./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.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_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/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_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/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_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/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 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 --- 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 20:55:04,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:55:04,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:55:04,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:55:04,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:55:04,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:55:04,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:55:04,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:55:04,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:55:04,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:55:04,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:55:04,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:55:04,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:55:04,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:55:04,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:55:04,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:55:04,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:55:04,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:55:04,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:55:04,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:55:04,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:55:04,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:55:04,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:55:04,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:55:04,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:55:04,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:55:04,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:55:04,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:55:04,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:55:04,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:55:04,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:55:04,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:55:04,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:55:04,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:55:04,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:55:04,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:55:04,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:55:04,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:55:04,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:55:04,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:55:04,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:55:04,790 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-02 20:55:04,833 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:55:04,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:55:04,839 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:55:04,840 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:55:04,840 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:55:04,841 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:55:04,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:55:04,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:55:04,842 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:55:04,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:55:04,844 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:55:04,844 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:55:04,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:55:04,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:55:04,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:55:04,845 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 20:55:04,845 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 20:55:04,846 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 20:55:04,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:55:04,846 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:55:04,846 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:55:04,847 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:55:04,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:55:04,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:55:04,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:55:04,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:55:04,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:55:04,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:55:04,849 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:55:04,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:55:04,849 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_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 [2022-11-02 20:55:05,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:55:05,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:55:05,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:55:05,205 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:55:05,206 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:55:05,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2022-11-02 20:55:05,297 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/data/52dfbd150/f2dc4339cc0b4afbbbb6adc1f82bba0c/FLAG056af19c1 [2022-11-02 20:55:06,021 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:55:06,022 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2022-11-02 20:55:06,042 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/data/52dfbd150/f2dc4339cc0b4afbbbb6adc1f82bba0c/FLAG056af19c1 [2022-11-02 20:55:06,222 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/data/52dfbd150/f2dc4339cc0b4afbbbb6adc1f82bba0c [2022-11-02 20:55:06,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:55:06,226 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:55:06,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:55:06,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:55:06,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:55:06,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:55:06" (1/1) ... [2022-11-02 20:55:06,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f3ec11d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:06, skipping insertion in model container [2022-11-02 20:55:06,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:55:06" (1/1) ... [2022-11-02 20:55:06,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:55:06,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:55:06,983 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_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44118,44131] [2022-11-02 20:55:07,000 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_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44660,44673] [2022-11-02 20:55:07,100 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_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56247,56260] [2022-11-02 20:55:07,101 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_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56368,56381] [2022-11-02 20:55:07,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:55:07,121 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 20:55:07,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@14da84b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:07, skipping insertion in model container [2022-11-02 20:55:07,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:55:07,123 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-02 20:55:07,125 INFO L158 Benchmark]: Toolchain (without parser) took 897.83ms. Allocated memory is still 138.4MB. Free memory was 100.0MB in the beginning and 100.9MB in the end (delta: -829.7kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:55:07,126 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 90.2MB. Free memory was 60.2MB in the beginning and 60.1MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:55:07,127 INFO L158 Benchmark]: CACSL2BoogieTranslator took 892.56ms. Allocated memory is still 138.4MB. Free memory was 100.0MB in the beginning and 100.9MB in the end (delta: -829.7kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:55:07,129 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 90.2MB. Free memory was 60.2MB in the beginning and 60.1MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 892.56ms. Allocated memory is still 138.4MB. Free memory was 100.0MB in the beginning and 100.9MB in the end (delta: -829.7kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: 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_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/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_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/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_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/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 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 --- 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 20:55:09,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:55:09,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:55:09,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:55:09,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:55:09,420 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:55:09,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:55:09,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:55:09,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:55:09,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:55:09,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:55:09,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:55:09,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:55:09,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:55:09,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:55:09,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:55:09,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:55:09,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:55:09,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:55:09,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:55:09,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:55:09,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:55:09,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:55:09,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:55:09,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:55:09,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:55:09,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:55:09,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:55:09,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:55:09,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:55:09,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:55:09,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:55:09,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:55:09,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:55:09,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:55:09,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:55:09,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:55:09,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:55:09,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:55:09,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:55:09,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:55:09,474 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-02 20:55:09,499 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:55:09,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:55:09,499 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:55:09,500 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:55:09,501 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:55:09,501 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:55:09,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:55:09,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:55:09,502 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:55:09,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:55:09,503 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:55:09,503 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:55:09,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:55:09,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:55:09,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:55:09,504 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 20:55:09,504 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 20:55:09,504 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 20:55:09,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:55:09,505 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:55:09,505 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:55:09,505 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:55:09,505 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:55:09,505 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:55:09,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:55:09,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:55:09,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:55:09,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:55:09,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:55:09,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:55:09,507 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:55:09,507 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:55:09,507 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:55:09,507 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_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 [2022-11-02 20:55:09,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:55:09,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:55:09,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:55:09,952 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:55:09,956 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:55:09,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2022-11-02 20:55:10,050 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/data/0a3a009b4/8342576938a44d1baa50ea30807a830e/FLAG7a198d4f2 [2022-11-02 20:55:10,825 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:55:10,825 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2022-11-02 20:55:10,844 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/data/0a3a009b4/8342576938a44d1baa50ea30807a830e/FLAG7a198d4f2 [2022-11-02 20:55:11,033 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/data/0a3a009b4/8342576938a44d1baa50ea30807a830e [2022-11-02 20:55:11,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:55:11,037 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:55:11,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:55:11,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:55:11,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:55:11,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:55:11" (1/1) ... [2022-11-02 20:55:11,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5974b64f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:11, skipping insertion in model container [2022-11-02 20:55:11,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:55:11" (1/1) ... [2022-11-02 20:55:11,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:55:11,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:55:11,730 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_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44118,44131] [2022-11-02 20:55:11,749 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_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44660,44673] [2022-11-02 20:55:11,867 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_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56247,56260] [2022-11-02 20:55:11,868 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_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56368,56381] [2022-11-02 20:55:11,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:55:11,887 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-02 20:55:11,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:55:11,919 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_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44118,44131] [2022-11-02 20:55:11,921 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_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44660,44673] [2022-11-02 20:55:11,976 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_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56247,56260] [2022-11-02 20:55:11,977 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_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56368,56381] [2022-11-02 20:55:11,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:55:11,986 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:55:12,048 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_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44118,44131] [2022-11-02 20:55:12,051 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_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44660,44673] [2022-11-02 20:55:12,139 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_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56247,56260] [2022-11-02 20:55:12,140 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_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56368,56381] [2022-11-02 20:55:12,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:55:12,206 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:55:12,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:12 WrapperNode [2022-11-02 20:55:12,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:55:12,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:55:12,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:55:12,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:55:12,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:12" (1/1) ... [2022-11-02 20:55:12,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:12" (1/1) ... [2022-11-02 20:55:12,351 INFO L138 Inliner]: procedures = 285, calls = 294, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1042 [2022-11-02 20:55:12,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:55:12,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:55:12,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:55:12,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:55:12,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:12" (1/1) ... [2022-11-02 20:55:12,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:12" (1/1) ... [2022-11-02 20:55:12,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:12" (1/1) ... [2022-11-02 20:55:12,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:12" (1/1) ... [2022-11-02 20:55:12,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:12" (1/1) ... [2022-11-02 20:55:12,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:12" (1/1) ... [2022-11-02 20:55:12,514 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:12" (1/1) ... [2022-11-02 20:55:12,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:12" (1/1) ... [2022-11-02 20:55:12,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:55:12,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:55:12,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:55:12,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:55:12,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:12" (1/1) ... [2022-11-02 20:55:12,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:55:12,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:55:12,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:55:12,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:55:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-02 20:55:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-02 20:55:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:55:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-02 20:55:12,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:55:12,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:55:12,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-02 20:55:12,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-02 20:55:12,628 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-11-02 20:55:12,628 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-11-02 20:55:12,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 20:55:12,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 20:55:12,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:55:12,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:55:12,630 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-11-02 20:55:12,630 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-11-02 20:55:12,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:55:12,631 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-11-02 20:55:12,631 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-11-02 20:55:12,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:55:12,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:55:12,938 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:55:12,941 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:55:18,700 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:55:18,723 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:55:18,728 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-02 20:55:18,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:55:18 BoogieIcfgContainer [2022-11-02 20:55:18,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:55:18,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:55:18,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:55:18,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:55:18,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:55:11" (1/3) ... [2022-11-02 20:55:18,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e8c48b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:55:18, skipping insertion in model container [2022-11-02 20:55:18,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:12" (2/3) ... [2022-11-02 20:55:18,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e8c48b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:55:18, skipping insertion in model container [2022-11-02 20:55:18,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:55:18" (3/3) ... [2022-11-02 20:55:18,747 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test6-1.i [2022-11-02 20:55:18,768 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:55:18,768 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 531 error locations. [2022-11-02 20:55:18,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:55:18,884 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;@36389b8c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:55:18,885 INFO L358 AbstractCegarLoop]: Starting to check reachability of 531 error locations. [2022-11-02 20:55:18,897 INFO L276 IsEmpty]: Start isEmpty. Operand has 1083 states, 534 states have (on average 2.2284644194756553) internal successors, (1190), 1065 states have internal predecessors, (1190), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-02 20:55:18,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 20:55:18,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:18,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 20:55:18,906 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:55:18,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:18,914 INFO L85 PathProgramCache]: Analyzing trace with hash 77521, now seen corresponding path program 1 times [2022-11-02 20:55:18,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:18,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669502759] [2022-11-02 20:55:18,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:18,933 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:18,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:18,947 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:18,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:55:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:19,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:55:19,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:19,278 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 20:55:19,314 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 20:55:19,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:55:19,315 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:19,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669502759] [2022-11-02 20:55:19,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669502759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:19,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:19,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:55:19,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96169196] [2022-11-02 20:55:19,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:19,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:55:19,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:19,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:55:19,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:55:19,412 INFO L87 Difference]: Start difference. First operand has 1083 states, 534 states have (on average 2.2284644194756553) internal successors, (1190), 1065 states have internal predecessors, (1190), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) 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 20:55:22,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:22,078 INFO L93 Difference]: Finished difference Result 1162 states and 1229 transitions. [2022-11-02 20:55:22,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:55:22,081 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 20:55:22,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:22,103 INFO L225 Difference]: With dead ends: 1162 [2022-11-02 20:55:22,103 INFO L226 Difference]: Without dead ends: 1160 [2022-11-02 20:55:22,105 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 20:55:22,109 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 714 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:22,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 1044 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-02 20:55:22,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-11-02 20:55:22,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1103. [2022-11-02 20:55:22,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 568 states have (on average 2.084507042253521) internal successors, (1184), 1086 states have internal predecessors, (1184), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:55:22,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1210 transitions. [2022-11-02 20:55:22,252 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1210 transitions. Word has length 3 [2022-11-02 20:55:22,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:22,252 INFO L495 AbstractCegarLoop]: Abstraction has 1103 states and 1210 transitions. [2022-11-02 20:55:22,253 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 20:55:22,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1210 transitions. [2022-11-02 20:55:22,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 20:55:22,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:22,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 20:55:22,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:22,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:22,468 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:55:22,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:22,469 INFO L85 PathProgramCache]: Analyzing trace with hash 77522, now seen corresponding path program 1 times [2022-11-02 20:55:22,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:22,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100978993] [2022-11-02 20:55:22,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:22,471 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:22,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:22,472 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:22,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:55:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:22,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:55:22,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:22,661 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 20:55:22,690 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 20:55:22,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:55:22,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:22,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100978993] [2022-11-02 20:55:22,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100978993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:22,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:22,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:55:22,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163549875] [2022-11-02 20:55:22,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:22,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:55:22,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:22,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:55:22,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:55:22,697 INFO L87 Difference]: Start difference. First operand 1103 states and 1210 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 20:55:26,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:26,877 INFO L93 Difference]: Finished difference Result 1497 states and 1638 transitions. [2022-11-02 20:55:26,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:55:26,878 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 20:55:26,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:26,884 INFO L225 Difference]: With dead ends: 1497 [2022-11-02 20:55:26,885 INFO L226 Difference]: Without dead ends: 1497 [2022-11-02 20:55:26,885 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 20:55:26,887 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 418 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:26,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 1538 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-02 20:55:26,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2022-11-02 20:55:26,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1307. [2022-11-02 20:55:26,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 771 states have (on average 2.0700389105058368) internal successors, (1596), 1288 states have internal predecessors, (1596), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-02 20:55:26,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1626 transitions. [2022-11-02 20:55:26,934 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1626 transitions. Word has length 3 [2022-11-02 20:55:26,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:26,934 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 1626 transitions. [2022-11-02 20:55:26,934 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 20:55:26,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1626 transitions. [2022-11-02 20:55:26,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:55:26,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:26,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:26,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:27,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:27,149 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:55:27,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:27,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1111693489, now seen corresponding path program 1 times [2022-11-02 20:55:27,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:27,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885806242] [2022-11-02 20:55:27,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:27,151 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:27,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:27,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:27,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:55:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:27,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:55:27,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:27,384 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 20:55:27,392 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 20:55:27,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:55:27,496 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 20:55:27,520 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:55:27,521 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 20:55:27,563 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 20:55:27,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:55:27,564 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:27,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885806242] [2022-11-02 20:55:27,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885806242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:27,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:27,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:55:27,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517495262] [2022-11-02 20:55:27,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:27,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:55:27,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:27,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:55:27,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:55:27,570 INFO L87 Difference]: Start difference. First operand 1307 states and 1626 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 20:55:34,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:34,342 INFO L93 Difference]: Finished difference Result 1997 states and 2371 transitions. [2022-11-02 20:55:34,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:55:34,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 20:55:34,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:34,350 INFO L225 Difference]: With dead ends: 1997 [2022-11-02 20:55:34,350 INFO L226 Difference]: Without dead ends: 1997 [2022-11-02 20:55:34,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 20:55:34,352 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 719 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:34,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 1587 Invalid, 1812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-02 20:55:34,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2022-11-02 20:55:34,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1452. [2022-11-02 20:55:34,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 916 states have (on average 2.0513100436681224) internal successors, (1879), 1433 states have internal predecessors, (1879), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-02 20:55:34,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1909 transitions. [2022-11-02 20:55:34,391 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1909 transitions. Word has length 8 [2022-11-02 20:55:34,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:34,392 INFO L495 AbstractCegarLoop]: Abstraction has 1452 states and 1909 transitions. [2022-11-02 20:55:34,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 20:55:34,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1909 transitions. [2022-11-02 20:55:34,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:55:34,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:34,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:34,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:34,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:34,606 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:55:34,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:34,606 INFO L85 PathProgramCache]: Analyzing trace with hash -102759776, now seen corresponding path program 1 times [2022-11-02 20:55:34,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:34,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309024813] [2022-11-02 20:55:34,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:34,607 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:34,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:34,610 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:34,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:55:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:34,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:55:34,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:34,783 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 20:55:34,815 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 20:55:34,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:55:34,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:34,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309024813] [2022-11-02 20:55:34,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309024813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:34,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:34,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:55:34,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262164928] [2022-11-02 20:55:34,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:34,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:55:34,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:34,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:55:34,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:55:34,823 INFO L87 Difference]: Start difference. First operand 1452 states and 1909 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:39,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:39,333 INFO L93 Difference]: Finished difference Result 2430 states and 3107 transitions. [2022-11-02 20:55:39,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:55:39,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:55:39,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:39,345 INFO L225 Difference]: With dead ends: 2430 [2022-11-02 20:55:39,345 INFO L226 Difference]: Without dead ends: 2430 [2022-11-02 20:55:39,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 20:55:39,347 INFO L413 NwaCegarLoop]: 1014 mSDtfsCounter, 2141 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2147 SdHoareTripleChecker+Valid, 1973 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:39,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2147 Valid, 1973 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-02 20:55:39,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2022-11-02 20:55:39,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 1407. [2022-11-02 20:55:39,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 916 states have (on average 1.9868995633187774) internal successors, (1820), 1388 states have internal predecessors, (1820), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-02 20:55:39,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 1850 transitions. [2022-11-02 20:55:39,392 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 1850 transitions. Word has length 9 [2022-11-02 20:55:39,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:39,392 INFO L495 AbstractCegarLoop]: Abstraction has 1407 states and 1850 transitions. [2022-11-02 20:55:39,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:39,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 1850 transitions. [2022-11-02 20:55:39,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:55:39,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:39,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:39,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:39,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:39,608 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:55:39,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:39,608 INFO L85 PathProgramCache]: Analyzing trace with hash -102759775, now seen corresponding path program 1 times [2022-11-02 20:55:39,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:39,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480726145] [2022-11-02 20:55:39,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:39,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:39,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:39,610 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:39,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:55:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:39,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:55:39,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:39,821 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 20:55:39,889 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 20:55:39,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:55:39,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:39,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480726145] [2022-11-02 20:55:39,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480726145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:39,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:39,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:55:39,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037534727] [2022-11-02 20:55:39,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:39,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:55:39,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:39,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:55:39,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:55:39,893 INFO L87 Difference]: Start difference. First operand 1407 states and 1850 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:44,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:44,660 INFO L93 Difference]: Finished difference Result 2046 states and 2685 transitions. [2022-11-02 20:55:44,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:55:44,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:55:44,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:44,669 INFO L225 Difference]: With dead ends: 2046 [2022-11-02 20:55:44,669 INFO L226 Difference]: Without dead ends: 2046 [2022-11-02 20:55:44,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 20:55:44,676 INFO L413 NwaCegarLoop]: 1193 mSDtfsCounter, 1375 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 2096 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:44,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1378 Valid, 2096 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-02 20:55:44,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2022-11-02 20:55:44,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 1397. [2022-11-02 20:55:44,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 916 states have (on average 1.960698689956332) internal successors, (1796), 1378 states have internal predecessors, (1796), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-02 20:55:44,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 1826 transitions. [2022-11-02 20:55:44,717 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 1826 transitions. Word has length 9 [2022-11-02 20:55:44,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:44,718 INFO L495 AbstractCegarLoop]: Abstraction has 1397 states and 1826 transitions. [2022-11-02 20:55:44,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:44,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 1826 transitions. [2022-11-02 20:55:44,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:55:44,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:44,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:44,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:44,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:44,932 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr516ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:55:44,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:44,933 INFO L85 PathProgramCache]: Analyzing trace with hash -856298529, now seen corresponding path program 1 times [2022-11-02 20:55:44,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:44,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372571698] [2022-11-02 20:55:44,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:44,934 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:44,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:44,935 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:44,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:55:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:45,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:55:45,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:45,186 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 20:55:45,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:55:45,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:45,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372571698] [2022-11-02 20:55:45,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372571698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:45,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:45,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:55:45,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011920009] [2022-11-02 20:55:45,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:45,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:55:45,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:45,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:55:45,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:55:45,189 INFO L87 Difference]: Start difference. First operand 1397 states and 1826 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 20:55:46,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:46,111 INFO L93 Difference]: Finished difference Result 1873 states and 2393 transitions. [2022-11-02 20:55:46,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:55:46,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 20:55:46,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:46,118 INFO L225 Difference]: With dead ends: 1873 [2022-11-02 20:55:46,118 INFO L226 Difference]: Without dead ends: 1873 [2022-11-02 20:55:46,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 20:55:46,120 INFO L413 NwaCegarLoop]: 1156 mSDtfsCounter, 546 mSDsluCounter, 1966 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:46,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 3122 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:55:46,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2022-11-02 20:55:46,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1648. [2022-11-02 20:55:46,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1167 states have (on average 1.974293059125964) internal successors, (2304), 1629 states have internal predecessors, (2304), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-02 20:55:46,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2334 transitions. [2022-11-02 20:55:46,164 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2334 transitions. Word has length 11 [2022-11-02 20:55:46,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:46,165 INFO L495 AbstractCegarLoop]: Abstraction has 1648 states and 2334 transitions. [2022-11-02 20:55:46,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 20:55:46,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2334 transitions. [2022-11-02 20:55:46,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:55:46,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:46,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:46,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:46,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:46,386 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:55:46,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:46,387 INFO L85 PathProgramCache]: Analyzing trace with hash 2117571646, now seen corresponding path program 1 times [2022-11-02 20:55:46,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:46,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669010361] [2022-11-02 20:55:46,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:46,388 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:46,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:46,389 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:46,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:55:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:46,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:55:46,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:46,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:55:46,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:55:46,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:55:46,659 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 30 treesize of output 39 [2022-11-02 20:55:46,736 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:55:46,737 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 70 treesize of output 26 [2022-11-02 20:55:46,757 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 20:55:46,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:55:46,758 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:46,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669010361] [2022-11-02 20:55:46,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669010361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:46,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:46,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:55:46,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669767950] [2022-11-02 20:55:46,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:46,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:55:46,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:46,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:55:46,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:55:46,760 INFO L87 Difference]: Start difference. First operand 1648 states and 2334 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:48,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:48,594 INFO L93 Difference]: Finished difference Result 1654 states and 2037 transitions. [2022-11-02 20:55:48,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:55:48,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 20:55:48,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:48,605 INFO L225 Difference]: With dead ends: 1654 [2022-11-02 20:55:48,606 INFO L226 Difference]: Without dead ends: 1654 [2022-11-02 20:55:48,606 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 20:55:48,607 INFO L413 NwaCegarLoop]: 1040 mSDtfsCounter, 357 mSDsluCounter, 1937 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:48,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 2977 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-02 20:55:48,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2022-11-02 20:55:48,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 1290. [2022-11-02 20:55:48,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 811 states have (on average 1.9506781750924784) internal successors, (1582), 1273 states have internal predecessors, (1582), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:55:48,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1608 transitions. [2022-11-02 20:55:48,653 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1608 transitions. Word has length 14 [2022-11-02 20:55:48,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:48,653 INFO L495 AbstractCegarLoop]: Abstraction has 1290 states and 1608 transitions. [2022-11-02 20:55:48,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:48,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1608 transitions. [2022-11-02 20:55:48,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:55:48,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:48,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:48,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-02 20:55:48,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:48,870 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:55:48,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:48,870 INFO L85 PathProgramCache]: Analyzing trace with hash 769788685, now seen corresponding path program 1 times [2022-11-02 20:55:48,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:48,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120155856] [2022-11-02 20:55:48,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:48,871 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:48,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:48,872 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:48,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:55:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:49,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:55:49,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:49,123 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 20:55:49,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:55:49,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:49,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120155856] [2022-11-02 20:55:49,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120155856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:49,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:49,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:55:49,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738613503] [2022-11-02 20:55:49,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:49,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:55:49,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:49,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:55:49,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:55:49,126 INFO L87 Difference]: Start difference. First operand 1290 states and 1608 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:49,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:49,162 INFO L93 Difference]: Finished difference Result 1230 states and 1522 transitions. [2022-11-02 20:55:49,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:55:49,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-02 20:55:49,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:49,167 INFO L225 Difference]: With dead ends: 1230 [2022-11-02 20:55:49,167 INFO L226 Difference]: Without dead ends: 1230 [2022-11-02 20:55:49,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 20:55:49,168 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 959 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 1096 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 20:55:49,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 1096 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:55:49,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2022-11-02 20:55:49,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1230. [2022-11-02 20:55:49,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 775 states have (on average 1.9303225806451614) internal successors, (1496), 1213 states have internal predecessors, (1496), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:55:49,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1522 transitions. [2022-11-02 20:55:49,197 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1522 transitions. Word has length 19 [2022-11-02 20:55:49,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:49,197 INFO L495 AbstractCegarLoop]: Abstraction has 1230 states and 1522 transitions. [2022-11-02 20:55:49,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:49,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1522 transitions. [2022-11-02 20:55:49,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-02 20:55:49,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:49,199 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] [2022-11-02 20:55:49,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:49,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:49,413 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:55:49,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:49,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1032548102, now seen corresponding path program 1 times [2022-11-02 20:55:49,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:49,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095845003] [2022-11-02 20:55:49,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:49,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:49,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:49,415 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:49,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:55:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:49,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:55:49,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:49,647 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 20:55:49,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:55:49,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:49,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095845003] [2022-11-02 20:55:49,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095845003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:49,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:49,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:55:49,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701701604] [2022-11-02 20:55:49,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:49,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:55:49,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:49,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:55:49,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:55:49,651 INFO L87 Difference]: Start difference. First operand 1230 states and 1522 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:49,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:49,734 INFO L93 Difference]: Finished difference Result 1202 states and 1466 transitions. [2022-11-02 20:55:49,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:55:49,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-02 20:55:49,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:49,739 INFO L225 Difference]: With dead ends: 1202 [2022-11-02 20:55:49,739 INFO L226 Difference]: Without dead ends: 1202 [2022-11-02 20:55:49,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 20:55:49,742 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 930 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 2028 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 20:55:49,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 2028 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:55:49,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2022-11-02 20:55:49,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1200. [2022-11-02 20:55:49,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 759 states have (on average 1.8945981554677207) internal successors, (1438), 1183 states have internal predecessors, (1438), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:55:49,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1464 transitions. [2022-11-02 20:55:49,762 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1464 transitions. Word has length 21 [2022-11-02 20:55:49,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:49,763 INFO L495 AbstractCegarLoop]: Abstraction has 1200 states and 1464 transitions. [2022-11-02 20:55:49,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:49,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1464 transitions. [2022-11-02 20:55:49,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-02 20:55:49,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:49,764 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] [2022-11-02 20:55:49,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:49,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:49,982 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:55:49,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:49,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308372, now seen corresponding path program 1 times [2022-11-02 20:55:49,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:49,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [989572495] [2022-11-02 20:55:49,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:49,984 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:49,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:49,985 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:49,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:55:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:50,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:55:50,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:50,209 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 20:55:50,332 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 20:55:50,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:55:50,332 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:50,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [989572495] [2022-11-02 20:55:50,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [989572495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:50,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:50,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:55:50,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809764086] [2022-11-02 20:55:50,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:50,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:55:50,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:50,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:55:50,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:55:50,335 INFO L87 Difference]: Start difference. First operand 1200 states and 1464 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:54,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:54,825 INFO L93 Difference]: Finished difference Result 2184 states and 2665 transitions. [2022-11-02 20:55:54,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:55:54,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-02 20:55:54,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:54,833 INFO L225 Difference]: With dead ends: 2184 [2022-11-02 20:55:54,833 INFO L226 Difference]: Without dead ends: 2184 [2022-11-02 20:55:54,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:55:54,834 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 2037 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2040 SdHoareTripleChecker+Valid, 2019 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:54,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2040 Valid, 2019 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1841 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-02 20:55:54,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2022-11-02 20:55:54,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 1196. [2022-11-02 20:55:54,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 759 states have (on average 1.8840579710144927) internal successors, (1430), 1179 states have internal predecessors, (1430), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:55:54,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1456 transitions. [2022-11-02 20:55:54,860 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1456 transitions. Word has length 35 [2022-11-02 20:55:54,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:54,860 INFO L495 AbstractCegarLoop]: Abstraction has 1196 states and 1456 transitions. [2022-11-02 20:55:54,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:54,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1456 transitions. [2022-11-02 20:55:54,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-02 20:55:54,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:54,862 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] [2022-11-02 20:55:54,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:55,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:55,075 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:55:55,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:55,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308373, now seen corresponding path program 1 times [2022-11-02 20:55:55,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:55,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269347069] [2022-11-02 20:55:55,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:55,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:55,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:55,078 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:55,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:55:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:55,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:55:55,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:55,331 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 20:55:55,570 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 20:55:55,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:55:55,571 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:55,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269347069] [2022-11-02 20:55:55,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269347069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:55,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:55,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:55:55,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885092626] [2022-11-02 20:55:55,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:55,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:55:55,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:55,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:55:55,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:55:55,572 INFO L87 Difference]: Start difference. First operand 1196 states and 1456 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:00,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:00,659 INFO L93 Difference]: Finished difference Result 1806 states and 2219 transitions. [2022-11-02 20:56:00,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:56:00,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-02 20:56:00,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:00,667 INFO L225 Difference]: With dead ends: 1806 [2022-11-02 20:56:00,667 INFO L226 Difference]: Without dead ends: 1806 [2022-11-02 20:56:00,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:56:00,668 INFO L413 NwaCegarLoop]: 1234 mSDtfsCounter, 1782 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1782 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:00,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1782 Valid, 2595 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1614 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-02 20:56:00,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2022-11-02 20:56:00,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1192. [2022-11-02 20:56:00,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 759 states have (on average 1.8735177865612649) internal successors, (1422), 1175 states have internal predecessors, (1422), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:56:00,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1448 transitions. [2022-11-02 20:56:00,691 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1448 transitions. Word has length 35 [2022-11-02 20:56:00,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:00,692 INFO L495 AbstractCegarLoop]: Abstraction has 1192 states and 1448 transitions. [2022-11-02 20:56:00,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:00,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1448 transitions. [2022-11-02 20:56:00,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-02 20:56:00,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:00,693 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] [2022-11-02 20:56:00,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-11-02 20:56:00,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:00,907 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:56:00,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:00,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2063927218, now seen corresponding path program 1 times [2022-11-02 20:56:00,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:00,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839039528] [2022-11-02 20:56:00,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:00,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:00,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:00,910 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:00,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:56:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:01,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:56:01,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:01,294 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 20:56:01,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:01,295 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:01,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839039528] [2022-11-02 20:56:01,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839039528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:01,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:01,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:56:01,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62067431] [2022-11-02 20:56:01,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:01,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:56:01,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:01,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:56:01,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:56:01,297 INFO L87 Difference]: Start difference. First operand 1192 states and 1448 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:01,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:01,369 INFO L93 Difference]: Finished difference Result 1180 states and 1428 transitions. [2022-11-02 20:56:01,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:56:01,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-02 20:56:01,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:01,374 INFO L225 Difference]: With dead ends: 1180 [2022-11-02 20:56:01,374 INFO L226 Difference]: Without dead ends: 1180 [2022-11-02 20:56:01,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 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 20:56:01,375 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 906 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 2006 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 20:56:01,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 2006 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:01,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2022-11-02 20:56:01,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1180. [2022-11-02 20:56:01,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 747 states have (on average 1.8768406961178046) internal successors, (1402), 1163 states have internal predecessors, (1402), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:56:01,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1428 transitions. [2022-11-02 20:56:01,395 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1428 transitions. Word has length 54 [2022-11-02 20:56:01,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:01,396 INFO L495 AbstractCegarLoop]: Abstraction has 1180 states and 1428 transitions. [2022-11-02 20:56:01,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:01,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1428 transitions. [2022-11-02 20:56:01,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:56:01,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:01,397 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] [2022-11-02 20:56:01,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:01,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:01,614 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:56:01,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:01,614 INFO L85 PathProgramCache]: Analyzing trace with hash -203140862, now seen corresponding path program 1 times [2022-11-02 20:56:01,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:01,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046911595] [2022-11-02 20:56:01,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:01,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:01,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:01,618 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:01,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:56:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:02,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:56:02,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:02,136 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-02 20:56:02,137 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-11-02 20:56:02,222 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-02 20:56:02,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-02 20:56:02,749 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 20:56:02,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:02,749 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:02,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046911595] [2022-11-02 20:56:02,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046911595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:02,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:02,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:56:02,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45520598] [2022-11-02 20:56:02,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:02,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:56:02,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:02,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:56:02,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:56:02,751 INFO L87 Difference]: Start difference. First operand 1180 states and 1428 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:07,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:07,369 INFO L93 Difference]: Finished difference Result 2641 states and 3168 transitions. [2022-11-02 20:56:07,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:56:07,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-02 20:56:07,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:07,376 INFO L225 Difference]: With dead ends: 2641 [2022-11-02 20:56:07,376 INFO L226 Difference]: Without dead ends: 2641 [2022-11-02 20:56:07,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:07,377 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 1427 mSDsluCounter, 2133 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 3016 SdHoareTripleChecker+Invalid, 2000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 450 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:07,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1427 Valid, 3016 Invalid, 2000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1541 Invalid, 0 Unknown, 450 Unchecked, 4.5s Time] [2022-11-02 20:56:07,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2022-11-02 20:56:07,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 1617. [2022-11-02 20:56:07,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1169 states have (on average 1.872540633019675) internal successors, (2189), 1588 states have internal predecessors, (2189), 25 states have call successors, (25), 8 states have call predecessors, (25), 7 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-02 20:56:07,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2239 transitions. [2022-11-02 20:56:07,409 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2239 transitions. Word has length 62 [2022-11-02 20:56:07,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:07,410 INFO L495 AbstractCegarLoop]: Abstraction has 1617 states and 2239 transitions. [2022-11-02 20:56:07,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:07,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2239 transitions. [2022-11-02 20:56:07,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:56:07,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:07,411 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] [2022-11-02 20:56:07,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:07,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:07,628 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:56:07,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:07,629 INFO L85 PathProgramCache]: Analyzing trace with hash -203140861, now seen corresponding path program 1 times [2022-11-02 20:56:07,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:07,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100670444] [2022-11-02 20:56:07,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:07,630 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:07,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:07,633 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:07,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:56:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:08,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:56:08,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:08,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:08,166 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 20:56:08,251 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:56:08,252 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-02 20:56:09,054 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 20:56:09,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:09,055 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:09,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100670444] [2022-11-02 20:56:09,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100670444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:09,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:09,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:56:09,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200899574] [2022-11-02 20:56:09,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:09,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:56:09,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:09,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:56:09,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:56:09,056 INFO L87 Difference]: Start difference. First operand 1617 states and 2239 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:14,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:14,908 INFO L93 Difference]: Finished difference Result 1623 states and 2246 transitions. [2022-11-02 20:56:14,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:56:14,909 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-02 20:56:14,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:14,914 INFO L225 Difference]: With dead ends: 1623 [2022-11-02 20:56:14,914 INFO L226 Difference]: Without dead ends: 1623 [2022-11-02 20:56:14,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:14,915 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 111 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 2104 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 2108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:14,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 2795 Invalid, 2108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2104 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-02 20:56:14,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2022-11-02 20:56:14,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1622. [2022-11-02 20:56:14,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1173 states have (on average 1.8695652173913044) internal successors, (2193), 1592 states have internal predecessors, (2193), 26 states have call successors, (26), 9 states have call predecessors, (26), 7 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-02 20:56:14,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 2245 transitions. [2022-11-02 20:56:14,943 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 2245 transitions. Word has length 62 [2022-11-02 20:56:14,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:14,944 INFO L495 AbstractCegarLoop]: Abstraction has 1622 states and 2245 transitions. [2022-11-02 20:56:14,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:14,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 2245 transitions. [2022-11-02 20:56:14,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 20:56:14,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:14,945 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] [2022-11-02 20:56:14,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-11-02 20:56:15,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:15,159 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:56:15,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:15,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1864793253, now seen corresponding path program 1 times [2022-11-02 20:56:15,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:15,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304471001] [2022-11-02 20:56:15,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:15,160 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:15,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:15,161 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:15,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:56:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:15,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:56:15,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:15,599 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 20:56:15,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:15,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:15,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304471001] [2022-11-02 20:56:15,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304471001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:15,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:15,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:56:15,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386828361] [2022-11-02 20:56:15,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:15,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:56:15,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:15,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:56:15,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:56:15,603 INFO L87 Difference]: Start difference. First operand 1622 states and 2245 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:15,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:15,741 INFO L93 Difference]: Finished difference Result 1648 states and 2272 transitions. [2022-11-02 20:56:15,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:56:15,742 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-02 20:56:15,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:15,753 INFO L225 Difference]: With dead ends: 1648 [2022-11-02 20:56:15,753 INFO L226 Difference]: Without dead ends: 1648 [2022-11-02 20:56:15,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:56:15,755 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 19 mSDsluCounter, 3890 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4865 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:15,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 4865 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:15,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2022-11-02 20:56:15,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1646. [2022-11-02 20:56:15,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1646 states, 1191 states have (on average 1.8606213266162888) internal successors, (2216), 1612 states have internal predecessors, (2216), 28 states have call successors, (28), 13 states have call predecessors, (28), 11 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-02 20:56:15,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2272 transitions. [2022-11-02 20:56:15,821 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2272 transitions. Word has length 68 [2022-11-02 20:56:15,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:15,822 INFO L495 AbstractCegarLoop]: Abstraction has 1646 states and 2272 transitions. [2022-11-02 20:56:15,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:15,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2272 transitions. [2022-11-02 20:56:15,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 20:56:15,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:15,823 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] [2022-11-02 20:56:15,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:16,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:16,039 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:56:16,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:16,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1913615011, now seen corresponding path program 1 times [2022-11-02 20:56:16,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:16,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135884018] [2022-11-02 20:56:16,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:16,040 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:16,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:16,041 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:16,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:56:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:16,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:56:16,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:16,604 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 20:56:16,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:16,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:16,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135884018] [2022-11-02 20:56:16,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135884018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:16,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:16,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:56:16,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956232845] [2022-11-02 20:56:16,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:16,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:56:16,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:16,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:56:16,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:56:16,606 INFO L87 Difference]: Start difference. First operand 1646 states and 2272 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 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 20:56:16,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:16,829 INFO L93 Difference]: Finished difference Result 1658 states and 2286 transitions. [2022-11-02 20:56:16,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:56:16,830 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 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 68 [2022-11-02 20:56:16,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:16,840 INFO L225 Difference]: With dead ends: 1658 [2022-11-02 20:56:16,841 INFO L226 Difference]: Without dead ends: 1658 [2022-11-02 20:56:16,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:16,842 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 23 mSDsluCounter, 2824 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 3799 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:16,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 3799 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:56:16,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2022-11-02 20:56:16,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1649. [2022-11-02 20:56:16,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1193 states have (on average 1.859178541492037) internal successors, (2218), 1614 states have internal predecessors, (2218), 28 states have call successors, (28), 13 states have call predecessors, (28), 12 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2022-11-02 20:56:16,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2275 transitions. [2022-11-02 20:56:16,885 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2275 transitions. Word has length 68 [2022-11-02 20:56:16,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:16,886 INFO L495 AbstractCegarLoop]: Abstraction has 1649 states and 2275 transitions. [2022-11-02 20:56:16,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 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 20:56:16,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2275 transitions. [2022-11-02 20:56:16,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-02 20:56:16,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:16,887 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 20:56:16,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:17,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:17,103 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:56:17,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:17,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1847999061, now seen corresponding path program 1 times [2022-11-02 20:56:17,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:17,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203686063] [2022-11-02 20:56:17,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:17,104 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:17,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:17,105 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:17,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:56:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:17,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:56:17,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:17,601 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 20:56:17,836 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-02 20:56:17,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 20:56:17,848 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 20:56:17,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:17,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:17,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203686063] [2022-11-02 20:56:17,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203686063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:17,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:17,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:56:17,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737293999] [2022-11-02 20:56:17,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:17,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:56:17,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:17,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:56:17,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:56:17,851 INFO L87 Difference]: Start difference. First operand 1649 states and 2275 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:56:22,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:22,647 INFO L93 Difference]: Finished difference Result 2771 states and 3753 transitions. [2022-11-02 20:56:22,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:56:22,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 73 [2022-11-02 20:56:22,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:22,665 INFO L225 Difference]: With dead ends: 2771 [2022-11-02 20:56:22,666 INFO L226 Difference]: Without dead ends: 2771 [2022-11-02 20:56:22,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:22,667 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 1430 mSDsluCounter, 2180 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 924 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:22,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1436 Valid, 2987 Invalid, 3053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2110 Invalid, 0 Unknown, 924 Unchecked, 4.7s Time] [2022-11-02 20:56:22,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2771 states. [2022-11-02 20:56:22,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2771 to 1648. [2022-11-02 20:56:22,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1193 states have (on average 1.8575020955574182) internal successors, (2216), 1613 states have internal predecessors, (2216), 28 states have call successors, (28), 13 states have call predecessors, (28), 12 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2022-11-02 20:56:22,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2273 transitions. [2022-11-02 20:56:22,707 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2273 transitions. Word has length 73 [2022-11-02 20:56:22,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:22,707 INFO L495 AbstractCegarLoop]: Abstraction has 1648 states and 2273 transitions. [2022-11-02 20:56:22,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:56:22,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2273 transitions. [2022-11-02 20:56:22,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-02 20:56:22,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:22,714 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 20:56:22,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:22,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:22,936 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:56:22,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:22,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1847999062, now seen corresponding path program 1 times [2022-11-02 20:56:22,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:22,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462112813] [2022-11-02 20:56:22,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:22,937 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:22,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:22,938 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:22,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:56:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:23,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:56:23,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:23,439 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 20:56:23,447 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 20:56:26,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:56:26,084 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 20:56:26,095 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:56:26,096 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 20:56:26,128 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 20:56:26,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:26,128 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:26,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462112813] [2022-11-02 20:56:26,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462112813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:26,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:26,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:56:26,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172281731] [2022-11-02 20:56:26,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:26,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:56:26,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:26,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:56:26,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=29, Unknown=1, NotChecked=0, Total=42 [2022-11-02 20:56:26,130 INFO L87 Difference]: Start difference. First operand 1648 states and 2273 transitions. Second operand has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:56:33,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:33,851 INFO L93 Difference]: Finished difference Result 2842 states and 3878 transitions. [2022-11-02 20:56:33,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:56:33,853 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 73 [2022-11-02 20:56:33,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:33,858 INFO L225 Difference]: With dead ends: 2842 [2022-11-02 20:56:33,858 INFO L226 Difference]: Without dead ends: 2842 [2022-11-02 20:56:33,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=17, Invalid=38, Unknown=1, NotChecked=0, Total=56 [2022-11-02 20:56:33,859 INFO L413 NwaCegarLoop]: 1061 mSDtfsCounter, 2203 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 3073 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2209 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 4166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 3073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1063 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:33,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2209 Valid, 3127 Invalid, 4166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 3073 Invalid, 0 Unknown, 1063 Unchecked, 7.6s Time] [2022-11-02 20:56:33,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2022-11-02 20:56:33,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1644. [2022-11-02 20:56:33,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1644 states, 1197 states have (on average 1.8412698412698412) internal successors, (2204), 1609 states have internal predecessors, (2204), 28 states have call successors, (28), 13 states have call predecessors, (28), 12 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2022-11-02 20:56:33,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2261 transitions. [2022-11-02 20:56:33,892 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2261 transitions. Word has length 73 [2022-11-02 20:56:33,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:33,893 INFO L495 AbstractCegarLoop]: Abstraction has 1644 states and 2261 transitions. [2022-11-02 20:56:33,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:56:33,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2261 transitions. [2022-11-02 20:56:33,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:56:33,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:33,894 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, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:33,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:34,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:34,107 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting alt_bzeroErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:56:34,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:34,108 INFO L85 PathProgramCache]: Analyzing trace with hash 816968073, now seen corresponding path program 1 times [2022-11-02 20:56:34,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:34,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305010474] [2022-11-02 20:56:34,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:34,108 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:34,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:34,109 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:34,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:56:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:34,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:56:34,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:34,472 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 20:56:34,500 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 20:56:34,540 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 20:56:34,580 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 20:56:34,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:34,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:34,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305010474] [2022-11-02 20:56:34,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305010474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:34,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:34,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:56:34,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926513956] [2022-11-02 20:56:34,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:34,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:56:34,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:34,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:56:34,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:56:34,582 INFO L87 Difference]: Start difference. First operand 1644 states and 2261 transitions. Second operand has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:56:39,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:39,517 INFO L93 Difference]: Finished difference Result 1659 states and 2277 transitions. [2022-11-02 20:56:39,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:56:39,519 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 80 [2022-11-02 20:56:39,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:39,523 INFO L225 Difference]: With dead ends: 1659 [2022-11-02 20:56:39,523 INFO L226 Difference]: Without dead ends: 1659 [2022-11-02 20:56:39,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:56:39,524 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 23 mSDsluCounter, 3121 mSDsCounter, 0 mSdLazyCounter, 2696 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4082 SdHoareTripleChecker+Invalid, 2698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:39,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 4082 Invalid, 2698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2696 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-02 20:56:39,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2022-11-02 20:56:39,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1658. [2022-11-02 20:56:39,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1658 states, 1209 states have (on average 1.836228287841191) internal successors, (2220), 1621 states have internal predecessors, (2220), 28 states have call successors, (28), 15 states have call predecessors, (28), 14 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2022-11-02 20:56:39,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2277 transitions. [2022-11-02 20:56:39,552 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2277 transitions. Word has length 80 [2022-11-02 20:56:39,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:39,553 INFO L495 AbstractCegarLoop]: Abstraction has 1658 states and 2277 transitions. [2022-11-02 20:56:39,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:56:39,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2277 transitions. [2022-11-02 20:56:39,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-02 20:56:39,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:39,554 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:39,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-11-02 20:56:39,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:39,767 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting alt_bzeroErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:56:39,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:39,768 INFO L85 PathProgramCache]: Analyzing trace with hash -443793445, now seen corresponding path program 1 times [2022-11-02 20:56:39,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:39,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932888669] [2022-11-02 20:56:39,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:39,768 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:39,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:39,771 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:39,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:56:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:40,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 20:56:40,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:40,207 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 20:56:40,257 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 20:56:40,267 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 20:56:40,347 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 20:56:40,355 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 20:56:40,462 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 20:56:40,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:40,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:40,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932888669] [2022-11-02 20:56:40,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932888669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:40,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:40,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:56:40,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052432170] [2022-11-02 20:56:40,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:40,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:56:40,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:40,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:56:40,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:56:40,465 INFO L87 Difference]: Start difference. First operand 1658 states and 2277 transitions. Second operand has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:56:47,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:47,533 INFO L93 Difference]: Finished difference Result 1658 states and 2275 transitions. [2022-11-02 20:56:47,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:56:47,534 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 81 [2022-11-02 20:56:47,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:47,537 INFO L225 Difference]: With dead ends: 1658 [2022-11-02 20:56:47,537 INFO L226 Difference]: Without dead ends: 1658 [2022-11-02 20:56:47,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:56:47,538 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 19 mSDsluCounter, 3924 mSDsCounter, 0 mSdLazyCounter, 2866 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4880 SdHoareTripleChecker+Invalid, 2867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:47,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 4880 Invalid, 2867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2866 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-02 20:56:47,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2022-11-02 20:56:47,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1658. [2022-11-02 20:56:47,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1658 states, 1209 states have (on average 1.8345740281224152) internal successors, (2218), 1621 states have internal predecessors, (2218), 28 states have call successors, (28), 15 states have call predecessors, (28), 14 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2022-11-02 20:56:47,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2275 transitions. [2022-11-02 20:56:47,565 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2275 transitions. Word has length 81 [2022-11-02 20:56:47,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:47,565 INFO L495 AbstractCegarLoop]: Abstraction has 1658 states and 2275 transitions. [2022-11-02 20:56:47,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:56:47,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2275 transitions. [2022-11-02 20:56:47,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-02 20:56:47,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:47,567 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:47,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:47,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:47,784 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:56:47,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:47,785 INFO L85 PathProgramCache]: Analyzing trace with hash 540063607, now seen corresponding path program 1 times [2022-11-02 20:56:47,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:47,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240774888] [2022-11-02 20:56:47,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:47,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:47,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:47,787 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:47,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:56:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:48,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:56:48,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:48,258 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 20:56:48,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:48,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:48,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240774888] [2022-11-02 20:56:48,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240774888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:48,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:48,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:56:48,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205808857] [2022-11-02 20:56:48,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:48,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:56:48,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:48,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:56:48,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:56:48,261 INFO L87 Difference]: Start difference. First operand 1658 states and 2275 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:56:48,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:48,342 INFO L93 Difference]: Finished difference Result 1674 states and 2293 transitions. [2022-11-02 20:56:48,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:56:48,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 88 [2022-11-02 20:56:48,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:48,346 INFO L225 Difference]: With dead ends: 1674 [2022-11-02 20:56:48,346 INFO L226 Difference]: Without dead ends: 1668 [2022-11-02 20:56:48,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:56:48,348 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 13 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:48,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2884 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:48,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2022-11-02 20:56:48,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1668. [2022-11-02 20:56:48,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1217 states have (on average 1.8307313064913722) internal successors, (2228), 1631 states have internal predecessors, (2228), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2022-11-02 20:56:48,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2287 transitions. [2022-11-02 20:56:48,377 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2287 transitions. Word has length 88 [2022-11-02 20:56:48,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:48,377 INFO L495 AbstractCegarLoop]: Abstraction has 1668 states and 2287 transitions. [2022-11-02 20:56:48,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:56:48,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2287 transitions. [2022-11-02 20:56:48,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-02 20:56:48,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:48,379 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:48,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:48,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:48,595 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:56:48,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:48,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1380796229, now seen corresponding path program 1 times [2022-11-02 20:56:48,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:48,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79833092] [2022-11-02 20:56:48,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:48,596 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:48,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:48,597 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:48,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 20:56:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:49,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:56:49,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:49,116 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 20:56:49,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:49,336 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 20:56:49,338 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:49,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79833092] [2022-11-02 20:56:49,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79833092] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:49,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:56:49,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-02 20:56:49,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045944940] [2022-11-02 20:56:49,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:49,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:56:49,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:49,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:56:49,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:56:49,341 INFO L87 Difference]: Start difference. First operand 1668 states and 2287 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 20:56:49,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:49,662 INFO L93 Difference]: Finished difference Result 1694 states and 2317 transitions. [2022-11-02 20:56:49,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:56:49,663 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 89 [2022-11-02 20:56:49,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:49,667 INFO L225 Difference]: With dead ends: 1694 [2022-11-02 20:56:49,667 INFO L226 Difference]: Without dead ends: 1682 [2022-11-02 20:56:49,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:56:49,668 INFO L413 NwaCegarLoop]: 967 mSDtfsCounter, 50 mSDsluCounter, 3847 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 4814 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:49,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 4814 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:56:49,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2022-11-02 20:56:49,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1676. [2022-11-02 20:56:49,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 1225 states have (on average 1.826938775510204) internal successors, (2238), 1639 states have internal predecessors, (2238), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2022-11-02 20:56:49,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2297 transitions. [2022-11-02 20:56:49,694 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2297 transitions. Word has length 89 [2022-11-02 20:56:49,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:49,695 INFO L495 AbstractCegarLoop]: Abstraction has 1676 states and 2297 transitions. [2022-11-02 20:56:49,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 20:56:49,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2297 transitions. [2022-11-02 20:56:49,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:56:49,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:49,697 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:49,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:49,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:49,914 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:56:49,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:49,914 INFO L85 PathProgramCache]: Analyzing trace with hash 180173559, now seen corresponding path program 2 times [2022-11-02 20:56:49,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:49,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180512690] [2022-11-02 20:56:49,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:56:49,915 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:49,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:49,917 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:49,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 20:56:50,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:56:50,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:56:50,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:56:50,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:50,884 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 20:56:50,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:51,272 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 20:56:51,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:51,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180512690] [2022-11-02 20:56:51,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180512690] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:51,272 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:56:51,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 20:56:51,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209745881] [2022-11-02 20:56:51,273 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:51,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:56:51,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:51,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:56:51,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:56:51,274 INFO L87 Difference]: Start difference. First operand 1676 states and 2297 transitions. Second operand has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 20:56:52,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:52,252 INFO L93 Difference]: Finished difference Result 1730 states and 2365 transitions. [2022-11-02 20:56:52,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 20:56:52,253 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 92 [2022-11-02 20:56:52,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:52,256 INFO L225 Difference]: With dead ends: 1730 [2022-11-02 20:56:52,256 INFO L226 Difference]: Without dead ends: 1718 [2022-11-02 20:56:52,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=343, Invalid=649, Unknown=0, NotChecked=0, Total=992 [2022-11-02 20:56:52,257 INFO L413 NwaCegarLoop]: 973 mSDtfsCounter, 63 mSDsluCounter, 7722 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 8695 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:52,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 8695 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:56:52,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2022-11-02 20:56:52,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 1694. [2022-11-02 20:56:52,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1694 states, 1243 states have (on average 1.819790828640386) internal successors, (2262), 1657 states have internal predecessors, (2262), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2022-11-02 20:56:52,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 2321 transitions. [2022-11-02 20:56:52,291 INFO L78 Accepts]: Start accepts. Automaton has 1694 states and 2321 transitions. Word has length 92 [2022-11-02 20:56:52,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:52,291 INFO L495 AbstractCegarLoop]: Abstraction has 1694 states and 2321 transitions. [2022-11-02 20:56:52,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 20:56:52,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1694 states and 2321 transitions. [2022-11-02 20:56:52,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:56:52,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:52,293 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:52,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:52,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:56:52,518 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:56:52,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:52,519 INFO L85 PathProgramCache]: Analyzing trace with hash -231196617, now seen corresponding path program 3 times [2022-11-02 20:56:52,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:56:52,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738896396] [2022-11-02 20:56:52,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:56:52,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:56:52,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:56:52,521 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:56:52,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 20:56:53,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-02 20:56:53,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:56:53,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:56:53,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:54,040 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 20:56:54,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:55,185 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 20:56:55,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:56:55,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738896396] [2022-11-02 20:56:55,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738896396] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:55,185 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:56:55,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2022-11-02 20:56:55,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305791043] [2022-11-02 20:56:55,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:55,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-02 20:56:55,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:56:55,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-02 20:56:55,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=534, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:56:55,191 INFO L87 Difference]: Start difference. First operand 1694 states and 2321 transitions. Second operand has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 20:57:00,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:00,392 INFO L93 Difference]: Finished difference Result 1802 states and 2469 transitions. [2022-11-02 20:57:00,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-02 20:57:00,393 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 98 [2022-11-02 20:57:00,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:00,397 INFO L225 Difference]: With dead ends: 1802 [2022-11-02 20:57:00,397 INFO L226 Difference]: Without dead ends: 1784 [2022-11-02 20:57:00,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=924, Invalid=1832, Unknown=0, NotChecked=0, Total=2756 [2022-11-02 20:57:00,399 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 206 mSDsluCounter, 12709 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 13694 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:00,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 13694 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-02 20:57:00,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2022-11-02 20:57:00,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1730. [2022-11-02 20:57:00,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1279 states have (on average 1.8045347928068804) internal successors, (2308), 1693 states have internal predecessors, (2308), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2022-11-02 20:57:00,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2367 transitions. [2022-11-02 20:57:00,427 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2367 transitions. Word has length 98 [2022-11-02 20:57:00,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:00,428 INFO L495 AbstractCegarLoop]: Abstraction has 1730 states and 2367 transitions. [2022-11-02 20:57:00,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 20:57:00,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2367 transitions. [2022-11-02 20:57:00,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-02 20:57:00,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:00,429 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:00,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:00,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:57:00,645 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:57:00,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:00,646 INFO L85 PathProgramCache]: Analyzing trace with hash 922313399, now seen corresponding path program 4 times [2022-11-02 20:57:00,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:57:00,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219329936] [2022-11-02 20:57:00,647 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:57:00,647 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:57:00,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:57:00,649 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:57:00,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 20:57:01,207 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:57:01,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:57:01,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 20:57:01,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:02,158 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 20:57:02,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:57:04,930 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 20:57:04,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:57:04,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219329936] [2022-11-02 20:57:04,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219329936] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:57:04,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:57:04,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2022-11-02 20:57:04,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945810000] [2022-11-02 20:57:04,932 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:57:04,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-02 20:57:04,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:57:04,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-02 20:57:04,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=1927, Unknown=0, NotChecked=0, Total=2652 [2022-11-02 20:57:04,934 INFO L87 Difference]: Start difference. First operand 1730 states and 2367 transitions. Second operand has 52 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 20:57:19,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:19,604 INFO L93 Difference]: Finished difference Result 1936 states and 2637 transitions. [2022-11-02 20:57:19,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-02 20:57:19,605 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 110 [2022-11-02 20:57:19,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:19,610 INFO L225 Difference]: With dead ends: 1936 [2022-11-02 20:57:19,610 INFO L226 Difference]: Without dead ends: 1924 [2022-11-02 20:57:19,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1902 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=4121, Invalid=9921, Unknown=0, NotChecked=0, Total=14042 [2022-11-02 20:57:19,614 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 501 mSDsluCounter, 24033 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 25040 SdHoareTripleChecker+Invalid, 2967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 2482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:19,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 25040 Invalid, 2967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 2482 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-02 20:57:19,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2022-11-02 20:57:19,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1798. [2022-11-02 20:57:19,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1347 states have (on average 1.78173719376392) internal successors, (2400), 1761 states have internal predecessors, (2400), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2022-11-02 20:57:19,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2459 transitions. [2022-11-02 20:57:19,661 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2459 transitions. Word has length 110 [2022-11-02 20:57:19,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:19,661 INFO L495 AbstractCegarLoop]: Abstraction has 1798 states and 2459 transitions. [2022-11-02 20:57:19,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 20:57:19,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2459 transitions. [2022-11-02 20:57:19,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-02 20:57:19,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:19,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:19,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:19,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:57:19,883 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:57:19,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:19,884 INFO L85 PathProgramCache]: Analyzing trace with hash 897981943, now seen corresponding path program 5 times [2022-11-02 20:57:19,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:57:19,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433154106] [2022-11-02 20:57:19,885 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:57:19,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:57:19,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:57:19,887 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:57:19,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 20:57:21,645 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-11-02 20:57:21,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:57:21,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-02 20:57:21,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:21,705 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 20:57:21,941 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 20:57:21,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-02 20:57:21,977 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 20:57:22,113 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 24 treesize of output 12 [2022-11-02 20:57:24,935 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:57:24,936 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 36 treesize of output 37 [2022-11-02 20:57:24,991 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 33 treesize of output 15 [2022-11-02 20:57:25,046 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-02 20:57:25,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:57:25,570 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:57:25,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433154106] [2022-11-02 20:57:25,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433154106] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:25,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1826223287] [2022-11-02 20:57:25,570 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:57:25,570 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 20:57:25,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 20:57:25,572 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 20:57:25,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-02 20:58:40,452 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-11-02 20:58:40,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:58:40,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-02 20:58:40,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:40,715 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 20:58:40,895 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 20:58:40,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-02 20:58:40,918 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 20:58:41,014 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 24 treesize of output 12 [2022-11-02 20:58:43,744 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:58:43,745 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 36 treesize of output 37 [2022-11-02 20:58:43,807 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 33 treesize of output 15 [2022-11-02 20:58:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-02 20:58:43,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:44,235 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3142 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3142) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (_ bv0 1))) is different from false [2022-11-02 20:58:44,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1826223287] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:44,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:58:44,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2022-11-02 20:58:44,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342643487] [2022-11-02 20:58:44,238 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:58:44,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:58:44,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:58:44,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:58:44,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=215, Unknown=18, NotChecked=30, Total=306 [2022-11-02 20:58:44,240 INFO L87 Difference]: Start difference. First operand 1798 states and 2459 transitions. Second operand has 14 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:58:56,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:56,322 INFO L93 Difference]: Finished difference Result 3156 states and 4275 transitions. [2022-11-02 20:58:56,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:58:56,322 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 132 [2022-11-02 20:58:56,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:56,327 INFO L225 Difference]: With dead ends: 3156 [2022-11-02 20:58:56,327 INFO L226 Difference]: Without dead ends: 3156 [2022-11-02 20:58:56,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 166 SyntacticMatches, 89 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=97, Invalid=480, Unknown=27, NotChecked=46, Total=650 [2022-11-02 20:58:56,328 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 1612 mSDsluCounter, 7144 mSDsCounter, 0 mSdLazyCounter, 5569 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 8006 SdHoareTripleChecker+Invalid, 8435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 5569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2836 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:56,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 8006 Invalid, 8435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 5569 Invalid, 0 Unknown, 2836 Unchecked, 11.6s Time] [2022-11-02 20:58:56,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2022-11-02 20:58:56,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 1795. [2022-11-02 20:58:56,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1347 states have (on average 1.77728285077951) internal successors, (2394), 1758 states have internal predecessors, (2394), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2022-11-02 20:58:56,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 2453 transitions. [2022-11-02 20:58:56,361 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 2453 transitions. Word has length 132 [2022-11-02 20:58:56,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:56,362 INFO L495 AbstractCegarLoop]: Abstraction has 1795 states and 2453 transitions. [2022-11-02 20:58:56,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:58:56,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 2453 transitions. [2022-11-02 20:58:56,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-02 20:58:56,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:56,364 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:58:56,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:56,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:56,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt [2022-11-02 20:58:56,780 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-02 20:58:56,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:56,781 INFO L85 PathProgramCache]: Analyzing trace with hash 897981944, now seen corresponding path program 1 times [2022-11-02 20:58:56,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:58:56,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002133036] [2022-11-02 20:58:56,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:56,782 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:58:56,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:58:56,783 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:58:56,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5de8ae7d-bca7-48d6-8f57-41b2d3444d76/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 20:58:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:57,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 120 conjunts are in the unsatisfiable core [2022-11-02 20:58:57,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:57,796 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 20:58:58,136 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 20:58:58,187 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:58:58,187 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 20:58:58,234 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 20:58:58,247 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 20:58:58,392 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 18 treesize of output 10 [2022-11-02 20:58:58,397 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 7 treesize of output 3 [2022-11-02 20:59:00,907 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3621 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_3621))) (exists ((v_ArrVal_3620 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_3620) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_31 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_31)))) is different from true [2022-11-02 20:59:00,962 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:59:00,962 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 20:59:00,970 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 20:59:01,043 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 25 treesize of output 13 [2022-11-02 20:59:01,053 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 15 treesize of output 7 [2022-11-02 20:59:01,100 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-02 20:59:01,100 INFO L328 TraceCheckSpWp]: Computing backward predicates...