./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc --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 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:03:33,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:03:33,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:03:33,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:03:33,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:03:33,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:03:33,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:03:33,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:03:33,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:03:33,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:03:33,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:03:33,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:03:33,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:03:33,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:03:33,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:03:33,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:03:33,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:03:33,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:03:33,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:03:33,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:03:33,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:03:33,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:03:33,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:03:33,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:03:33,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:03:33,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:03:33,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:03:33,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:03:33,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:03:33,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:03:33,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:03:33,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:03:33,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:03:33,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:03:33,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:03:33,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:03:33,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:03:33,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:03:33,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:03:33,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:03:33,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:03:33,148 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-02 21:03:33,206 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:03:33,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:03:33,208 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:03:33,208 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:03:33,210 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:03:33,211 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:03:33,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:03:33,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:03:33,212 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:03:33,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:03:33,214 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:03:33,214 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:03:33,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:03:33,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:03:33,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:03:33,216 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 21:03:33,216 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 21:03:33,216 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 21:03:33,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:03:33,217 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:03:33,217 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:03:33,217 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:03:33,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:03:33,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:03:33,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:03:33,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:33,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:03:33,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:03:33,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:03:33,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:03:33,222 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_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc [2022-11-02 21:03:33,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:03:33,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:03:33,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:03:33,665 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:03:33,666 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:03:33,668 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2022-11-02 21:03:33,762 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/data/c9b9b2778/d03c2849dcdc4728b7f26c6eba4119f5/FLAG35b5eeea7 [2022-11-02 21:03:34,718 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:03:34,719 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2022-11-02 21:03:34,748 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/data/c9b9b2778/d03c2849dcdc4728b7f26c6eba4119f5/FLAG35b5eeea7 [2022-11-02 21:03:34,800 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/data/c9b9b2778/d03c2849dcdc4728b7f26c6eba4119f5 [2022-11-02 21:03:34,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:03:34,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:03:34,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:34,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:03:34,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:03:34,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:34" (1/1) ... [2022-11-02 21:03:34,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c93198b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:34, skipping insertion in model container [2022-11-02 21:03:34,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:34" (1/1) ... [2022-11-02 21:03:34,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:03:34,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:03:35,661 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[33021,33034] [2022-11-02 21:03:36,051 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[84583,84596] [2022-11-02 21:03:36,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:36,090 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-02 21:03:36,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7167d02a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:36, skipping insertion in model container [2022-11-02 21:03:36,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:36,092 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-02 21:03:36,095 INFO L158 Benchmark]: Toolchain (without parser) took 1285.00ms. Allocated memory is still 94.4MB. Free memory was 60.1MB in the beginning and 48.8MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 21:03:36,098 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 94.4MB. Free memory was 49.9MB in the beginning and 49.8MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:03:36,101 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1277.75ms. Allocated memory is still 94.4MB. Free memory was 59.8MB in the beginning and 49.0MB in the end (delta: 10.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 21:03:36,103 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 94.4MB. Free memory was 49.9MB in the beginning and 49.8MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1277.75ms. Allocated memory is still 94.4MB. Free memory was 59.8MB in the beginning and 49.0MB in the end (delta: 10.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: Unsupported Syntax Found a cast between two array/pointer types of different sizes 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/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc --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 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:03:38,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:03:38,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:03:38,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:03:38,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:03:38,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:03:38,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:03:38,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:03:38,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:03:38,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:03:38,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:03:38,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:03:38,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:03:38,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:03:38,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:03:38,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:03:38,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:03:38,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:03:38,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:03:38,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:03:38,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:03:38,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:03:38,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:03:38,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:03:38,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:03:38,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:03:38,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:03:38,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:03:38,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:03:38,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:03:38,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:03:38,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:03:38,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:03:38,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:03:38,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:03:38,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:03:38,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:03:38,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:03:38,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:03:38,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:03:38,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:03:38,849 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-02 21:03:38,900 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:03:38,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:03:38,902 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:03:38,902 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:03:38,903 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:03:38,904 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:03:38,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:03:38,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:03:38,906 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:03:38,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:03:38,908 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:03:38,908 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:03:38,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:03:38,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:03:38,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:03:38,910 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 21:03:38,910 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 21:03:38,910 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 21:03:38,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:03:38,911 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:03:38,911 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:03:38,911 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:03:38,912 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:03:38,912 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:03:38,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:03:38,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:03:38,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:03:38,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:38,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:03:38,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:03:38,914 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:03:38,914 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:03:38,915 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:03:38,915 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_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc [2022-11-02 21:03:39,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:03:39,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:03:39,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:03:39,469 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:03:39,472 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:03:39,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2022-11-02 21:03:39,564 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/data/a15915c9e/995ca0bec3b34971b01e722a1da8df4f/FLAGcb6277fbf [2022-11-02 21:03:40,428 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:03:40,433 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2022-11-02 21:03:40,471 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/data/a15915c9e/995ca0bec3b34971b01e722a1da8df4f/FLAGcb6277fbf [2022-11-02 21:03:40,996 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/data/a15915c9e/995ca0bec3b34971b01e722a1da8df4f [2022-11-02 21:03:41,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:03:41,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:03:41,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:41,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:03:41,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:03:41,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:40" (1/1) ... [2022-11-02 21:03:41,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@300bfbe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:41, skipping insertion in model container [2022-11-02 21:03:41,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:40" (1/1) ... [2022-11-02 21:03:41,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:03:41,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:03:41,842 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[33021,33034] [2022-11-02 21:03:42,197 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[84583,84596] [2022-11-02 21:03:42,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:42,226 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-02 21:03:42,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:03:42,276 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[33021,33034] [2022-11-02 21:03:42,406 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[84583,84596] [2022-11-02 21:03:42,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:42,420 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:03:42,452 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[33021,33034] [2022-11-02 21:03:42,563 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[84583,84596] [2022-11-02 21:03:42,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:42,614 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:03:42,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:42 WrapperNode [2022-11-02 21:03:42,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:42,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:42,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:03:42,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:03:42,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:42" (1/1) ... [2022-11-02 21:03:42,691 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:42" (1/1) ... [2022-11-02 21:03:42,877 INFO L138 Inliner]: procedures = 180, calls = 781, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3034 [2022-11-02 21:03:42,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:42,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:03:42,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:03:42,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:03:42,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:42" (1/1) ... [2022-11-02 21:03:42,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:42" (1/1) ... [2022-11-02 21:03:42,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:42" (1/1) ... [2022-11-02 21:03:42,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:42" (1/1) ... [2022-11-02 21:03:43,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:42" (1/1) ... [2022-11-02 21:03:43,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:42" (1/1) ... [2022-11-02 21:03:43,121 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:42" (1/1) ... [2022-11-02 21:03:43,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:42" (1/1) ... [2022-11-02 21:03:43,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:03:43,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:03:43,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:03:43,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:03:43,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:42" (1/1) ... [2022-11-02 21:03:43,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:43,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:43,187 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:03:43,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:03:43,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-02 21:03:43,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-02 21:03:43,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 21:03:43,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 21:03:43,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-02 21:03:43,249 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-02 21:03:43,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 21:03:43,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:03:43,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 21:03:43,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:03:43,250 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-02 21:03:43,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 21:03:43,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:03:43,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-02 21:03:43,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-02 21:03:43,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:03:43,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:03:43,657 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:03:43,660 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:03:43,665 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-02 21:03:52,348 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:03:52,374 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:03:52,379 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-02 21:03:52,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:52 BoogieIcfgContainer [2022-11-02 21:03:52,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:03:52,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:03:52,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:03:52,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:03:52,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:03:40" (1/3) ... [2022-11-02 21:03:52,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a01642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:03:52, skipping insertion in model container [2022-11-02 21:03:52,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:42" (2/3) ... [2022-11-02 21:03:52,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a01642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:03:52, skipping insertion in model container [2022-11-02 21:03:52,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:52" (3/3) ... [2022-11-02 21:03:52,400 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test9-2.i [2022-11-02 21:03:52,421 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:03:52,421 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2022-11-02 21:03:52,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:03:52,546 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@625be34b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:03:52,546 INFO L358 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2022-11-02 21:03:52,558 INFO L276 IsEmpty]: Start isEmpty. Operand has 2071 states, 1032 states have (on average 2.123062015503876) internal successors, (2191), 2065 states have internal predecessors, (2191), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-02 21:03:52,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 21:03:52,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:52,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 21:03:52,566 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-02 21:03:52,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:52,572 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-11-02 21:03:52,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:52,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754909402] [2022-11-02 21:03:52,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:52,588 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:52,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:52,593 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:52,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:03:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:52,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:03:52,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:52,868 INFO L390 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 7 [2022-11-02 21:03:52,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:52,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:52,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:52,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754909402] [2022-11-02 21:03:52,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754909402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:52,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:52,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:03:52,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087388951] [2022-11-02 21:03:52,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:52,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:03:52,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:52,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:03:52,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:03:53,017 INFO L87 Difference]: Start difference. First operand has 2071 states, 1032 states have (on average 2.123062015503876) internal successors, (2191), 2065 states have internal predecessors, (2191), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:57,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:57,145 INFO L93 Difference]: Finished difference Result 2235 states and 3301 transitions. [2022-11-02 21:03:57,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:03:57,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-02 21:03:57,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:57,206 INFO L225 Difference]: With dead ends: 2235 [2022-11-02 21:03:57,217 INFO L226 Difference]: Without dead ends: 2233 [2022-11-02 21:03:57,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:03:57,230 INFO L413 NwaCegarLoop]: 2636 mSDtfsCounter, 1985 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2488 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:57,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2488 Valid, 2785 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-02 21:03:57,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2022-11-02 21:03:57,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 2055. [2022-11-02 21:03:57,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2055 states, 1032 states have (on average 2.0416666666666665) internal successors, (2107), 2049 states have internal predecessors, (2107), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-02 21:03:57,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 3113 transitions. [2022-11-02 21:03:57,799 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 3113 transitions. Word has length 3 [2022-11-02 21:03:57,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:57,799 INFO L495 AbstractCegarLoop]: Abstraction has 2055 states and 3113 transitions. [2022-11-02 21:03:57,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:57,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 3113 transitions. [2022-11-02 21:03:57,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 21:03:57,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:57,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 21:03:57,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:58,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:58,018 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-02 21:03:58,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:58,019 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-11-02 21:03:58,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:58,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034294314] [2022-11-02 21:03:58,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:58,020 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:58,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:58,022 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:58,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:03:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:58,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:03:58,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:58,221 INFO L390 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 [2022-11-02 21:03:58,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:58,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:58,242 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:58,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034294314] [2022-11-02 21:03:58,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034294314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:58,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:58,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:03:58,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102360759] [2022-11-02 21:03:58,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:58,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:03:58,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:58,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:03:58,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:03:58,256 INFO L87 Difference]: Start difference. First operand 2055 states and 3113 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:03,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:03,939 INFO L93 Difference]: Finished difference Result 3463 states and 5553 transitions. [2022-11-02 21:04:03,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:03,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-02 21:04:03,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:03,967 INFO L225 Difference]: With dead ends: 3463 [2022-11-02 21:04:03,967 INFO L226 Difference]: Without dead ends: 3463 [2022-11-02 21:04:03,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:03,970 INFO L413 NwaCegarLoop]: 3417 mSDtfsCounter, 1440 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 5500 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:03,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1940 Valid, 5500 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-02 21:04:03,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3463 states. [2022-11-02 21:04:04,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3463 to 3177. [2022-11-02 21:04:04,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3177 states, 1655 states have (on average 2.015105740181269) internal successors, (3335), 3171 states have internal predecessors, (3335), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-02 21:04:04,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3177 states to 3177 states and 5341 transitions. [2022-11-02 21:04:04,482 INFO L78 Accepts]: Start accepts. Automaton has 3177 states and 5341 transitions. Word has length 3 [2022-11-02 21:04:04,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:04,483 INFO L495 AbstractCegarLoop]: Abstraction has 3177 states and 5341 transitions. [2022-11-02 21:04:04,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:04,485 INFO L276 IsEmpty]: Start isEmpty. Operand 3177 states and 5341 transitions. [2022-11-02 21:04:04,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 21:04:04,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:04,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:04,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:04,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:04,702 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-02 21:04:04,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:04,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-11-02 21:04:04,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:04,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442411704] [2022-11-02 21:04:04,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:04,712 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:04,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:04,714 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:04,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:04:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:04,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:04:04,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:04,947 INFO L390 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 7 [2022-11-02 21:04:04,954 INFO L390 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 [2022-11-02 21:04:05,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:04:05,032 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-02 21:04:05,055 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 21:04:05,055 INFO L390 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 13 treesize of output 13 [2022-11-02 21:04:05,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:05,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:05,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:05,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442411704] [2022-11-02 21:04:05,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442411704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:05,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:05,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:04:05,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156265777] [2022-11-02 21:04:05,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:05,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:05,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:05,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:05,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:05,090 INFO L87 Difference]: Start difference. First operand 3177 states and 5341 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:12,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:12,877 INFO L93 Difference]: Finished difference Result 3344 states and 5516 transitions. [2022-11-02 21:04:12,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:04:12,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 21:04:12,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:12,895 INFO L225 Difference]: With dead ends: 3344 [2022-11-02 21:04:12,895 INFO L226 Difference]: Without dead ends: 3344 [2022-11-02 21:04:12,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:12,896 INFO L413 NwaCegarLoop]: 2363 mSDtfsCounter, 4223 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4726 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:12,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4726 Valid, 2444 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-02 21:04:12,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3344 states. [2022-11-02 21:04:13,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3344 to 2044. [2022-11-02 21:04:13,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 1032 states have (on average 2.0300387596899223) internal successors, (2095), 2038 states have internal predecessors, (2095), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-02 21:04:13,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 3101 transitions. [2022-11-02 21:04:13,237 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 3101 transitions. Word has length 7 [2022-11-02 21:04:13,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:13,238 INFO L495 AbstractCegarLoop]: Abstraction has 2044 states and 3101 transitions. [2022-11-02 21:04:13,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:13,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 3101 transitions. [2022-11-02 21:04:13,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 21:04:13,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:13,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:13,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:13,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:13,454 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-02 21:04:13,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:13,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-11-02 21:04:13,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:13,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427036817] [2022-11-02 21:04:13,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:13,457 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:13,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:13,466 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:13,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:04:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:13,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:04:13,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:13,648 INFO L390 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 7 [2022-11-02 21:04:13,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:13,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:13,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:13,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427036817] [2022-11-02 21:04:13,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427036817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:13,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:13,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:04:13,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071678854] [2022-11-02 21:04:13,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:13,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:13,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:13,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:13,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:13,669 INFO L87 Difference]: Start difference. First operand 2044 states and 3101 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:17,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:17,433 INFO L93 Difference]: Finished difference Result 3210 states and 5288 transitions. [2022-11-02 21:04:17,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:17,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 21:04:17,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:17,456 INFO L225 Difference]: With dead ends: 3210 [2022-11-02 21:04:17,456 INFO L226 Difference]: Without dead ends: 3210 [2022-11-02 21:04:17,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:17,457 INFO L413 NwaCegarLoop]: 4866 mSDtfsCounter, 1804 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2307 SdHoareTripleChecker+Valid, 7123 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:17,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2307 Valid, 7123 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-02 21:04:17,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2022-11-02 21:04:17,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 1997. [2022-11-02 21:04:17,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1997 states, 1032 states have (on average 1.9844961240310077) internal successors, (2048), 1991 states have internal predecessors, (2048), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-02 21:04:17,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 3054 transitions. [2022-11-02 21:04:17,751 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 3054 transitions. Word has length 8 [2022-11-02 21:04:17,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:17,752 INFO L495 AbstractCegarLoop]: Abstraction has 1997 states and 3054 transitions. [2022-11-02 21:04:17,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:17,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 3054 transitions. [2022-11-02 21:04:17,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 21:04:17,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:17,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:17,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:17,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:17,968 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-02 21:04:17,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:17,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-11-02 21:04:17,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:17,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238267081] [2022-11-02 21:04:17,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:17,969 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:17,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:17,971 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:17,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:04:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:18,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:04:18,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:18,182 INFO L390 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 [2022-11-02 21:04:18,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:18,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:18,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:18,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238267081] [2022-11-02 21:04:18,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238267081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:18,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:18,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:04:18,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944143516] [2022-11-02 21:04:18,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:18,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:18,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:18,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:18,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:18,221 INFO L87 Difference]: Start difference. First operand 1997 states and 3054 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:23,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:23,053 INFO L93 Difference]: Finished difference Result 3275 states and 5356 transitions. [2022-11-02 21:04:23,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:23,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 21:04:23,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:23,072 INFO L225 Difference]: With dead ends: 3275 [2022-11-02 21:04:23,073 INFO L226 Difference]: Without dead ends: 3275 [2022-11-02 21:04:23,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:23,076 INFO L413 NwaCegarLoop]: 5058 mSDtfsCounter, 1489 mSDsluCounter, 2423 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 7481 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:23,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1989 Valid, 7481 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-02 21:04:23,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2022-11-02 21:04:23,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 2019. [2022-11-02 21:04:23,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 1064 states have (on average 1.9774436090225564) internal successors, (2104), 2013 states have internal predecessors, (2104), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-02 21:04:23,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3110 transitions. [2022-11-02 21:04:23,505 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3110 transitions. Word has length 8 [2022-11-02 21:04:23,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:23,505 INFO L495 AbstractCegarLoop]: Abstraction has 2019 states and 3110 transitions. [2022-11-02 21:04:23,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:23,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3110 transitions. [2022-11-02 21:04:23,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:04:23,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:23,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:23,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:23,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:23,721 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr429REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-02 21:04:23,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:23,722 INFO L85 PathProgramCache]: Analyzing trace with hash 874110197, now seen corresponding path program 1 times [2022-11-02 21:04:23,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:23,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945027600] [2022-11-02 21:04:23,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:23,723 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:23,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:23,725 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:23,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:04:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:23,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:04:23,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:24,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:24,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:24,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:24,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945027600] [2022-11-02 21:04:24,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945027600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:24,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:24,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:04:24,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008146055] [2022-11-02 21:04:24,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:24,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:24,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:24,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:24,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:24,018 INFO L87 Difference]: Start difference. First operand 2019 states and 3110 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:24,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:24,480 INFO L93 Difference]: Finished difference Result 3486 states and 5612 transitions. [2022-11-02 21:04:24,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:24,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 21:04:24,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:24,499 INFO L225 Difference]: With dead ends: 3486 [2022-11-02 21:04:24,499 INFO L226 Difference]: Without dead ends: 3486 [2022-11-02 21:04:24,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:24,502 INFO L413 NwaCegarLoop]: 3606 mSDtfsCounter, 1560 mSDsluCounter, 2887 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 6493 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:24,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2062 Valid, 6493 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:04:24,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2022-11-02 21:04:24,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 3193. [2022-11-02 21:04:25,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3193 states, 1738 states have (on average 1.9568469505178365) internal successors, (3401), 3187 states have internal predecessors, (3401), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-02 21:04:25,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3193 states to 3193 states and 5407 transitions. [2022-11-02 21:04:25,014 INFO L78 Accepts]: Start accepts. Automaton has 3193 states and 5407 transitions. Word has length 11 [2022-11-02 21:04:25,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:25,015 INFO L495 AbstractCegarLoop]: Abstraction has 3193 states and 5407 transitions. [2022-11-02 21:04:25,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:25,016 INFO L276 IsEmpty]: Start isEmpty. Operand 3193 states and 5407 transitions. [2022-11-02 21:04:25,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:04:25,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:25,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:25,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:25,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:25,232 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-02 21:04:25,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:25,233 INFO L85 PathProgramCache]: Analyzing trace with hash -702153283, now seen corresponding path program 1 times [2022-11-02 21:04:25,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:25,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24759116] [2022-11-02 21:04:25,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:25,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:25,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:25,236 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:25,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:04:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:25,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:04:25,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:25,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:25,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:25,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:25,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24759116] [2022-11-02 21:04:25,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24759116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:25,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:25,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:04:25,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004482668] [2022-11-02 21:04:25,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:25,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:25,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:25,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:25,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:25,459 INFO L87 Difference]: Start difference. First operand 3193 states and 5407 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:25,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:25,531 INFO L93 Difference]: Finished difference Result 3347 states and 5547 transitions. [2022-11-02 21:04:25,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:25,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:04:25,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:25,558 INFO L225 Difference]: With dead ends: 3347 [2022-11-02 21:04:25,559 INFO L226 Difference]: Without dead ends: 3347 [2022-11-02 21:04:25,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:25,560 INFO L413 NwaCegarLoop]: 3202 mSDtfsCounter, 1394 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 4519 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:25,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1894 Valid, 4519 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:04:25,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2022-11-02 21:04:25,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 3133. [2022-11-02 21:04:25,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3133 states, 1702 states have (on average 1.9477085781433607) internal successors, (3315), 3127 states have internal predecessors, (3315), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-02 21:04:25,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3133 states to 3133 states and 5321 transitions. [2022-11-02 21:04:25,859 INFO L78 Accepts]: Start accepts. Automaton has 3133 states and 5321 transitions. Word has length 13 [2022-11-02 21:04:25,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:25,859 INFO L495 AbstractCegarLoop]: Abstraction has 3133 states and 5321 transitions. [2022-11-02 21:04:25,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:25,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3133 states and 5321 transitions. [2022-11-02 21:04:25,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 21:04:25,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:25,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:25,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:26,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:26,075 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr534ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-02 21:04:26,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:26,076 INFO L85 PathProgramCache]: Analyzing trace with hash 240246254, now seen corresponding path program 1 times [2022-11-02 21:04:26,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:26,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766357313] [2022-11-02 21:04:26,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:26,076 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:26,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:26,078 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:26,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:04:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:26,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:04:26,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:26,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:04:26,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:04:26,351 INFO L390 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 29 treesize of output 38 [2022-11-02 21:04:26,411 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:04:26,412 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 22 [2022-11-02 21:04:26,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:26,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:26,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:26,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766357313] [2022-11-02 21:04:26,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766357313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:26,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:26,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:26,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995500101] [2022-11-02 21:04:26,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:26,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:26,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:26,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:26,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:26,463 INFO L87 Difference]: Start difference. First operand 3133 states and 5321 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:31,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:31,125 INFO L93 Difference]: Finished difference Result 5450 states and 9669 transitions. [2022-11-02 21:04:31,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:04:31,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-02 21:04:31,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:31,160 INFO L225 Difference]: With dead ends: 5450 [2022-11-02 21:04:31,160 INFO L226 Difference]: Without dead ends: 5450 [2022-11-02 21:04:31,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:31,161 INFO L413 NwaCegarLoop]: 3461 mSDtfsCounter, 1330 mSDsluCounter, 5812 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1830 SdHoareTripleChecker+Valid, 9273 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:31,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1830 Valid, 9273 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 674 Invalid, 0 Unknown, 37 Unchecked, 4.5s Time] [2022-11-02 21:04:31,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5450 states. [2022-11-02 21:04:31,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5450 to 3132. [2022-11-02 21:04:31,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 1701 states have (on average 1.9476778365667256) internal successors, (3313), 3126 states have internal predecessors, (3313), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-02 21:04:31,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 5319 transitions. [2022-11-02 21:04:31,757 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 5319 transitions. Word has length 14 [2022-11-02 21:04:31,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:31,757 INFO L495 AbstractCegarLoop]: Abstraction has 3132 states and 5319 transitions. [2022-11-02 21:04:31,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:31,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 5319 transitions. [2022-11-02 21:04:31,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 21:04:31,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:31,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:31,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:31,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:31,974 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-02 21:04:31,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:31,974 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-11-02 21:04:31,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:31,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759292714] [2022-11-02 21:04:31,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:31,975 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:31,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:31,978 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:31,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:04:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:32,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:04:32,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:32,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:32,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:32,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:32,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759292714] [2022-11-02 21:04:32,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759292714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:32,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:32,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:04:32,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156819600] [2022-11-02 21:04:32,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:32,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:32,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:32,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:32,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:32,234 INFO L87 Difference]: Start difference. First operand 3132 states and 5319 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:32,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:32,295 INFO L93 Difference]: Finished difference Result 3072 states and 5233 transitions. [2022-11-02 21:04:32,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:32,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-02 21:04:32,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:32,307 INFO L225 Difference]: With dead ends: 3072 [2022-11-02 21:04:32,307 INFO L226 Difference]: Without dead ends: 3072 [2022-11-02 21:04:32,307 INFO L412 NwaCegarLoop]: 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 [2022-11-02 21:04:32,310 INFO L413 NwaCegarLoop]: 2954 mSDtfsCounter, 1933 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2436 SdHoareTripleChecker+Valid, 3481 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:32,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2436 Valid, 3481 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:04:32,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2022-11-02 21:04:32,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 3072. [2022-11-02 21:04:32,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 1665 states have (on average 1.9381381381381382) internal successors, (3227), 3066 states have internal predecessors, (3227), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-02 21:04:32,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 5233 transitions. [2022-11-02 21:04:32,615 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 5233 transitions. Word has length 18 [2022-11-02 21:04:32,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:32,616 INFO L495 AbstractCegarLoop]: Abstraction has 3072 states and 5233 transitions. [2022-11-02 21:04:32,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:32,616 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 5233 transitions. [2022-11-02 21:04:32,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 21:04:32,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:32,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:32,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:32,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:32,830 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-02 21:04:32,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:32,831 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-11-02 21:04:32,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:32,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1399785303] [2022-11-02 21:04:32,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:32,831 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:32,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:32,834 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:32,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:04:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:33,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:04:33,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:33,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:33,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:33,105 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:33,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1399785303] [2022-11-02 21:04:33,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1399785303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:33,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:33,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:33,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293085892] [2022-11-02 21:04:33,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:33,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:33,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:33,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:33,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:33,108 INFO L87 Difference]: Start difference. First operand 3072 states and 5233 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:33,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:33,253 INFO L93 Difference]: Finished difference Result 3044 states and 5177 transitions. [2022-11-02 21:04:33,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:04:33,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-02 21:04:33,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:33,264 INFO L225 Difference]: With dead ends: 3044 [2022-11-02 21:04:33,264 INFO L226 Difference]: Without dead ends: 3044 [2022-11-02 21:04:33,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:33,265 INFO L413 NwaCegarLoop]: 2909 mSDtfsCounter, 1904 mSDsluCounter, 3429 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2407 SdHoareTripleChecker+Valid, 6338 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:33,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2407 Valid, 6338 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:33,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3044 states. [2022-11-02 21:04:33,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3044 to 3042. [2022-11-02 21:04:33,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3042 states, 1649 states have (on average 1.9217707701637357) internal successors, (3169), 3036 states have internal predecessors, (3169), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-02 21:04:33,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 5175 transitions. [2022-11-02 21:04:33,640 INFO L78 Accepts]: Start accepts. Automaton has 3042 states and 5175 transitions. Word has length 20 [2022-11-02 21:04:33,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:33,640 INFO L495 AbstractCegarLoop]: Abstraction has 3042 states and 5175 transitions. [2022-11-02 21:04:33,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:33,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3042 states and 5175 transitions. [2022-11-02 21:04:33,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-02 21:04:33,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:33,644 INFO L195 NwaCegarLoop]: 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] [2022-11-02 21:04:33,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:33,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:33,860 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-02 21:04:33,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:33,860 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-11-02 21:04:33,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:33,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756930460] [2022-11-02 21:04:33,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:33,861 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:33,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:33,863 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:33,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:04:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:34,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:04:34,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:34,120 INFO L390 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 7 [2022-11-02 21:04:34,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:34,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:34,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:34,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756930460] [2022-11-02 21:04:34,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756930460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:34,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:34,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:04:34,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075362809] [2022-11-02 21:04:34,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:34,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:34,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:34,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:34,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:34,233 INFO L87 Difference]: Start difference. First operand 3042 states and 5175 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:40,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:40,679 INFO L93 Difference]: Finished difference Result 5473 states and 9671 transitions. [2022-11-02 21:04:40,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:40,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-02 21:04:40,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:40,701 INFO L225 Difference]: With dead ends: 5473 [2022-11-02 21:04:40,701 INFO L226 Difference]: Without dead ends: 5473 [2022-11-02 21:04:40,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:40,702 INFO L413 NwaCegarLoop]: 2988 mSDtfsCounter, 3442 mSDsluCounter, 3514 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3442 SdHoareTripleChecker+Valid, 6502 SdHoareTripleChecker+Invalid, 2890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:40,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3442 Valid, 6502 Invalid, 2890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1019 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-02 21:04:40,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5473 states. [2022-11-02 21:04:41,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5473 to 3038. [2022-11-02 21:04:41,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3038 states, 1649 states have (on average 1.9169193450576107) internal successors, (3161), 3032 states have internal predecessors, (3161), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-02 21:04:41,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3038 states to 3038 states and 5167 transitions. [2022-11-02 21:04:41,283 INFO L78 Accepts]: Start accepts. Automaton has 3038 states and 5167 transitions. Word has length 34 [2022-11-02 21:04:41,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:41,283 INFO L495 AbstractCegarLoop]: Abstraction has 3038 states and 5167 transitions. [2022-11-02 21:04:41,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:41,284 INFO L276 IsEmpty]: Start isEmpty. Operand 3038 states and 5167 transitions. [2022-11-02 21:04:41,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-02 21:04:41,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:41,285 INFO L195 NwaCegarLoop]: 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] [2022-11-02 21:04:41,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:41,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:41,509 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-02 21:04:41,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:41,510 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-11-02 21:04:41,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:41,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096458108] [2022-11-02 21:04:41,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:41,511 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:41,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:41,513 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:41,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 21:04:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:41,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:04:41,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:41,758 INFO L390 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 [2022-11-02 21:04:42,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:42,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:42,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:42,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096458108] [2022-11-02 21:04:42,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1096458108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:42,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:42,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:04:42,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375386814] [2022-11-02 21:04:42,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:42,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:42,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:42,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:42,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:42,028 INFO L87 Difference]: Start difference. First operand 3038 states and 5167 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:51,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:51,136 INFO L93 Difference]: Finished difference Result 5530 states and 9693 transitions. [2022-11-02 21:04:51,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:04:51,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-02 21:04:51,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:51,198 INFO L225 Difference]: With dead ends: 5530 [2022-11-02 21:04:51,199 INFO L226 Difference]: Without dead ends: 5530 [2022-11-02 21:04:51,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:51,200 INFO L413 NwaCegarLoop]: 5152 mSDtfsCounter, 2908 mSDsluCounter, 4930 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 1004 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2908 SdHoareTripleChecker+Valid, 10082 SdHoareTripleChecker+Invalid, 3174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1004 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:51,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2908 Valid, 10082 Invalid, 3174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1004 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-02 21:04:51,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5530 states. [2022-11-02 21:04:51,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5530 to 3034. [2022-11-02 21:04:51,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 1649 states have (on average 1.9120679199514858) internal successors, (3153), 3028 states have internal predecessors, (3153), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-02 21:04:51,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 5159 transitions. [2022-11-02 21:04:51,947 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 5159 transitions. Word has length 34 [2022-11-02 21:04:51,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:51,948 INFO L495 AbstractCegarLoop]: Abstraction has 3034 states and 5159 transitions. [2022-11-02 21:04:51,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:51,948 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 5159 transitions. [2022-11-02 21:04:51,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-02 21:04:51,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:51,950 INFO L195 NwaCegarLoop]: 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] [2022-11-02 21:04:51,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:52,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:52,164 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-02 21:04:52,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:52,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2022-11-02 21:04:52,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:52,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96107459] [2022-11-02 21:04:52,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:52,167 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:52,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:52,169 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:52,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 21:04:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:52,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:04:52,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:52,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:52,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:52,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:52,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96107459] [2022-11-02 21:04:52,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96107459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:52,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:52,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:52,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203655489] [2022-11-02 21:04:52,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:52,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:52,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:52,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:52,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:52,623 INFO L87 Difference]: Start difference. First operand 3034 states and 5159 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:52,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:52,730 INFO L93 Difference]: Finished difference Result 3022 states and 5139 transitions. [2022-11-02 21:04:52,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:04:52,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-11-02 21:04:52,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:52,742 INFO L225 Difference]: With dead ends: 3022 [2022-11-02 21:04:52,742 INFO L226 Difference]: Without dead ends: 3022 [2022-11-02 21:04:52,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:52,743 INFO L413 NwaCegarLoop]: 2903 mSDtfsCounter, 1880 mSDsluCounter, 3413 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2383 SdHoareTripleChecker+Valid, 6316 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:52,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2383 Valid, 6316 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:52,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2022-11-02 21:04:53,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 3022. [2022-11-02 21:04:53,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3022 states, 1637 states have (on average 1.9138668295662797) internal successors, (3133), 3016 states have internal predecessors, (3133), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-02 21:04:53,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 5139 transitions. [2022-11-02 21:04:53,177 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 5139 transitions. Word has length 52 [2022-11-02 21:04:53,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:53,178 INFO L495 AbstractCegarLoop]: Abstraction has 3022 states and 5139 transitions. [2022-11-02 21:04:53,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:53,178 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 5139 transitions. [2022-11-02 21:04:53,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-02 21:04:53,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:53,180 INFO L195 NwaCegarLoop]: 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] [2022-11-02 21:04:53,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:53,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:53,398 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-02 21:04:53,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:53,399 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-11-02 21:04:53,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:53,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706762366] [2022-11-02 21:04:53,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:53,400 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:53,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:53,403 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:53,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 21:04:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:53,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:04:53,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:54,001 INFO L390 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 [2022-11-02 21:04:54,010 INFO L390 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 7 [2022-11-02 21:04:54,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:04:54,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-02 21:04:54,691 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 21:04:54,691 INFO L390 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 13 treesize of output 13 [2022-11-02 21:04:54,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:54,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:54,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:54,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706762366] [2022-11-02 21:04:54,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706762366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:54,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:54,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:04:54,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976726162] [2022-11-02 21:04:54,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:54,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:54,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:54,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:54,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:54,721 INFO L87 Difference]: Start difference. First operand 3022 states and 5139 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:02,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:02,867 INFO L93 Difference]: Finished difference Result 5224 states and 9400 transitions. [2022-11-02 21:05:02,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:05:02,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-11-02 21:05:02,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:02,901 INFO L225 Difference]: With dead ends: 5224 [2022-11-02 21:05:02,902 INFO L226 Difference]: Without dead ends: 5224 [2022-11-02 21:05:02,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:02,903 INFO L413 NwaCegarLoop]: 2951 mSDtfsCounter, 4397 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 551 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5400 SdHoareTripleChecker+Valid, 4163 SdHoareTripleChecker+Invalid, 2186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 551 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:02,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5400 Valid, 4163 Invalid, 2186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [551 Valid, 1635 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-11-02 21:05:02,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5224 states. [2022-11-02 21:05:03,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5224 to 2952. [2022-11-02 21:05:03,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2952 states, 1605 states have (on average 1.8872274143302181) internal successors, (3029), 2946 states have internal predecessors, (3029), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-02 21:05:03,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 5035 transitions. [2022-11-02 21:05:03,604 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 5035 transitions. Word has length 60 [2022-11-02 21:05:03,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:03,604 INFO L495 AbstractCegarLoop]: Abstraction has 2952 states and 5035 transitions. [2022-11-02 21:05:03,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:03,605 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 5035 transitions. [2022-11-02 21:05:03,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 21:05:03,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:03,606 INFO L195 NwaCegarLoop]: 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] [2022-11-02 21:05:03,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:03,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:03,823 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-02 21:05:03,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:03,825 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-11-02 21:05:03,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:03,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356173203] [2022-11-02 21:05:03,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:03,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:03,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:03,828 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:03,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 21:05:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:04,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:05:04,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:04,263 INFO L390 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 7 [2022-11-02 21:05:04,286 INFO L390 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 [2022-11-02 21:05:04,325 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-02 21:05:04,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:04,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:04,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:04,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356173203] [2022-11-02 21:05:04,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356173203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:04,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:04,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:04,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933715414] [2022-11-02 21:05:04,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:04,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:05:04,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:04,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:05:04,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:04,342 INFO L87 Difference]: Start difference. First operand 2952 states and 5035 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:07,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:07,619 INFO L93 Difference]: Finished difference Result 2951 states and 5034 transitions. [2022-11-02 21:05:07,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:05:07,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-02 21:05:07,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:07,631 INFO L225 Difference]: With dead ends: 2951 [2022-11-02 21:05:07,632 INFO L226 Difference]: Without dead ends: 2951 [2022-11-02 21:05:07,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:07,633 INFO L413 NwaCegarLoop]: 2863 mSDtfsCounter, 4 mSDsluCounter, 7351 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10214 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:07,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10214 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-02 21:05:07,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2022-11-02 21:05:07,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2951. [2022-11-02 21:05:07,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2951 states, 1605 states have (on average 1.8866043613707164) internal successors, (3028), 2945 states have internal predecessors, (3028), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-02 21:05:07,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2951 states to 2951 states and 5034 transitions. [2022-11-02 21:05:07,994 INFO L78 Accepts]: Start accepts. Automaton has 2951 states and 5034 transitions. Word has length 65 [2022-11-02 21:05:07,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:07,996 INFO L495 AbstractCegarLoop]: Abstraction has 2951 states and 5034 transitions. [2022-11-02 21:05:07,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:07,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2951 states and 5034 transitions. [2022-11-02 21:05:07,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 21:05:07,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:07,999 INFO L195 NwaCegarLoop]: 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] [2022-11-02 21:05:08,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:08,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:08,217 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-02 21:05:08,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:08,217 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-11-02 21:05:08,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:08,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544624369] [2022-11-02 21:05:08,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:08,218 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:08,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:08,220 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:08,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 21:05:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:08,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:05:08,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:08,641 INFO L390 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 [2022-11-02 21:05:08,670 INFO L390 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 [2022-11-02 21:05:08,682 INFO L390 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 [2022-11-02 21:05:08,750 INFO L390 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 21 treesize of output 9 [2022-11-02 21:05:08,760 INFO L390 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 19 treesize of output 7 [2022-11-02 21:05:08,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:08,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:08,782 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:08,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544624369] [2022-11-02 21:05:08,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544624369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:08,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:08,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:08,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888809614] [2022-11-02 21:05:08,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:08,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:05:08,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:08,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:05:08,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:08,785 INFO L87 Difference]: Start difference. First operand 2951 states and 5034 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:13,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:13,289 INFO L93 Difference]: Finished difference Result 2950 states and 5033 transitions. [2022-11-02 21:05:13,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:05:13,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-02 21:05:13,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:13,305 INFO L225 Difference]: With dead ends: 2950 [2022-11-02 21:05:13,305 INFO L226 Difference]: Without dead ends: 2950 [2022-11-02 21:05:13,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:13,306 INFO L413 NwaCegarLoop]: 2863 mSDtfsCounter, 2 mSDsluCounter, 7387 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10250 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:13,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10250 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-02 21:05:13,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2022-11-02 21:05:13,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 2950. [2022-11-02 21:05:13,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 1604 states have (on average 1.8871571072319202) internal successors, (3027), 2944 states have internal predecessors, (3027), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-02 21:05:13,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 5033 transitions. [2022-11-02 21:05:13,722 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 5033 transitions. Word has length 65 [2022-11-02 21:05:13,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:13,723 INFO L495 AbstractCegarLoop]: Abstraction has 2950 states and 5033 transitions. [2022-11-02 21:05:13,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:13,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 5033 transitions. [2022-11-02 21:05:13,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-02 21:05:13,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:13,724 INFO L195 NwaCegarLoop]: 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, 1, 1, 1] [2022-11-02 21:05:13,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:13,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:13,943 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-02 21:05:13,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:13,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1522422575, now seen corresponding path program 1 times [2022-11-02 21:05:13,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:13,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129645038] [2022-11-02 21:05:13,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:13,945 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:13,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:13,947 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:13,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 21:05:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:14,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:05:14,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:14,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:14,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:14,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:14,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129645038] [2022-11-02 21:05:14,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129645038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:14,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:14,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:14,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542869187] [2022-11-02 21:05:14,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:14,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:14,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:14,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:14,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:14,427 INFO L87 Difference]: Start difference. First operand 2950 states and 5033 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:05:14,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:14,524 INFO L93 Difference]: Finished difference Result 2953 states and 5037 transitions. [2022-11-02 21:05:14,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:05:14,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2022-11-02 21:05:14,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:14,546 INFO L225 Difference]: With dead ends: 2953 [2022-11-02 21:05:14,546 INFO L226 Difference]: Without dead ends: 2953 [2022-11-02 21:05:14,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:14,556 INFO L413 NwaCegarLoop]: 2863 mSDtfsCounter, 2 mSDsluCounter, 5721 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8584 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:14,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8584 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:14,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2022-11-02 21:05:14,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 2953. [2022-11-02 21:05:14,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2953 states, 1606 states have (on average 1.8866749688667497) internal successors, (3030), 2947 states have internal predecessors, (3030), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 3 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2022-11-02 21:05:14,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2953 states to 2953 states and 5037 transitions. [2022-11-02 21:05:14,917 INFO L78 Accepts]: Start accepts. Automaton has 2953 states and 5037 transitions. Word has length 73 [2022-11-02 21:05:14,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:14,918 INFO L495 AbstractCegarLoop]: Abstraction has 2953 states and 5037 transitions. [2022-11-02 21:05:14,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:05:14,918 INFO L276 IsEmpty]: Start isEmpty. Operand 2953 states and 5037 transitions. [2022-11-02 21:05:14,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-02 21:05:14,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:14,920 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1] [2022-11-02 21:05:14,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-11-02 21:05:15,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:15,140 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-02 21:05:15,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:15,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1741939320, now seen corresponding path program 1 times [2022-11-02 21:05:15,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:15,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580658793] [2022-11-02 21:05:15,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:15,142 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:15,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:15,143 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:15,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 21:05:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:15,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:05:15,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:15,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:15,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:15,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:15,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:15,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580658793] [2022-11-02 21:05:15,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580658793] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:15,796 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:15,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 21:05:15,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819964352] [2022-11-02 21:05:15,799 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:15,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:05:15,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:15,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:05:15,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:05:15,801 INFO L87 Difference]: Start difference. First operand 2953 states and 5037 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:05:16,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:16,096 INFO L93 Difference]: Finished difference Result 2965 states and 5054 transitions. [2022-11-02 21:05:16,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:05:16,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 74 [2022-11-02 21:05:16,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:16,129 INFO L225 Difference]: With dead ends: 2965 [2022-11-02 21:05:16,130 INFO L226 Difference]: Without dead ends: 2965 [2022-11-02 21:05:16,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:05:16,131 INFO L413 NwaCegarLoop]: 2864 mSDtfsCounter, 22 mSDsluCounter, 5724 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 8588 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:16,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 8588 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:05:16,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2022-11-02 21:05:16,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 2963. [2022-11-02 21:05:16,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2963 states, 1615 states have (on average 1.8854489164086687) internal successors, (3045), 2956 states have internal predecessors, (3045), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2022-11-02 21:05:16,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2963 states to 2963 states and 5052 transitions. [2022-11-02 21:05:16,376 INFO L78 Accepts]: Start accepts. Automaton has 2963 states and 5052 transitions. Word has length 74 [2022-11-02 21:05:16,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:16,376 INFO L495 AbstractCegarLoop]: Abstraction has 2963 states and 5052 transitions. [2022-11-02 21:05:16,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:05:16,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2963 states and 5052 transitions. [2022-11-02 21:05:16,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-02 21:05:16,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:16,378 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:16,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:16,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:16,593 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-02 21:05:16,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:16,593 INFO L85 PathProgramCache]: Analyzing trace with hash 755671407, now seen corresponding path program 2 times [2022-11-02 21:05:16,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:16,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799734637] [2022-11-02 21:05:16,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:05:16,594 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:16,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:16,596 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:16,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 21:05:17,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:05:17,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:05:17,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:05:17,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:17,292 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:17,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:17,556 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:17,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799734637] [2022-11-02 21:05:17,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799734637] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:17,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:17,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 21:05:17,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100093254] [2022-11-02 21:05:17,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:17,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:05:17,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:17,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:05:17,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:05:17,558 INFO L87 Difference]: Start difference. First operand 2963 states and 5052 transitions. Second operand has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:05:18,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:18,527 INFO L93 Difference]: Finished difference Result 2984 states and 5080 transitions. [2022-11-02 21:05:18,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 21:05:18,529 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77 [2022-11-02 21:05:18,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:18,539 INFO L225 Difference]: With dead ends: 2984 [2022-11-02 21:05:18,539 INFO L226 Difference]: Without dead ends: 2980 [2022-11-02 21:05:18,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2022-11-02 21:05:18,540 INFO L413 NwaCegarLoop]: 2867 mSDtfsCounter, 67 mSDsluCounter, 14318 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 17185 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:18,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 17185 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:05:18,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2022-11-02 21:05:18,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 2972. [2022-11-02 21:05:18,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 1624 states have (on average 1.8823891625615763) internal successors, (3057), 2965 states have internal predecessors, (3057), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2022-11-02 21:05:18,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 5064 transitions. [2022-11-02 21:05:18,895 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 5064 transitions. Word has length 77 [2022-11-02 21:05:18,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:18,896 INFO L495 AbstractCegarLoop]: Abstraction has 2972 states and 5064 transitions. [2022-11-02 21:05:18,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:05:18,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 5064 transitions. [2022-11-02 21:05:18,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-02 21:05:18,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:18,897 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:18,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:19,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:19,112 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-02 21:05:19,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:19,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1043203377, now seen corresponding path program 3 times [2022-11-02 21:05:19,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:19,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754399591] [2022-11-02 21:05:19,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:05:19,114 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:19,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:19,115 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:19,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 21:05:20,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-02 21:05:20,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:05:20,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:05:20,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:20,288 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:20,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:21,471 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:21,471 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:21,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754399591] [2022-11-02 21:05:21,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754399591] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:21,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:21,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-02 21:05:21,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661982206] [2022-11-02 21:05:21,473 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:21,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 21:05:21,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:21,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 21:05:21,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-11-02 21:05:21,474 INFO L87 Difference]: Start difference. First operand 2972 states and 5064 transitions. Second operand has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:05:26,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:26,450 INFO L93 Difference]: Finished difference Result 3014 states and 5126 transitions. [2022-11-02 21:05:26,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-02 21:05:26,451 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 83 [2022-11-02 21:05:26,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:26,465 INFO L225 Difference]: With dead ends: 3014 [2022-11-02 21:05:26,465 INFO L226 Difference]: Without dead ends: 3008 [2022-11-02 21:05:26,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2022-11-02 21:05:26,467 INFO L413 NwaCegarLoop]: 2872 mSDtfsCounter, 162 mSDsluCounter, 40120 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 42992 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:26,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 42992 Invalid, 877 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [109 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 21:05:26,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2022-11-02 21:05:26,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 2990. [2022-11-02 21:05:26,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2990 states, 1642 states have (on average 1.8757612667478685) internal successors, (3080), 2983 states have internal predecessors, (3080), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2022-11-02 21:05:26,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2990 states to 2990 states and 5087 transitions. [2022-11-02 21:05:26,720 INFO L78 Accepts]: Start accepts. Automaton has 2990 states and 5087 transitions. Word has length 83 [2022-11-02 21:05:26,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:26,721 INFO L495 AbstractCegarLoop]: Abstraction has 2990 states and 5087 transitions. [2022-11-02 21:05:26,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:05:26,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2990 states and 5087 transitions. [2022-11-02 21:05:26,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-02 21:05:26,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:26,722 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:26,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:26,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:26,936 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-02 21:05:26,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:26,936 INFO L85 PathProgramCache]: Analyzing trace with hash -420145777, now seen corresponding path program 4 times [2022-11-02 21:05:26,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:26,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199316701] [2022-11-02 21:05:26,937 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 21:05:26,937 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:26,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:26,938 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:26,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 21:05:27,381 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 21:05:27,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:05:27,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 21:05:27,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:27,911 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:27,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:30,412 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:30,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:30,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199316701] [2022-11-02 21:05:30,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199316701] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:30,413 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:30,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-11-02 21:05:30,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230580290] [2022-11-02 21:05:30,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:30,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-02 21:05:30,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:30,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-02 21:05:30,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2022-11-02 21:05:30,416 INFO L87 Difference]: Start difference. First operand 2990 states and 5087 transitions. Second operand has 50 states, 50 states have (on average 2.36) internal successors, (118), 50 states have internal predecessors, (118), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:05:48,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:48,481 INFO L93 Difference]: Finished difference Result 3070 states and 5199 transitions. [2022-11-02 21:05:48,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-11-02 21:05:48,484 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.36) internal successors, (118), 50 states have internal predecessors, (118), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 95 [2022-11-02 21:05:48,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:48,492 INFO L225 Difference]: With dead ends: 3070 [2022-11-02 21:05:48,492 INFO L226 Difference]: Without dead ends: 3066 [2022-11-02 21:05:48,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=3791, Invalid=9319, Unknown=0, NotChecked=0, Total=13110 [2022-11-02 21:05:48,495 INFO L413 NwaCegarLoop]: 2884 mSDtfsCounter, 428 mSDsluCounter, 66245 mSDsCounter, 0 mSdLazyCounter, 2444 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 69129 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 2444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:48,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 69129 Invalid, 2843 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [399 Valid, 2444 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-02 21:05:48,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2022-11-02 21:05:48,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 3024. [2022-11-02 21:05:48,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3024 states, 1676 states have (on average 1.8651551312649164) internal successors, (3126), 3017 states have internal predecessors, (3126), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2022-11-02 21:05:48,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3024 states to 3024 states and 5133 transitions. [2022-11-02 21:05:48,825 INFO L78 Accepts]: Start accepts. Automaton has 3024 states and 5133 transitions. Word has length 95 [2022-11-02 21:05:48,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:48,825 INFO L495 AbstractCegarLoop]: Abstraction has 3024 states and 5133 transitions. [2022-11-02 21:05:48,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.36) internal successors, (118), 50 states have internal predecessors, (118), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:05:48,826 INFO L276 IsEmpty]: Start isEmpty. Operand 3024 states and 5133 transitions. [2022-11-02 21:05:48,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-02 21:05:48,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:48,827 INFO L195 NwaCegarLoop]: 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, 1, 1, 1] [2022-11-02 21:05:48,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-11-02 21:05:49,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:49,046 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-02 21:05:49,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:49,047 INFO L85 PathProgramCache]: Analyzing trace with hash 795332591, now seen corresponding path program 5 times [2022-11-02 21:05:49,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:49,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960890769] [2022-11-02 21:05:49,048 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 21:05:49,048 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:49,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:49,049 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:49,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 21:05:50,767 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-11-02 21:05:50,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:05:50,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 109 conjunts are in the unsatisfiable core [2022-11-02 21:05:50,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:50,830 INFO L390 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 7 [2022-11-02 21:05:50,989 INFO L390 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 [2022-11-02 21:05:51,006 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 21:05:51,006 INFO L390 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 13 treesize of output 13 [2022-11-02 21:05:51,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-02 21:05:51,059 INFO L390 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 [2022-11-02 21:05:51,200 INFO L390 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 22 treesize of output 10 [2022-11-02 21:05:51,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-02 21:05:51,288 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1910 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1910) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1911 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1911))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-02 21:05:51,305 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1912 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1912) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1913 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1913))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-02 21:05:51,423 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1919 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1919))) (exists ((v_ArrVal_1918 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1918) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-02 21:05:51,442 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1920 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1920) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16))) (exists ((v_ArrVal_1921 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1921) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-02 21:05:51,459 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1922 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1922) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_1923 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1923))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-02 21:05:51,475 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1925 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1925))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16))) (exists ((v_ArrVal_1924 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1924)))) is different from true [2022-11-02 21:05:51,491 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1926 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1926))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16))) (exists ((v_ArrVal_1927 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1927)))) is different from true [2022-11-02 21:05:51,550 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1931 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1931))) (exists ((v_ArrVal_1930 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1930))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-02 21:05:51,604 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1934 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1934) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1935 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1935))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-02 21:05:51,700 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1940 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1940))) (exists ((v_ArrVal_1941 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1941))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-02 21:05:51,896 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1951 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1951))) (exists ((v_ArrVal_1950 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1950))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-02 21:05:51,955 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1955 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1955))) (exists ((v_ArrVal_1954 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1954) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-02 21:05:51,972 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1956 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1956))) (exists ((v_ArrVal_1957 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1957))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-02 21:05:51,988 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1958 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1958))) (exists ((v_ArrVal_1959 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1959))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-02 21:05:52,006 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1961 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1961))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16))) (exists ((v_ArrVal_1960 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1960)))) is different from true [2022-11-02 21:05:52,109 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16))) (exists ((v_ArrVal_1967 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1967) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1966 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1966)))) is different from true [2022-11-02 21:05:52,126 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1969 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1969))) (exists ((v_ArrVal_1968 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1968) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-02 21:05:52,183 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1973 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1973) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16))) (exists ((v_ArrVal_1972 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1972) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-02 21:05:52,199 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1974 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1974) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1975 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1975))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-02 21:05:52,216 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1976 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1976))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16))) (exists ((v_ArrVal_1977 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1977)))) is different from true [2022-11-02 21:05:52,276 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1981 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1981) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_1980 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1980))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-02 21:05:52,380 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1987 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1987))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16))) (exists ((v_ArrVal_1986 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1986)))) is different from true [2022-11-02 21:05:52,398 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1988 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1988))) (exists ((v_ArrVal_1989 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1989))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-02 21:05:52,497 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1994 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1994) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_1995 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1995))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-02 21:05:52,512 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1997 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1997))) (exists ((v_ArrVal_1996 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1996))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-02 21:05:52,570 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 21:05:52,570 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-02 21:05:52,587 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-02 21:05:52,628 INFO L390 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 31 treesize of output 13 [2022-11-02 21:05:52,642 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-02 21:05:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 171 trivial. 800 not checked. [2022-11-02 21:05:52,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:53,769 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2088 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_2088) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_2088 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2089 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_2088) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_2089) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-02 21:05:53,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:53,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960890769] [2022-11-02 21:05:53,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960890769] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:05:53,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [306608973] [2022-11-02 21:05:53,780 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 21:05:53,781 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 21:05:53,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 21:05:53,783 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 21:05:53,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf611c86-db36-4282-acb1-bf07c09f022c/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2022-11-02 21:07:11,796 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-11-02 21:07:11,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:07:12,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 110 conjunts are in the unsatisfiable core [2022-11-02 21:07:12,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:12,026 INFO L390 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 7 [2022-11-02 21:07:12,183 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 21:07:12,183 INFO L390 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 13 treesize of output 13 [2022-11-02 21:07:12,235 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 21:07:12,250 INFO L390 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 [2022-11-02 21:07:12,261 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9