934, now seen corresponding path program 1 times [2021-11-02 22:58:23,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:58:23,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576455800] [2021-11-02 22:58:23,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:23,106 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:58:23,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:58:23,109 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:58:23,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-02 22:58:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:23,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:58:23,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:58:23,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:23,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:58:23,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:23,833 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:58:23,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576455800] [2021-11-02 22:58:23,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576455800] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:58:23,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:58:23,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 22:58:23,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011438826] [2021-11-02 22:58:23,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:58:23,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:58:23,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:58:23,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:58:23,837 INFO L87 Difference]: Start difference. First operand 861 states and 1201 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:23,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:58:23,913 INFO L93 Difference]: Finished difference Result 849 states and 1181 transitions. [2021-11-02 22:58:23,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:58:23,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-11-02 22:58:23,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:58:23,922 INFO L225 Difference]: With dead ends: 849 [2021-11-02 22:58:23,923 INFO L226 Difference]: Without dead ends: 849 [2021-11-02 22:58:23,923 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:58:23,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-11-02 22:58:23,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 849. [2021-11-02 22:58:23,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 612 states have (on average 1.869281045751634) internal successors, (1144), 835 states have internal predecessors, (1144), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-02 22:58:23,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1181 transitions. [2021-11-02 22:58:23,959 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1181 transitions. Word has length 46 [2021-11-02 22:58:23,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:58:23,960 INFO L470 AbstractCegarLoop]: Abstraction has 849 states and 1181 transitions. [2021-11-02 22:58:23,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:23,960 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1181 transitions. [2021-11-02 22:58:23,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 22:58:23,972 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:58:23,972 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:23,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-02 22:58:24,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:58:24,187 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-02 22:58:24,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:24,188 INFO L85 PathProgramCache]: Analyzing trace with hash -850731138, now seen corresponding path program 1 times [2021-11-02 22:58:24,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:58:24,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089057876] [2021-11-02 22:58:24,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:24,189 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:58:24,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:58:24,191 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:58:24,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-02 22:58:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:24,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:58:24,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:58:25,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:25,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:58:25,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:25,734 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:58:25,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089057876] [2021-11-02 22:58:25,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089057876] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:58:25,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:58:25,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 22:58:25,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741873213] [2021-11-02 22:58:25,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:58:25,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:58:25,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:58:25,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:58:25,737 INFO L87 Difference]: Start difference. First operand 849 states and 1181 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:25,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:58:25,843 INFO L93 Difference]: Finished difference Result 799 states and 1076 transitions. [2021-11-02 22:58:25,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:58:25,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-11-02 22:58:25,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:58:25,851 INFO L225 Difference]: With dead ends: 799 [2021-11-02 22:58:25,852 INFO L226 Difference]: Without dead ends: 799 [2021-11-02 22:58:25,852 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:58:25,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2021-11-02 22:58:25,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 799. [2021-11-02 22:58:25,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 562 states have (on average 1.8487544483985765) internal successors, (1039), 785 states have internal predecessors, (1039), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-02 22:58:25,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1076 transitions. [2021-11-02 22:58:25,882 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1076 transitions. Word has length 54 [2021-11-02 22:58:25,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:58:25,883 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 1076 transitions. [2021-11-02 22:58:25,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:25,884 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1076 transitions. [2021-11-02 22:58:25,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 22:58:25,885 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:58:25,885 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:25,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-02 22:58:26,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:58:26,099 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr61REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-02 22:58:26,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:26,100 INFO L85 PathProgramCache]: Analyzing trace with hash 363306019, now seen corresponding path program 1 times [2021-11-02 22:58:26,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:58:26,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430354652] [2021-11-02 22:58:26,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:26,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:58:26,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:58:26,103 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:58:26,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-02 22:58:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:26,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:58:26,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:58:26,824 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 [2021-11-02 22:58:26,835 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 [2021-11-02 22:58:27,762 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-02 22:58:27,763 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 27 treesize of output 29 [2021-11-02 22:58:27,772 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:58:27,773 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 26 treesize of output 22 [2021-11-02 22:58:27,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:27,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:58:33,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:33,337 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:58:33,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1430354652] [2021-11-02 22:58:33,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1430354652] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:58:33,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:58:33,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 22:58:33,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408349121] [2021-11-02 22:58:33,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:58:33,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:58:33,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:58:33,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-02 22:58:33,341 INFO L87 Difference]: Start difference. First operand 799 states and 1076 transitions. Second operand has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:43,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:58:43,634 INFO L93 Difference]: Finished difference Result 774 states and 1014 transitions. [2021-11-02 22:58:43,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:58:43,635 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-11-02 22:58:43,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:58:43,646 INFO L225 Difference]: With dead ends: 774 [2021-11-02 22:58:43,646 INFO L226 Difference]: Without dead ends: 774 [2021-11-02 22:58:43,647 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-02 22:58:43,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-11-02 22:58:43,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 729. [2021-11-02 22:58:43,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 530 states have (on average 1.6924528301886792) internal successors, (897), 715 states have internal predecessors, (897), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-02 22:58:43,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 934 transitions. [2021-11-02 22:58:43,676 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 934 transitions. Word has length 57 [2021-11-02 22:58:43,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:58:43,677 INFO L470 AbstractCegarLoop]: Abstraction has 729 states and 934 transitions. [2021-11-02 22:58:43,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:43,678 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 934 transitions. [2021-11-02 22:58:43,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 22:58:43,682 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:58:43,682 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:43,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-02 22:58:43,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:58:43,903 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr66REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-02 22:58:43,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:43,903 INFO L85 PathProgramCache]: Analyzing trace with hash -582487087, now seen corresponding path program 1 times [2021-11-02 22:58:43,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:58:43,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737075782] [2021-11-02 22:58:43,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:43,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:58:43,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:58:43,906 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:58:43,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-02 22:58:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:44,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:58:44,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:58:44,637 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 [2021-11-02 22:58:44,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-02 22:58:44,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-02 22:58:44,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:44,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:58:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:44,935 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:58:44,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737075782] [2021-11-02 22:58:44,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737075782] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:58:44,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:58:44,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 22:58:44,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736195212] [2021-11-02 22:58:44,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:58:44,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:58:44,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:58:44,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:58:44,937 INFO L87 Difference]: Start difference. First operand 729 states and 934 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:47,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:58:47,279 INFO L93 Difference]: Finished difference Result 728 states and 932 transitions. [2021-11-02 22:58:47,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:58:47,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-02 22:58:47,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:58:47,284 INFO L225 Difference]: With dead ends: 728 [2021-11-02 22:58:47,285 INFO L226 Difference]: Without dead ends: 728 [2021-11-02 22:58:47,285 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:58:47,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2021-11-02 22:58:47,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 728. [2021-11-02 22:58:47,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 530 states have (on average 1.6886792452830188) internal successors, (895), 714 states have internal predecessors, (895), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-02 22:58:47,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 932 transitions. [2021-11-02 22:58:47,310 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 932 transitions. Word has length 62 [2021-11-02 22:58:47,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:58:47,311 INFO L470 AbstractCegarLoop]: Abstraction has 728 states and 932 transitions. [2021-11-02 22:58:47,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:47,311 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 932 transitions. [2021-11-02 22:58:47,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 22:58:47,312 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:58:47,312 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:47,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-02 22:58:47,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:58:47,527 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr67REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-02 22:58:47,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:47,528 INFO L85 PathProgramCache]: Analyzing trace with hash -582487086, now seen corresponding path program 1 times [2021-11-02 22:58:47,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:58:47,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260461478] [2021-11-02 22:58:47,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:47,529 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:58:47,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:58:47,530 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:58:47,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-02 22:58:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:48,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:58:48,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:58:48,290 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 [2021-11-02 22:58:48,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-02 22:58:48,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-02 22:58:48,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-02 22:58:48,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-02 22:58:48,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:48,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:58:48,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:48,912 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:58:48,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260461478] [2021-11-02 22:58:48,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260461478] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:58:48,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:58:48,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-02 22:58:48,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243378951] [2021-11-02 22:58:48,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:58:48,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:58:48,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:58:48,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:58:48,915 INFO L87 Difference]: Start difference. First operand 728 states and 932 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:55,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:58:55,241 INFO L93 Difference]: Finished difference Result 727 states and 930 transitions. [2021-11-02 22:58:55,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:58:55,243 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-02 22:58:55,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:58:55,247 INFO L225 Difference]: With dead ends: 727 [2021-11-02 22:58:55,247 INFO L226 Difference]: Without dead ends: 727 [2021-11-02 22:58:55,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:58:55,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-11-02 22:58:55,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2021-11-02 22:58:55,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 528 states have (on average 1.691287878787879) internal successors, (893), 713 states have internal predecessors, (893), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-02 22:58:55,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 930 transitions. [2021-11-02 22:58:55,271 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 930 transitions. Word has length 62 [2021-11-02 22:58:55,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:58:55,272 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 930 transitions. [2021-11-02 22:58:55,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:58:55,272 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 930 transitions. [2021-11-02 22:58:55,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-02 22:58:55,273 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:58:55,274 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:55,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-02 22:58:55,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:58:55,487 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-02 22:58:55,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:55,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1992122424, now seen corresponding path program 1 times [2021-11-02 22:58:55,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:58:55,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785408085] [2021-11-02 22:58:55,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:55,488 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:58:55,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:58:55,489 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:58:55,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-02 22:58:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:56,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:58:56,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:58:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:56,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:58:56,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:56,555 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:58:56,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785408085] [2021-11-02 22:58:56,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785408085] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:58:56,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:58:56,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-02 22:58:56,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952733142] [2021-11-02 22:58:56,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:58:56,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:58:56,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:58:56,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:58:56,558 INFO L87 Difference]: Start difference. First operand 727 states and 930 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:58:56,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:58:56,672 INFO L93 Difference]: Finished difference Result 737 states and 944 transitions. [2021-11-02 22:58:56,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:58:56,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 70 [2021-11-02 22:58:56,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:58:56,680 INFO L225 Difference]: With dead ends: 737 [2021-11-02 22:58:56,680 INFO L226 Difference]: Without dead ends: 737 [2021-11-02 22:58:56,680 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:58:56,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2021-11-02 22:58:56,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 737. [2021-11-02 22:58:56,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 536 states have (on average 1.6884328358208955) internal successors, (905), 722 states have internal predecessors, (905), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-02 22:58:56,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 944 transitions. [2021-11-02 22:58:56,705 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 944 transitions. Word has length 70 [2021-11-02 22:58:56,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:58:56,706 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 944 transitions. [2021-11-02 22:58:56,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:58:56,706 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 944 transitions. [2021-11-02 22:58:56,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 22:58:56,707 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:58:56,708 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:56,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-02 22:58:56,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:58:56,922 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-02 22:58:56,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:56,923 INFO L85 PathProgramCache]: Analyzing trace with hash -616502664, now seen corresponding path program 1 times [2021-11-02 22:58:56,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:58:56,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579142825] [2021-11-02 22:58:56,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:56,924 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:58:56,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:58:56,926 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:58:56,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-02 22:58:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:57,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:58:57,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:58:57,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:57,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:58:58,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:58,276 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:58:58,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579142825] [2021-11-02 22:58:58,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579142825] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:58:58,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:58:58,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-02 22:58:58,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081925201] [2021-11-02 22:58:58,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:58:58,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:58:58,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:58:58,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:58:58,279 INFO L87 Difference]: Start difference. First operand 737 states and 944 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:58:58,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:58:58,789 INFO L93 Difference]: Finished difference Result 751 states and 964 transitions. [2021-11-02 22:58:58,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 22:58:58,790 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 72 [2021-11-02 22:58:58,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:58:58,795 INFO L225 Difference]: With dead ends: 751 [2021-11-02 22:58:58,795 INFO L226 Difference]: Without dead ends: 747 [2021-11-02 22:58:58,796 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:58:58,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-11-02 22:58:58,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 743. [2021-11-02 22:58:58,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 542 states have (on average 1.6845018450184501) internal successors, (913), 728 states have internal predecessors, (913), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-02 22:58:58,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 952 transitions. [2021-11-02 22:58:58,820 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 952 transitions. Word has length 72 [2021-11-02 22:58:58,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:58:58,821 INFO L470 AbstractCegarLoop]: Abstraction has 743 states and 952 transitions. [2021-11-02 22:58:58,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:58:58,822 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 952 transitions. [2021-11-02 22:58:58,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 22:58:58,823 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:58:58,823 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:58,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-02 22:58:59,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:58:59,057 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-02 22:58:59,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:59,057 INFO L85 PathProgramCache]: Analyzing trace with hash 876564216, now seen corresponding path program 2 times [2021-11-02 22:58:59,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:58:59,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951252201] [2021-11-02 22:58:59,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:58:59,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:58:59,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:58:59,060 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:58:59,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-02 22:59:00,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:59:00,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:59:00,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 22:59:00,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:59:00,414 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:59:00,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:59:01,129 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:59:01,129 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:59:01,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951252201] [2021-11-02 22:59:01,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951252201] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:59:01,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:59:01,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-02 22:59:01,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881068965] [2021-11-02 22:59:01,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:59:01,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:59:01,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:59:01,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:59:01,131 INFO L87 Difference]: Start difference. First operand 743 states and 952 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:59:03,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:59:03,245 INFO L93 Difference]: Finished difference Result 771 states and 996 transitions. [2021-11-02 22:59:03,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 22:59:03,247 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2021-11-02 22:59:03,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:59:03,253 INFO L225 Difference]: With dead ends: 771 [2021-11-02 22:59:03,253 INFO L226 Difference]: Without dead ends: 767 [2021-11-02 22:59:03,254 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 22:59:03,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2021-11-02 22:59:03,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 755. [2021-11-02 22:59:03,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 554 states have (on average 1.6768953068592058) internal successors, (929), 740 states have internal predecessors, (929), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-02 22:59:03,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 968 transitions. [2021-11-02 22:59:03,279 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 968 transitions. Word has length 76 [2021-11-02 22:59:03,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:59:03,280 INFO L470 AbstractCegarLoop]: Abstraction has 755 states and 968 transitions. [2021-11-02 22:59:03,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:59:03,280 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 968 transitions. [2021-11-02 22:59:03,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 22:59:03,281 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:59:03,282 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:59:03,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-02 22:59:03,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:59:03,503 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-02 22:59:03,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:59:03,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1089906696, now seen corresponding path program 3 times [2021-11-02 22:59:03,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:59:03,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34126706] [2021-11-02 22:59:03,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:59:03,505 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:59:03,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:59:03,507 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:59:03,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-02 22:59:05,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-02 22:59:05,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:59:05,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 22:59:05,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:59:05,704 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:59:05,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:59:07,816 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:59:07,816 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:59:07,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34126706] [2021-11-02 22:59:07,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34126706] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:59:07,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:59:07,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-02 22:59:07,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209698955] [2021-11-02 22:59:07,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-02 22:59:07,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:59:07,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-02 22:59:07,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 22:59:07,820 INFO L87 Difference]: Start difference. First operand 755 states and 968 transitions. Second operand has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:59:17,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:59:17,500 INFO L93 Difference]: Finished difference Result 811 states and 1060 transitions. [2021-11-02 22:59:17,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-02 22:59:17,502 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 84 [2021-11-02 22:59:17,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:59:17,508 INFO L225 Difference]: With dead ends: 811 [2021-11-02 22:59:17,508 INFO L226 Difference]: Without dead ends: 807 [2021-11-02 22:59:17,511 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1817, Invalid=4189, Unknown=0, NotChecked=0, Total=6006 [2021-11-02 22:59:17,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2021-11-02 22:59:17,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 779. [2021-11-02 22:59:17,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 578 states have (on average 1.6626297577854672) internal successors, (961), 764 states have internal predecessors, (961), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-02 22:59:17,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1000 transitions. [2021-11-02 22:59:17,539 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1000 transitions. Word has length 84 [2021-11-02 22:59:17,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:59:17,539 INFO L470 AbstractCegarLoop]: Abstraction has 779 states and 1000 transitions. [2021-11-02 22:59:17,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:59:17,540 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1000 transitions. [2021-11-02 22:59:17,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-02 22:59:17,541 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:59:17,541 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:59:17,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-02 22:59:17,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:59:17,755 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-02 22:59:17,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:59:17,756 INFO L85 PathProgramCache]: Analyzing trace with hash -145593864, now seen corresponding path program 4 times [2021-11-02 22:59:17,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:59:17,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555336467] [2021-11-02 22:59:17,757 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:59:17,757 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:59:17,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:59:17,759 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:59:17,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-02 22:59:18,701 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:59:18,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:59:18,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-02 22:59:18,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:59:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:59:20,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:59:26,247 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:59:26,248 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:59:26,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555336467] [2021-11-02 22:59:26,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555336467] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:59:26,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:59:26,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-02 22:59:26,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706564747] [2021-11-02 22:59:26,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-02 22:59:26,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:59:26,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-02 22:59:26,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-02 22:59:26,254 INFO L87 Difference]: Start difference. First operand 779 states and 1000 transitions. Second operand has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:59:46,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:59:46,010 INFO L93 Difference]: Finished difference Result 873 states and 1152 transitions. [2021-11-02 22:59:46,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-11-02 22:59:46,012 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 100 [2021-11-02 22:59:46,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:59:46,019 INFO L225 Difference]: With dead ends: 873 [2021-11-02 22:59:46,019 INFO L226 Difference]: Without dead ends: 869 [2021-11-02 22:59:46,028 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2373 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=4552, Invalid=14908, Unknown=0, NotChecked=0, Total=19460 [2021-11-02 22:59:46,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2021-11-02 22:59:46,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 809. [2021-11-02 22:59:46,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 608 states have (on average 1.65625) internal successors, (1007), 794 states have internal predecessors, (1007), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-02 22:59:46,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1046 transitions. [2021-11-02 22:59:46,080 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1046 transitions. Word has length 100 [2021-11-02 22:59:46,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:59:46,081 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 1046 transitions. [2021-11-02 22:59:46,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:59:46,082 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1046 transitions. [2021-11-02 22:59:46,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-02 22:59:46,083 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:59:46,083 INFO L513 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:59:46,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-02 22:59:46,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:59:46,299 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-02 22:59:46,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:59:46,301 INFO L85 PathProgramCache]: Analyzing trace with hash 841634232, now seen corresponding path program 5 times [2021-11-02 22:59:46,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:59:46,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632555114] [2021-11-02 22:59:46,303 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:59:46,305 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:59:46,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:59:46,308 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:59:46,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae17a765-3842-469d-8485-10e15737e769/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-02 22:59:48,333 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-02 22:59:48,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:59:48,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-02 22:59:48,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:59:48,393 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 [2021-11-02 22:59:48,715 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-02 22:59:48,715 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 [2021-11-02 22:59:48,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-02 22:59:49,079 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 30 [2021-11-02 23:09:26,118 WARN L207 SmtUtils]: Spent 5.64 s on a formula simplification that was a NOOP. DAG size: 78