./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b 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_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro --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 f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc --- 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-8393723 [2022-11-18 19:57:54,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:57:54,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:57:54,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:57:54,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:57:54,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:57:54,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:57:54,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:57:54,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:57:54,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:57:54,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:57:54,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:57:54,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:57:54,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:57:54,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:57:54,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:57:54,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:57:54,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:57:54,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:57:54,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:57:54,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:57:54,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:57:54,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:57:54,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:57:54,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:57:54,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:57:54,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:57:54,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:57:54,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:57:54,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:57:54,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:57:54,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:57:54,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:57:54,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:57:54,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:57:54,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:57:54,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:57:54,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:57:54,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:57:54,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:57:54,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:57:54,884 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 19:57:54,920 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:57:54,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:57:54,921 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:57:54,921 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:57:54,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:57:54,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:57:54,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:57:54,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:57:54,923 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:57:54,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:57:54,924 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:57:54,925 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:57:54,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:57:54,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:57:54,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:57:54,925 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 19:57:54,926 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 19:57:54,926 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 19:57:54,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:57:54,926 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:57:54,926 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:57:54,926 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:57:54,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:57:54,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:57:54,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:57:54,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:57:54,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:57:54,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:57:54,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:57:54,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:57:54,929 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_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc [2022-11-18 19:57:55,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:57:55,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:57:55,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:57:55,257 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:57:55,259 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:57:55,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2022-11-18 19:57:55,349 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/data/1925422dd/fd12bed318ac4c8ea17bf585fdd0cdd6/FLAG7e7348ecb [2022-11-18 19:57:55,786 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:57:55,786 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2022-11-18 19:57:55,796 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/data/1925422dd/fd12bed318ac4c8ea17bf585fdd0cdd6/FLAG7e7348ecb [2022-11-18 19:57:56,169 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/data/1925422dd/fd12bed318ac4c8ea17bf585fdd0cdd6 [2022-11-18 19:57:56,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:57:56,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:57:56,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:57:56,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:57:56,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:57:56,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:57:56" (1/1) ... [2022-11-18 19:57:56,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b932f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:56, skipping insertion in model container [2022-11-18 19:57:56,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:57:56" (1/1) ... [2022-11-18 19:57:56,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:57:56,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:57:56,491 WARN L234 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_8511a9d3-1987-4b8a-a56c-145a6003c1ea/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2022-11-18 19:57:56,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:57:56,535 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) [2022-11-18 19:57:56,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6d84d575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:56, skipping insertion in model container [2022-11-18 19:57:56,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:57:56,537 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-18 19:57:56,539 INFO L158 Benchmark]: Toolchain (without parser) took 365.34ms. Allocated memory is still 125.8MB. Free memory was 88.0MB in the beginning and 100.2MB in the end (delta: -12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 19:57:56,541 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:57:56,543 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.56ms. Allocated memory is still 125.8MB. Free memory was 87.8MB in the beginning and 100.2MB in the end (delta: -12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 19:57:56,544 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 362.56ms. Allocated memory is still 125.8MB. Free memory was 87.8MB in the beginning and 100.2MB in the end (delta: -12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 160]: 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_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro --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 f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc --- 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-8393723 [2022-11-18 19:57:58,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:57:58,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:57:58,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:57:58,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:57:58,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:57:58,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:57:58,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:57:58,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:57:58,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:57:58,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:57:58,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:57:58,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:57:58,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:57:58,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:57:58,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:57:58,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:57:58,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:57:58,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:57:58,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:57:58,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:57:58,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:57:58,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:57:58,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:57:58,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:57:58,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:57:58,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:57:58,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:57:58,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:57:58,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:57:58,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:57:58,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:57:58,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:57:58,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:57:58,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:57:58,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:57:58,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:57:58,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:57:58,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:57:58,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:57:58,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:57:58,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-18 19:57:58,847 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:57:58,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:57:58,848 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:57:58,849 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:57:58,850 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:57:58,850 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:57:58,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:57:58,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:57:58,851 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:57:58,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:57:58,853 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:57:58,853 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:57:58,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:57:58,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:57:58,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:57:58,854 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 19:57:58,854 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 19:57:58,854 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 19:57:58,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:57:58,855 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:57:58,855 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 19:57:58,855 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 19:57:58,855 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:57:58,855 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:57:58,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:57:58,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:57:58,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:57:58,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:57:58,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:57:58,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:57:58,857 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 19:57:58,857 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 19:57:58,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 19:57:58,858 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_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc [2022-11-18 19:57:59,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:57:59,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:57:59,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:57:59,291 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:57:59,295 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:57:59,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2022-11-18 19:57:59,376 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/data/6d97e09fd/95fd8be8a37746c48445978f13bec58b/FLAG849be16d5 [2022-11-18 19:57:59,866 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:57:59,867 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2022-11-18 19:57:59,875 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/data/6d97e09fd/95fd8be8a37746c48445978f13bec58b/FLAG849be16d5 [2022-11-18 19:58:00,235 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/data/6d97e09fd/95fd8be8a37746c48445978f13bec58b [2022-11-18 19:58:00,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:58:00,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:58:00,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:58:00,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:58:00,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:58:00,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:58:00" (1/1) ... [2022-11-18 19:58:00,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c7a3f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:00, skipping insertion in model container [2022-11-18 19:58:00,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:58:00" (1/1) ... [2022-11-18 19:58:00,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:58:00,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:58:00,474 WARN L234 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_8511a9d3-1987-4b8a-a56c-145a6003c1ea/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2022-11-18 19:58:00,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:58:00,540 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-18 19:58:00,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:58:00,564 WARN L234 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_8511a9d3-1987-4b8a-a56c-145a6003c1ea/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2022-11-18 19:58:00,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:58:00,574 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:58:00,601 WARN L234 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_8511a9d3-1987-4b8a-a56c-145a6003c1ea/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2022-11-18 19:58:00,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:58:00,634 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:58:00,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:00 WrapperNode [2022-11-18 19:58:00,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:58:00,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:58:00,639 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:58:00,639 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:58:00,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:00" (1/1) ... [2022-11-18 19:58:00,671 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:00" (1/1) ... [2022-11-18 19:58:00,724 INFO L138 Inliner]: procedures = 29, calls = 83, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 336 [2022-11-18 19:58:00,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:58:00,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:58:00,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:58:00,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:58:00,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:00" (1/1) ... [2022-11-18 19:58:00,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:00" (1/1) ... [2022-11-18 19:58:00,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:00" (1/1) ... [2022-11-18 19:58:00,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:00" (1/1) ... [2022-11-18 19:58:00,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:00" (1/1) ... [2022-11-18 19:58:00,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:00" (1/1) ... [2022-11-18 19:58:00,782 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:00" (1/1) ... [2022-11-18 19:58:00,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:00" (1/1) ... [2022-11-18 19:58:00,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:58:00,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:58:00,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:58:00,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:58:00,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:00" (1/1) ... [2022-11-18 19:58:00,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:58:00,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:00,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:58:00,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:58:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:58:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 19:58:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:58:00,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-18 19:58:00,892 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:58:00,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:58:00,892 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:58:00,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:58:00,893 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 19:58:00,893 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 19:58:00,893 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-18 19:58:00,893 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-18 19:58:00,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 19:58:00,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 19:58:00,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:58:00,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:58:00,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:58:00,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:58:00,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-18 19:58:00,896 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:58:01,086 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:58:01,089 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:58:02,098 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:58:02,493 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:58:02,494 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-18 19:58:02,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:58:02 BoogieIcfgContainer [2022-11-18 19:58:02,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:58:02,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:58:02,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:58:02,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:58:02,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:58:00" (1/3) ... [2022-11-18 19:58:02,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28370d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:58:02, skipping insertion in model container [2022-11-18 19:58:02,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:00" (2/3) ... [2022-11-18 19:58:02,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28370d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:58:02, skipping insertion in model container [2022-11-18 19:58:02,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:58:02" (3/3) ... [2022-11-18 19:58:02,519 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2022-11-18 19:58:02,547 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:58:02,547 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2022-11-18 19:58:02,547 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:58:02,711 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 19:58:02,766 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-18 19:58:02,789 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 288 places, 297 transitions, 626 flow [2022-11-18 19:58:02,794 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 288 places, 297 transitions, 626 flow [2022-11-18 19:58:02,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 288 places, 297 transitions, 626 flow [2022-11-18 19:58:02,979 INFO L130 PetriNetUnfolder]: 22/293 cut-off events. [2022-11-18 19:58:02,979 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 19:58:02,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 293 events. 22/293 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 269 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 241. Up to 2 conditions per place. [2022-11-18 19:58:02,996 INFO L119 LiptonReduction]: Number of co-enabled transitions 3860 [2022-11-18 19:58:44,354 WARN L233 SmtUtils]: Spent 7.14s on a formula simplification. DAG size of input: 139 DAG size of output: 138 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-18 19:58:54,052 WARN L233 SmtUtils]: Spent 8.18s on a formula simplification. DAG size of input: 148 DAG size of output: 145 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-18 19:58:58,029 INFO L134 LiptonReduction]: Checked pairs total: 6738 [2022-11-18 19:58:58,030 INFO L136 LiptonReduction]: Total number of compositions: 309 [2022-11-18 19:58:58,038 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 79 transitions, 190 flow [2022-11-18 19:58:58,693 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 12344 states, 10950 states have (on average 5.080821917808219) internal successors, (55635), 12343 states have internal predecessors, (55635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:58,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:58:58,722 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;@1cb2847d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:58:58,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2022-11-18 19:58:58,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 12344 states, 10950 states have (on average 5.080821917808219) internal successors, (55635), 12343 states have internal predecessors, (55635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:58,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 19:58:58,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:58,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 19:58:58,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-18 19:58:58,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:58,770 INFO L85 PathProgramCache]: Analyzing trace with hash 46611, now seen corresponding path program 1 times [2022-11-18 19:58:58,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:58:58,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307914028] [2022-11-18 19:58:58,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:58,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:58,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:58:58,791 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:58:58,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-18 19:58:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:58,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:58:58,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:59,207 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2022-11-18 19:58:59,208 INFO L350 Elim1Store]: Elim1 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 4 case distinctions, treesize of input 18 treesize of output 70 [2022-11-18 19:58:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:59,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:58:59,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:58:59,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307914028] [2022-11-18 19:58:59,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307914028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:59,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:59,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:58:59,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700000764] [2022-11-18 19:58:59,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:59,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:58:59,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:58:59,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:58:59,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:58:59,314 INFO L87 Difference]: Start difference. First operand has 12344 states, 10950 states have (on average 5.080821917808219) internal successors, (55635), 12343 states have internal predecessors, (55635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:00,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:00,136 INFO L93 Difference]: Finished difference Result 9644 states and 43391 transitions. [2022-11-18 19:59:00,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:59:00,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-11-18 19:59:00,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:00,501 INFO L225 Difference]: With dead ends: 9644 [2022-11-18 19:59:00,502 INFO L226 Difference]: Without dead ends: 9644 [2022-11-18 19:59:00,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:59:00,506 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 65 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:00,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 6 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:59:00,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9644 states. [2022-11-18 19:59:01,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9644 to 9644. [2022-11-18 19:59:01,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9644 states, 8640 states have (on average 5.022106481481481) internal successors, (43391), 9643 states have internal predecessors, (43391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:01,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9644 states to 9644 states and 43391 transitions. [2022-11-18 19:59:01,658 INFO L78 Accepts]: Start accepts. Automaton has 9644 states and 43391 transitions. Word has length 2 [2022-11-18 19:59:01,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:01,659 INFO L495 AbstractCegarLoop]: Abstraction has 9644 states and 43391 transitions. [2022-11-18 19:59:01,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:01,659 INFO L276 IsEmpty]: Start isEmpty. Operand 9644 states and 43391 transitions. [2022-11-18 19:59:01,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 19:59:01,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:01,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 19:59:01,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:01,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:59:01,887 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-18 19:59:01,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:01,888 INFO L85 PathProgramCache]: Analyzing trace with hash 46612, now seen corresponding path program 1 times [2022-11-18 19:59:01,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:59:01,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729364809] [2022-11-18 19:59:01,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:01,889 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:59:01,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:59:01,904 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:59:01,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-18 19:59:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:02,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:59:02,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:02,337 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-18 19:59:02,337 INFO L350 Elim1Store]: Elim1 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-18 19:59:02,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:02,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:59:02,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:59:02,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729364809] [2022-11-18 19:59:02,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729364809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:02,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:02,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:59:02,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504422893] [2022-11-18 19:59:02,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:02,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:59:02,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:59:02,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:59:02,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:59:02,398 INFO L87 Difference]: Start difference. First operand 9644 states and 43391 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:03,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:03,435 INFO L93 Difference]: Finished difference Result 19284 states and 86778 transitions. [2022-11-18 19:59:03,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:59:03,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-11-18 19:59:03,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:03,763 INFO L225 Difference]: With dead ends: 19284 [2022-11-18 19:59:03,763 INFO L226 Difference]: Without dead ends: 19284 [2022-11-18 19:59:03,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:59:03,765 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 59 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:03,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 12 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:59:03,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19284 states. [2022-11-18 19:59:04,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19284 to 9647. [2022-11-18 19:59:04,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9647 states, 8643 states have (on average 5.0212889043156315) internal successors, (43399), 9646 states have internal predecessors, (43399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:04,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9647 states to 9647 states and 43399 transitions. [2022-11-18 19:59:04,584 INFO L78 Accepts]: Start accepts. Automaton has 9647 states and 43399 transitions. Word has length 2 [2022-11-18 19:59:04,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:04,584 INFO L495 AbstractCegarLoop]: Abstraction has 9647 states and 43399 transitions. [2022-11-18 19:59:04,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:04,584 INFO L276 IsEmpty]: Start isEmpty. Operand 9647 states and 43399 transitions. [2022-11-18 19:59:04,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 19:59:04,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:04,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 19:59:04,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:04,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:59:04,786 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-18 19:59:04,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:04,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1449734, now seen corresponding path program 1 times [2022-11-18 19:59:04,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:59:04,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058418164] [2022-11-18 19:59:04,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:04,787 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:59:04,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:59:04,794 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:59:04,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-18 19:59:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:04,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:59:04,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:05,205 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-18 19:59:05,205 INFO L350 Elim1Store]: Elim1 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-18 19:59:05,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:05,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:05,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:05,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:59:05,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058418164] [2022-11-18 19:59:05,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1058418164] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:05,553 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:59:05,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-18 19:59:05,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856308809] [2022-11-18 19:59:05,553 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:05,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:59:05,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:59:05,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:59:05,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:59:05,554 INFO L87 Difference]: Start difference. First operand 9647 states and 43399 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:08,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:08,995 INFO L93 Difference]: Finished difference Result 28930 states and 130181 transitions. [2022-11-18 19:59:08,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:59:08,996 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 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 [2022-11-18 19:59:08,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:09,492 INFO L225 Difference]: With dead ends: 28930 [2022-11-18 19:59:09,493 INFO L226 Difference]: Without dead ends: 28930 [2022-11-18 19:59:09,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:59:09,494 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 239 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:09,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 24 Invalid, 294 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [36 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-18 19:59:09,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28930 states. [2022-11-18 19:59:10,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28930 to 9656. [2022-11-18 19:59:10,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9656 states, 8652 states have (on average 5.018839574664818) internal successors, (43423), 9655 states have internal predecessors, (43423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:10,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9656 states to 9656 states and 43423 transitions. [2022-11-18 19:59:10,351 INFO L78 Accepts]: Start accepts. Automaton has 9656 states and 43423 transitions. Word has length 3 [2022-11-18 19:59:10,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:10,352 INFO L495 AbstractCegarLoop]: Abstraction has 9656 states and 43423 transitions. [2022-11-18 19:59:10,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:10,352 INFO L276 IsEmpty]: Start isEmpty. Operand 9656 states and 43423 transitions. [2022-11-18 19:59:10,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-18 19:59:10,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:10,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-18 19:59:10,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:10,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:59:10,564 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-18 19:59:10,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:10,565 INFO L85 PathProgramCache]: Analyzing trace with hash 44997686, now seen corresponding path program 1 times [2022-11-18 19:59:10,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:59:10,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073878219] [2022-11-18 19:59:10,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:10,566 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:59:10,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:59:10,567 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:59:10,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-18 19:59:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:10,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 19:59:10,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:10,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:10,979 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-18 19:59:10,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-18 19:59:12,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:12,058 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-18 19:59:12,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 52 [2022-11-18 19:59:13,354 INFO L321 Elim1Store]: treesize reduction 52, result has 66.0 percent of original size [2022-11-18 19:59:13,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 182 [2022-11-18 20:01:27,033 WARN L233 SmtUtils]: Spent 1.45m on a formula simplification. DAG size of input: 358 DAG size of output: 55 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:01:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:27,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:01:27,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:01:27,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1073878219] [2022-11-18 20:01:27,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1073878219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:27,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:27,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:01:27,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212018433] [2022-11-18 20:01:27,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:27,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:01:27,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:01:27,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:01:27,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=9, Unknown=1, NotChecked=0, Total=20 [2022-11-18 20:01:27,038 INFO L87 Difference]: Start difference. First operand 9656 states and 43423 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:27,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:27,407 INFO L93 Difference]: Finished difference Result 9658 states and 43428 transitions. [2022-11-18 20:01:27,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:01:27,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-11-18 20:01:27,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:27,489 INFO L225 Difference]: With dead ends: 9658 [2022-11-18 20:01:27,489 INFO L226 Difference]: Without dead ends: 9658 [2022-11-18 20:01:27,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 92.0s TimeCoverageRelationStatistics Valid=10, Invalid=9, Unknown=1, NotChecked=0, Total=20 [2022-11-18 20:01:27,491 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:27,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 116 Unchecked, 0.3s Time] [2022-11-18 20:01:27,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9658 states. [2022-11-18 20:01:27,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9658 to 9658. [2022-11-18 20:01:27,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9658 states, 8654 states have (on average 5.018257453200832) internal successors, (43428), 9657 states have internal predecessors, (43428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:27,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9658 states to 9658 states and 43428 transitions. [2022-11-18 20:01:27,840 INFO L78 Accepts]: Start accepts. Automaton has 9658 states and 43428 transitions. Word has length 4 [2022-11-18 20:01:27,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:27,840 INFO L495 AbstractCegarLoop]: Abstraction has 9658 states and 43428 transitions. [2022-11-18 20:01:27,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:27,841 INFO L276 IsEmpty]: Start isEmpty. Operand 9658 states and 43428 transitions. [2022-11-18 20:01:27,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-18 20:01:27,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:27,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-18 20:01:27,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:28,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:01:28,058 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-18 20:01:28,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:28,059 INFO L85 PathProgramCache]: Analyzing trace with hash 44997687, now seen corresponding path program 1 times [2022-11-18 20:01:28,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:01:28,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526744913] [2022-11-18 20:01:28,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:28,060 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:01:28,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:01:28,061 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:01:28,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-18 20:01:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:28,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:01:28,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:28,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:28,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:28,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:28,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:28,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:28,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:28,534 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-18 20:01:28,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 41 [2022-11-18 20:01:28,625 INFO L321 Elim1Store]: treesize reduction 26, result has 16.1 percent of original size [2022-11-18 20:01:28,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 317 treesize of output 310 [2022-11-18 20:01:28,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:28,753 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:01:28,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:28,803 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:01:28,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:28,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:01:28,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:01:28,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526744913] [2022-11-18 20:01:28,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526744913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:28,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:28,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:01:28,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373187629] [2022-11-18 20:01:28,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:28,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:01:28,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:01:28,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:01:28,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:01:28,857 INFO L87 Difference]: Start difference. First operand 9658 states and 43428 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:29,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:29,350 INFO L93 Difference]: Finished difference Result 7893 states and 34602 transitions. [2022-11-18 20:01:29,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:01:29,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-11-18 20:01:29,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:29,399 INFO L225 Difference]: With dead ends: 7893 [2022-11-18 20:01:29,399 INFO L226 Difference]: Without dead ends: 7893 [2022-11-18 20:01:29,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:01:29,400 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 63 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:29,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 6 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 2 Unchecked, 0.4s Time] [2022-11-18 20:01:29,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7893 states. [2022-11-18 20:01:29,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7893 to 7893. [2022-11-18 20:01:29,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7893 states, 7115 states have (on average 4.863246661981729) internal successors, (34602), 7892 states have internal predecessors, (34602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:29,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7893 states to 7893 states and 34602 transitions. [2022-11-18 20:01:29,660 INFO L78 Accepts]: Start accepts. Automaton has 7893 states and 34602 transitions. Word has length 4 [2022-11-18 20:01:29,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:29,660 INFO L495 AbstractCegarLoop]: Abstraction has 7893 states and 34602 transitions. [2022-11-18 20:01:29,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:29,660 INFO L276 IsEmpty]: Start isEmpty. Operand 7893 states and 34602 transitions. [2022-11-18 20:01:29,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 20:01:29,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:29,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 20:01:29,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:29,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:01:29,873 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-18 20:01:29,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:29,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1393397928, now seen corresponding path program 1 times [2022-11-18 20:01:29,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:01:29,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164169866] [2022-11-18 20:01:29,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:29,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:01:29,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:01:29,875 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:01:29,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-18 20:01:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:30,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:01:30,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:30,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:30,262 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-18 20:01:30,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-18 20:01:30,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:30,784 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 20:01:30,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 36 [2022-11-18 20:01:31,193 INFO L321 Elim1Store]: treesize reduction 28, result has 50.9 percent of original size [2022-11-18 20:01:31,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 80 [2022-11-18 20:01:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:01:33,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:01:33,791 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:01:33,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164169866] [2022-11-18 20:01:33,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164169866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:33,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:33,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:01:33,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670830119] [2022-11-18 20:01:33,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:33,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:01:33,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:01:33,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:01:33,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=9, Unknown=1, NotChecked=0, Total=20 [2022-11-18 20:01:33,794 INFO L87 Difference]: Start difference. First operand 7893 states and 34602 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:34,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:34,152 INFO L93 Difference]: Finished difference Result 7894 states and 34604 transitions. [2022-11-18 20:01:34,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:01:34,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-18 20:01:34,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:34,191 INFO L225 Difference]: With dead ends: 7894 [2022-11-18 20:01:34,191 INFO L226 Difference]: Without dead ends: 7894 [2022-11-18 20:01:34,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=10, Invalid=9, Unknown=1, NotChecked=0, Total=20 [2022-11-18 20:01:34,193 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:34,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 113 Unchecked, 0.3s Time] [2022-11-18 20:01:34,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7894 states. [2022-11-18 20:01:34,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7894 to 7892. [2022-11-18 20:01:34,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7892 states, 7114 states have (on average 4.863649142535845) internal successors, (34600), 7891 states have internal predecessors, (34600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:34,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7892 states to 7892 states and 34600 transitions. [2022-11-18 20:01:34,623 INFO L78 Accepts]: Start accepts. Automaton has 7892 states and 34600 transitions. Word has length 5 [2022-11-18 20:01:34,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:34,623 INFO L495 AbstractCegarLoop]: Abstraction has 7892 states and 34600 transitions. [2022-11-18 20:01:34,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:34,624 INFO L276 IsEmpty]: Start isEmpty. Operand 7892 states and 34600 transitions. [2022-11-18 20:01:34,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 20:01:34,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:34,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 20:01:34,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:34,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:01:34,825 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-18 20:01:34,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:34,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1394863453, now seen corresponding path program 1 times [2022-11-18 20:01:34,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:01:34,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184565176] [2022-11-18 20:01:34,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:34,828 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:01:34,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:01:34,829 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:01:34,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-18 20:01:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:35,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 20:01:35,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:35,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:35,212 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-18 20:01:35,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-18 20:01:36,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:36,251 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-18 20:01:36,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 52 [2022-11-18 20:01:37,937 INFO L321 Elim1Store]: treesize reduction 52, result has 66.0 percent of original size [2022-11-18 20:01:37,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 186 [2022-11-18 20:05:18,961 WARN L233 SmtUtils]: Spent 2.45m on a formula simplification. DAG size of input: 541 DAG size of output: 57 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:05:18,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:05:18,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:05:18,964 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:05:18,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184565176] [2022-11-18 20:05:18,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184565176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:18,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:18,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:05:18,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337964922] [2022-11-18 20:05:18,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:18,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:05:18,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:05:18,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:05:18,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=9, Unknown=1, NotChecked=0, Total=20 [2022-11-18 20:05:18,966 INFO L87 Difference]: Start difference. First operand 7892 states and 34600 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:19,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:05:19,386 INFO L93 Difference]: Finished difference Result 7899 states and 34615 transitions. [2022-11-18 20:05:19,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:05:19,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-18 20:05:19,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:05:19,422 INFO L225 Difference]: With dead ends: 7899 [2022-11-18 20:05:19,422 INFO L226 Difference]: Without dead ends: 7899 [2022-11-18 20:05:19,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 151.5s TimeCoverageRelationStatistics Valid=10, Invalid=9, Unknown=1, NotChecked=0, Total=20 [2022-11-18 20:05:19,423 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:05:19,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 112 Unchecked, 0.4s Time] [2022-11-18 20:05:19,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7899 states. [2022-11-18 20:05:19,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7899 to 7897. [2022-11-18 20:05:19,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7897 states, 7119 states have (on average 4.861778339654446) internal successors, (34611), 7896 states have internal predecessors, (34611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:19,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7897 states to 7897 states and 34611 transitions. [2022-11-18 20:05:19,718 INFO L78 Accepts]: Start accepts. Automaton has 7897 states and 34611 transitions. Word has length 5 [2022-11-18 20:05:19,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:05:19,719 INFO L495 AbstractCegarLoop]: Abstraction has 7897 states and 34611 transitions. [2022-11-18 20:05:19,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:19,719 INFO L276 IsEmpty]: Start isEmpty. Operand 7897 states and 34611 transitions. [2022-11-18 20:05:19,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 20:05:19,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:05:19,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 20:05:19,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:05:19,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:05:19,932 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-18 20:05:19,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:19,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1394927592, now seen corresponding path program 1 times [2022-11-18 20:05:19,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:05:19,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217180012] [2022-11-18 20:05:19,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:19,933 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:05:19,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:05:19,934 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:05:19,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-18 20:05:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:20,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 20:05:20,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:05:20,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:05:20,425 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-18 20:05:20,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-18 20:05:21,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:05:21,701 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-18 20:05:21,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 52 [2022-11-18 20:05:23,591 INFO L321 Elim1Store]: treesize reduction 52, result has 66.0 percent of original size [2022-11-18 20:05:23,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 182 [2022-11-18 20:09:40,497 WARN L233 SmtUtils]: Spent 3.13m on a formula simplification. DAG size of input: 395 DAG size of output: 77 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:09:40,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:09:40,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:09:40,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:09:40,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217180012] [2022-11-18 20:09:40,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217180012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:09:40,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:09:40,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:09:40,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424439075] [2022-11-18 20:09:40,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:09:40,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:09:40,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:09:40,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:09:40,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=9, Unknown=2, NotChecked=0, Total=20 [2022-11-18 20:09:40,850 INFO L87 Difference]: Start difference. First operand 7897 states and 34611 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:41,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:09:41,302 INFO L93 Difference]: Finished difference Result 7902 states and 34622 transitions. [2022-11-18 20:09:41,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:09:41,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-18 20:09:41,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:09:41,336 INFO L225 Difference]: With dead ends: 7902 [2022-11-18 20:09:41,336 INFO L226 Difference]: Without dead ends: 7902 [2022-11-18 20:09:41,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 194.5s TimeCoverageRelationStatistics Valid=9, Invalid=9, Unknown=2, NotChecked=0, Total=20 [2022-11-18 20:09:41,337 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:09:41,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 113 Unchecked, 0.4s Time] [2022-11-18 20:09:41,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7902 states. [2022-11-18 20:09:41,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7902 to 7902. [2022-11-18 20:09:41,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7902 states, 7124 states have (on average 4.859910162829871) internal successors, (34622), 7901 states have internal predecessors, (34622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:41,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7902 states to 7902 states and 34622 transitions. [2022-11-18 20:09:41,605 INFO L78 Accepts]: Start accepts. Automaton has 7902 states and 34622 transitions. Word has length 5 [2022-11-18 20:09:41,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:09:41,605 INFO L495 AbstractCegarLoop]: Abstraction has 7902 states and 34622 transitions. [2022-11-18 20:09:41,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:41,605 INFO L276 IsEmpty]: Start isEmpty. Operand 7902 states and 34622 transitions. [2022-11-18 20:09:41,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:09:41,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:09:41,606 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-18 20:09:41,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:09:41,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:09:41,819 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-18 20:09:41,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:41,819 INFO L85 PathProgramCache]: Analyzing trace with hash 244081300, now seen corresponding path program 2 times [2022-11-18 20:09:41,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:09:41,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863043271] [2022-11-18 20:09:41,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:09:41,820 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:09:41,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:09:41,821 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:09:41,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-18 20:09:41,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:09:41,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:09:41,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:09:41,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:09:42,299 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-18 20:09:42,300 INFO L350 Elim1Store]: Elim1 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-18 20:09:42,592 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:42,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:09:43,843 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:09:43,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:09:43,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863043271] [2022-11-18 20:09:43,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1863043271] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:09:43,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:09:43,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-18 20:09:43,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330057126] [2022-11-18 20:09:43,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:09:43,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:09:43,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:09:43,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:09:43,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:09:43,845 INFO L87 Difference]: Start difference. First operand 7902 states and 34622 transitions. Second operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:09:48,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:09:50,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:09:52,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:09:54,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:09:57,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:09:59,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:10:01,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:10:09,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:10:09,529 INFO L93 Difference]: Finished difference Result 55152 states and 242015 transitions. [2022-11-18 20:10:09,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:10:09,531 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 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 6 [2022-11-18 20:10:09,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:10:09,832 INFO L225 Difference]: With dead ends: 55152 [2022-11-18 20:10:09,832 INFO L226 Difference]: Without dead ends: 55152 [2022-11-18 20:10:09,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:10:09,833 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1539 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 139 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:10:09,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1539 Valid, 174 Invalid, 1793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1648 Invalid, 6 Unknown, 0 Unchecked, 23.0s Time] [2022-11-18 20:10:09,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55152 states. [2022-11-18 20:10:10,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55152 to 7920. [2022-11-18 20:10:10,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7920 states, 7142 states have (on average 4.853122374684962) internal successors, (34661), 7919 states have internal predecessors, (34661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:10,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7920 states to 7920 states and 34661 transitions. [2022-11-18 20:10:10,515 INFO L78 Accepts]: Start accepts. Automaton has 7920 states and 34661 transitions. Word has length 6 [2022-11-18 20:10:10,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:10:10,515 INFO L495 AbstractCegarLoop]: Abstraction has 7920 states and 34661 transitions. [2022-11-18 20:10:10,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:10,515 INFO L276 IsEmpty]: Start isEmpty. Operand 7920 states and 34661 transitions. [2022-11-18 20:10:10,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:10:10,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:10:10,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 20:10:10,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-18 20:10:10,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:10:10,717 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-18 20:10:10,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:10,717 INFO L85 PathProgramCache]: Analyzing trace with hash 245597995, now seen corresponding path program 1 times [2022-11-18 20:10:10,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:10:10,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20244253] [2022-11-18 20:10:10,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:10,717 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:10:10,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:10:10,718 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:10:10,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-18 20:10:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:10,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 20:10:10,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:10:10,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:10:11,155 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-18 20:10:11,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-18 20:10:12,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:10:12,435 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-18 20:10:12,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 52 [2022-11-18 20:10:14,392 INFO L321 Elim1Store]: treesize reduction 52, result has 66.0 percent of original size [2022-11-18 20:10:14,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 182 [2022-11-18 20:10:34,748 WARN L233 SmtUtils]: Spent 7.56s on a formula simplification. DAG size of input: 153 DAG size of output: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:10:34,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:10:34,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:10:34,754 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:10:34,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20244253] [2022-11-18 20:10:34,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20244253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:10:34,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:10:34,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:10:34,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607673323] [2022-11-18 20:10:34,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:10:34,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:10:34,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:10:34,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:10:34,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=9, Unknown=1, NotChecked=0, Total=20 [2022-11-18 20:10:34,755 INFO L87 Difference]: Start difference. First operand 7920 states and 34661 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:35,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:10:35,131 INFO L93 Difference]: Finished difference Result 7920 states and 34660 transitions. [2022-11-18 20:10:35,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:10:35,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-11-18 20:10:35,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:10:35,160 INFO L225 Difference]: With dead ends: 7920 [2022-11-18 20:10:35,160 INFO L226 Difference]: Without dead ends: 7920 [2022-11-18 20:10:35,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=10, Invalid=9, Unknown=1, NotChecked=0, Total=20 [2022-11-18 20:10:35,161 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 163 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:10:35,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 163 Unchecked, 0.3s Time] [2022-11-18 20:10:35,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7920 states. [2022-11-18 20:10:35,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7920 to 7912. [2022-11-18 20:10:35,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7912 states, 7134 states have (on average 4.856041491449397) internal successors, (34643), 7911 states have internal predecessors, (34643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:35,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7912 states to 7912 states and 34643 transitions. [2022-11-18 20:10:35,354 INFO L78 Accepts]: Start accepts. Automaton has 7912 states and 34643 transitions. Word has length 6 [2022-11-18 20:10:35,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:10:35,354 INFO L495 AbstractCegarLoop]: Abstraction has 7912 states and 34643 transitions. [2022-11-18 20:10:35,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:10:35,355 INFO L276 IsEmpty]: Start isEmpty. Operand 7912 states and 34643 transitions. [2022-11-18 20:10:35,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:10:35,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:10:35,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 20:10:35,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:10:35,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:10:35,556 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-18 20:10:35,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:35,557 INFO L85 PathProgramCache]: Analyzing trace with hash 245662134, now seen corresponding path program 1 times [2022-11-18 20:10:35,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:10:35,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030054284] [2022-11-18 20:10:35,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:35,557 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:10:35,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:10:35,558 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:10:35,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-18 20:10:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:35,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 20:10:35,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:10:35,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:10:36,009 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-18 20:10:36,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-18 20:10:37,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:10:37,400 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-18 20:10:37,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 52 [2022-11-18 20:10:39,394 INFO L321 Elim1Store]: treesize reduction 52, result has 66.0 percent of original size [2022-11-18 20:10:39,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 182 [2022-11-18 20:11:20,483 WARN L233 SmtUtils]: Spent 22.42s on a formula simplification. DAG size of input: 197 DAG size of output: 63 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:11:20,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:11:20,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:11:20,775 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:11:20,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030054284] [2022-11-18 20:11:20,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030054284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:11:20,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:11:20,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:11:20,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547314688] [2022-11-18 20:11:20,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:11:20,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:11:20,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:11:20,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:11:20,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=9, Unknown=1, NotChecked=0, Total=20 [2022-11-18 20:11:20,777 INFO L87 Difference]: Start difference. First operand 7912 states and 34643 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:21,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:21,182 INFO L93 Difference]: Finished difference Result 7920 states and 34660 transitions. [2022-11-18 20:11:21,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:11:21,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-11-18 20:11:21,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:21,215 INFO L225 Difference]: With dead ends: 7920 [2022-11-18 20:11:21,215 INFO L226 Difference]: Without dead ends: 7920 [2022-11-18 20:11:21,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=10, Invalid=9, Unknown=1, NotChecked=0, Total=20 [2022-11-18 20:11:21,216 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:21,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 112 Unchecked, 0.4s Time] [2022-11-18 20:11:21,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7920 states. [2022-11-18 20:11:21,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7920 to 7911. [2022-11-18 20:11:21,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7911 states, 7133 states have (on average 4.856441889807935) internal successors, (34641), 7910 states have internal predecessors, (34641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:21,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7911 states to 7911 states and 34641 transitions. [2022-11-18 20:11:21,419 INFO L78 Accepts]: Start accepts. Automaton has 7911 states and 34641 transitions. Word has length 6 [2022-11-18 20:11:21,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:21,419 INFO L495 AbstractCegarLoop]: Abstraction has 7911 states and 34641 transitions. [2022-11-18 20:11:21,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:21,419 INFO L276 IsEmpty]: Start isEmpty. Operand 7911 states and 34641 transitions. [2022-11-18 20:11:21,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:11:21,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:21,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 20:11:21,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:11:21,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:11:21,621 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-18 20:11:21,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:21,621 INFO L85 PathProgramCache]: Analyzing trace with hash 291093409, now seen corresponding path program 1 times [2022-11-18 20:11:21,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:11:21,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74580126] [2022-11-18 20:11:21,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:21,622 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:11:21,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:11:21,622 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:11:21,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-18 20:11:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:21,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 20:11:21,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:21,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:22,119 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-18 20:11:22,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-18 20:11:22,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:22,767 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 20:11:22,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 36 [2022-11-18 20:11:23,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:23,348 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-18 20:11:23,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 60 [2022-11-18 20:11:25,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:11:25,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:11:25,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:11:25,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74580126] [2022-11-18 20:11:25,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74580126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:11:25,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:11:25,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:11:25,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338737444] [2022-11-18 20:11:25,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:11:25,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:11:25,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:11:25,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:11:25,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:11:25,059 INFO L87 Difference]: Start difference. First operand 7911 states and 34641 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:25,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:25,491 INFO L93 Difference]: Finished difference Result 7935 states and 34692 transitions. [2022-11-18 20:11:25,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:11:25,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-11-18 20:11:25,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:25,530 INFO L225 Difference]: With dead ends: 7935 [2022-11-18 20:11:25,530 INFO L226 Difference]: Without dead ends: 7935 [2022-11-18 20:11:25,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:11:25,531 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:25,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 112 Unchecked, 0.4s Time] [2022-11-18 20:11:25,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7935 states. [2022-11-18 20:11:25,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7935 to 7919. [2022-11-18 20:11:25,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7919 states, 7141 states have (on average 4.853381879288615) internal successors, (34658), 7918 states have internal predecessors, (34658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:25,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7919 states to 7919 states and 34658 transitions. [2022-11-18 20:11:25,770 INFO L78 Accepts]: Start accepts. Automaton has 7919 states and 34658 transitions. Word has length 6 [2022-11-18 20:11:25,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:25,770 INFO L495 AbstractCegarLoop]: Abstraction has 7919 states and 34658 transitions. [2022-11-18 20:11:25,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:25,771 INFO L276 IsEmpty]: Start isEmpty. Operand 7919 states and 34658 transitions. [2022-11-18 20:11:25,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:11:25,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:25,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 20:11:25,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:11:25,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:11:25,975 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-18 20:11:25,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:25,975 INFO L85 PathProgramCache]: Analyzing trace with hash 293138422, now seen corresponding path program 1 times [2022-11-18 20:11:25,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:11:25,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775610481] [2022-11-18 20:11:25,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:25,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:11:25,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:11:25,980 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:11:25,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-18 20:11:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:26,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:11:26,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:26,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:26,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:26,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:26,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:26,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:26,460 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2022-11-18 20:11:26,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 44 [2022-11-18 20:11:26,554 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-18 20:11:26,555 INFO L350 Elim1Store]: Elim1 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 154 treesize of output 153 [2022-11-18 20:11:26,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:26,691 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:11:26,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:26,740 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:11:26,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:11:26,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:11:26,850 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:11:26,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775610481] [2022-11-18 20:11:26,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [775610481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:11:26,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:11:26,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:11:26,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871556278] [2022-11-18 20:11:26,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:11:26,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:11:26,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:11:26,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:11:26,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:11:26,852 INFO L87 Difference]: Start difference. First operand 7919 states and 34658 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:27,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:27,430 INFO L93 Difference]: Finished difference Result 7660 states and 33636 transitions. [2022-11-18 20:11:27,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:11:27,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-11-18 20:11:27,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:27,465 INFO L225 Difference]: With dead ends: 7660 [2022-11-18 20:11:27,466 INFO L226 Difference]: Without dead ends: 7660 [2022-11-18 20:11:27,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:11:27,466 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 120 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:27,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 6 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 2 Unchecked, 0.5s Time] [2022-11-18 20:11:27,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7660 states. [2022-11-18 20:11:27,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7660 to 7660. [2022-11-18 20:11:27,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7660 states, 6932 states have (on average 4.852279284477784) internal successors, (33636), 7659 states have internal predecessors, (33636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:27,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7660 states to 7660 states and 33636 transitions. [2022-11-18 20:11:27,732 INFO L78 Accepts]: Start accepts. Automaton has 7660 states and 33636 transitions. Word has length 6 [2022-11-18 20:11:27,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:27,732 INFO L495 AbstractCegarLoop]: Abstraction has 7660 states and 33636 transitions. [2022-11-18 20:11:27,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:11:27,732 INFO L276 IsEmpty]: Start isEmpty. Operand 7660 states and 33636 transitions. [2022-11-18 20:11:27,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:11:27,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:27,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 20:11:27,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:11:27,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:11:27,934 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-18 20:11:27,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:27,937 INFO L85 PathProgramCache]: Analyzing trace with hash 293138424, now seen corresponding path program 1 times [2022-11-18 20:11:27,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:11:27,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112501555] [2022-11-18 20:11:27,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:27,938 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:11:27,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:11:27,939 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:11:27,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8511a9d3-1987-4b8a-a56c-145a6003c1ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-18 20:11:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:28,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 20:11:28,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:28,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:28,378 INFO L321 Elim1Store]: treesize reduction 161, result has 20.3 percent of original size [2022-11-18 20:11:28,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 74 [2022-11-18 20:11:29,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:29,601 INFO L321 Elim1Store]: treesize reduction 34, result has 40.4 percent of original size [2022-11-18 20:11:29,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 52 [2022-11-18 20:11:31,380 INFO L321 Elim1Store]: treesize reduction 52, result has 66.0 percent of original size [2022-11-18 20:11:31,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 81 treesize of output 174