./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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_48e83917-8b34-41a5-a908-1aa48c892627/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 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 --- 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 20:24:54,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:24:54,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:24:54,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:24:54,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:24:54,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:24:54,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:24:54,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:24:54,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:24:54,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:24:54,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:24:54,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:24:54,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:24:54,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:24:54,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:24:54,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:24:54,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:24:54,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:24:54,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:24:54,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:24:54,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:24:54,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:24:54,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:24:54,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:24:54,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:24:54,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:24:54,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:24:54,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:24:54,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:24:54,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:24:54,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:24:54,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:24:54,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:24:54,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:24:54,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:24:54,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:24:54,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:24:54,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:24:54,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:24:54,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:24:54,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:24:54,374 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 20:24:54,395 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:24:54,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:24:54,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:24:54,397 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:24:54,397 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:24:54,398 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:24:54,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:24:54,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:24:54,399 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:24:54,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:24:54,400 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:24:54,400 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:24:54,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:24:54,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:24:54,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:24:54,401 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 20:24:54,401 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 20:24:54,401 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 20:24:54,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:24:54,402 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:24:54,402 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:24:54,402 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:24:54,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:24:54,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:24:54,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:24:54,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:24:54,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:24:54,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:24:54,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:24:54,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:24:54,405 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_48e83917-8b34-41a5-a908-1aa48c892627/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 [2022-11-18 20:24:54,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:24:54,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:24:54,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:24:54,740 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:24:54,746 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:24:54,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2022-11-18 20:24:54,837 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/data/662d259b6/a609f6925a2c46c496c686f0d7ee7a98/FLAGf806912fe [2022-11-18 20:24:55,427 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:24:55,428 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2022-11-18 20:24:55,436 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/data/662d259b6/a609f6925a2c46c496c686f0d7ee7a98/FLAGf806912fe [2022-11-18 20:24:55,776 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/data/662d259b6/a609f6925a2c46c496c686f0d7ee7a98 [2022-11-18 20:24:55,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:24:55,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:24:55,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:24:55,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:24:55,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:24:55,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:24:55" (1/1) ... [2022-11-18 20:24:55,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba5ab2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:55, skipping insertion in model container [2022-11-18 20:24:55,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:24:55" (1/1) ... [2022-11-18 20:24:55,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:24:55,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:24:56,070 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_48e83917-8b34-41a5-a908-1aa48c892627/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2815,2828] [2022-11-18 20:24:56,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:24:56,093 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 20:24:56,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4f86d6f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:56, skipping insertion in model container [2022-11-18 20:24:56,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:24:56,094 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-18 20:24:56,096 INFO L158 Benchmark]: Toolchain (without parser) took 315.14ms. Allocated memory is still 107.0MB. Free memory was 72.8MB in the beginning and 84.6MB in the end (delta: -11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 20:24:56,097 INFO L158 Benchmark]: CDTParser took 0.69ms. Allocated memory is still 107.0MB. Free memory was 78.4MB in the beginning and 78.4MB in the end (delta: 30.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:24:56,098 INFO L158 Benchmark]: CACSL2BoogieTranslator took 312.02ms. Allocated memory is still 107.0MB. Free memory was 72.6MB in the beginning and 84.6MB in the end (delta: -12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 20:24:56,100 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69ms. Allocated memory is still 107.0MB. Free memory was 78.4MB in the beginning and 78.4MB in the end (delta: 30.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 312.02ms. Allocated memory is still 107.0MB. Free memory was 72.6MB in the beginning and 84.6MB in the end (delta: -12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 123]: 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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_48e83917-8b34-41a5-a908-1aa48c892627/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 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 --- 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 20:24:58,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:24:58,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:24:58,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:24:58,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:24:58,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:24:58,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:24:58,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:24:58,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:24:58,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:24:58,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:24:58,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:24:58,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:24:58,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:24:58,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:24:58,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:24:58,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:24:58,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:24:58,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:24:58,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:24:58,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:24:58,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:24:58,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:24:58,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:24:58,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:24:58,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:24:58,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:24:58,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:24:58,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:24:58,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:24:58,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:24:58,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:24:58,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:24:58,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:24:58,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:24:58,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:24:58,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:24:58,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:24:58,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:24:58,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:24:58,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:24:58,790 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-18 20:24:58,837 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:24:58,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:24:58,839 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:24:58,840 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:24:58,841 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:24:58,841 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:24:58,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:24:58,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:24:58,843 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:24:58,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:24:58,845 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:24:58,846 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:24:58,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:24:58,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:24:58,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:24:58,847 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 20:24:58,847 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 20:24:58,848 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 20:24:58,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:24:58,848 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:24:58,849 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 20:24:58,849 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 20:24:58,849 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:24:58,849 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:24:58,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:24:58,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:24:58,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:24:58,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:24:58,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:24:58,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:24:58,852 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 20:24:58,852 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 20:24:58,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 20:24:58,853 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_48e83917-8b34-41a5-a908-1aa48c892627/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 [2022-11-18 20:24:59,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:24:59,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:24:59,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:24:59,379 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:24:59,380 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:24:59,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2022-11-18 20:24:59,455 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/data/ae231e6c8/d9b42950274548498404850b3ff78162/FLAGd037054df [2022-11-18 20:25:00,107 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:25:00,108 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2022-11-18 20:25:00,121 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/data/ae231e6c8/d9b42950274548498404850b3ff78162/FLAGd037054df [2022-11-18 20:25:00,411 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/data/ae231e6c8/d9b42950274548498404850b3ff78162 [2022-11-18 20:25:00,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:25:00,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:25:00,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:25:00,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:25:00,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:25:00,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:25:00" (1/1) ... [2022-11-18 20:25:00,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57937b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:00, skipping insertion in model container [2022-11-18 20:25:00,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:25:00" (1/1) ... [2022-11-18 20:25:00,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:25:00,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:25:00,765 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_48e83917-8b34-41a5-a908-1aa48c892627/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2815,2828] [2022-11-18 20:25:00,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:25:00,811 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-18 20:25:00,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:25:00,878 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_48e83917-8b34-41a5-a908-1aa48c892627/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2815,2828] [2022-11-18 20:25:00,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:25:00,902 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:25:00,932 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_48e83917-8b34-41a5-a908-1aa48c892627/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c[2815,2828] [2022-11-18 20:25:00,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:25:00,959 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:25:00,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:00 WrapperNode [2022-11-18 20:25:00,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:25:00,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:25:00,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:25:00,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:25:00,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:00" (1/1) ... [2022-11-18 20:25:00,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:00" (1/1) ... [2022-11-18 20:25:01,023 INFO L138 Inliner]: procedures = 28, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 225 [2022-11-18 20:25:01,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:25:01,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:25:01,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:25:01,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:25:01,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:00" (1/1) ... [2022-11-18 20:25:01,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:00" (1/1) ... [2022-11-18 20:25:01,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:00" (1/1) ... [2022-11-18 20:25:01,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:00" (1/1) ... [2022-11-18 20:25:01,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:00" (1/1) ... [2022-11-18 20:25:01,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:00" (1/1) ... [2022-11-18 20:25:01,069 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:00" (1/1) ... [2022-11-18 20:25:01,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:00" (1/1) ... [2022-11-18 20:25:01,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:25:01,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:25:01,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:25:01,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:25:01,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:00" (1/1) ... [2022-11-18 20:25:01,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:25:01,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:25:01,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:25:01,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:25:01,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:25:01,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 20:25:01,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:25:01,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-18 20:25:01,160 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:25:01,160 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:25:01,160 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:25:01,160 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:25:01,160 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:25:01,160 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:25:01,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:25:01,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:25:01,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:25:01,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:25:01,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:25:01,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:25:01,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-18 20:25:01,163 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 20:25:01,312 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:25:01,315 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:25:02,473 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:25:02,660 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:25:02,660 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 20:25:02,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:25:02 BoogieIcfgContainer [2022-11-18 20:25:02,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:25:02,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:25:02,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:25:02,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:25:02,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:25:00" (1/3) ... [2022-11-18 20:25:02,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@217f4b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:25:02, skipping insertion in model container [2022-11-18 20:25:02,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:00" (2/3) ... [2022-11-18 20:25:02,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@217f4b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:25:02, skipping insertion in model container [2022-11-18 20:25:02,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:25:02" (3/3) ... [2022-11-18 20:25:02,687 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2022-11-18 20:25:02,709 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:25:02,709 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2022-11-18 20:25:02,709 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:25:02,910 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:25:02,971 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-18 20:25:02,997 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 340 places, 357 transitions, 738 flow [2022-11-18 20:25:03,002 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 340 places, 357 transitions, 738 flow [2022-11-18 20:25:03,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 357 transitions, 738 flow [2022-11-18 20:25:03,228 INFO L130 PetriNetUnfolder]: 27/354 cut-off events. [2022-11-18 20:25:03,228 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:25:03,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 354 events. 27/354 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 411 event pairs, 0 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 274. Up to 3 conditions per place. [2022-11-18 20:25:03,247 INFO L119 LiptonReduction]: Number of co-enabled transitions 5194 [2022-11-18 20:26:32,977 INFO L134 LiptonReduction]: Checked pairs total: 9159 [2022-11-18 20:26:32,978 INFO L136 LiptonReduction]: Total number of compositions: 414 [2022-11-18 20:26:32,988 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 84 transitions, 192 flow [2022-11-18 20:26:33,266 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4936 states, 3750 states have (on average 5.039733333333333) internal successors, (18899), 4935 states have internal predecessors, (18899), 0 states have call successors, (0), 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 20:26:33,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:26:33,303 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;@1adb53b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:26:33,303 INFO L358 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2022-11-18 20:26:33,324 INFO L276 IsEmpty]: Start isEmpty. Operand has 4936 states, 3750 states have (on average 5.039733333333333) internal successors, (18899), 4935 states have internal predecessors, (18899), 0 states have call successors, (0), 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 20:26:33,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 20:26:33,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:26:33,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 20:26:33,331 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-11-18 20:26:33,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:33,337 INFO L85 PathProgramCache]: Analyzing trace with hash 45816, now seen corresponding path program 1 times [2022-11-18 20:26:33,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:26:33,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077034585] [2022-11-18 20:26:33,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:33,354 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 20:26:33,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:26:33,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:33,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:33,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:26:33,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:26:33,675 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 20:26:33,677 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-18 20:26:33,712 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 20:26:33,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:26:33,713 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:26:33,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077034585] [2022-11-18 20:26:33,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077034585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:26:33,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:26:33,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:26:33,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516023076] [2022-11-18 20:26:33,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:26:33,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:26:33,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:26:33,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:26:33,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:26:33,764 INFO L87 Difference]: Start difference. First operand has 4936 states, 3750 states have (on average 5.039733333333333) internal successors, (18899), 4935 states have internal predecessors, (18899), 0 states have call successors, (0), 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 20:26:34,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:26:34,439 INFO L93 Difference]: Finished difference Result 2816 states and 10887 transitions. [2022-11-18 20:26:34,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:26:34,444 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 20:26:34,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:26:34,491 INFO L225 Difference]: With dead ends: 2816 [2022-11-18 20:26:34,492 INFO L226 Difference]: Without dead ends: 2816 [2022-11-18 20:26:34,493 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 20:26:34,496 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 63 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:26:34,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 4 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:26:34,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2022-11-18 20:26:34,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 2816. [2022-11-18 20:26:34,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2816 states, 2364 states have (on average 4.605329949238579) internal successors, (10887), 2815 states have internal predecessors, (10887), 0 states have call successors, (0), 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 20:26:34,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2816 states to 2816 states and 10887 transitions. [2022-11-18 20:26:34,818 INFO L78 Accepts]: Start accepts. Automaton has 2816 states and 10887 transitions. Word has length 2 [2022-11-18 20:26:34,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:26:34,818 INFO L495 AbstractCegarLoop]: Abstraction has 2816 states and 10887 transitions. [2022-11-18 20:26:34,821 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 20:26:34,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2816 states and 10887 transitions. [2022-11-18 20:26:34,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 20:26:34,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:26:34,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 20:26:34,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:35,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:35,036 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-11-18 20:26:35,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:35,036 INFO L85 PathProgramCache]: Analyzing trace with hash 45817, now seen corresponding path program 1 times [2022-11-18 20:26:35,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:26:35,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050173552] [2022-11-18 20:26:35,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:35,037 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 20:26:35,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:26:35,039 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:35,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:35,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:26:35,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:26:35,364 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 20:26:35,365 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 20:26:35,432 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 20:26:35,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:26:35,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:26:35,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050173552] [2022-11-18 20:26:35,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050173552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:26:35,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:26:35,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:26:35,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2303775] [2022-11-18 20:26:35,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:26:35,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:26:35,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:26:35,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:26:35,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:26:35,437 INFO L87 Difference]: Start difference. First operand 2816 states and 10887 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 20:26:36,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:26:36,012 INFO L93 Difference]: Finished difference Result 2817 states and 10889 transitions. [2022-11-18 20:26:36,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:26:36,014 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 20:26:36,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:26:36,041 INFO L225 Difference]: With dead ends: 2817 [2022-11-18 20:26:36,042 INFO L226 Difference]: Without dead ends: 2817 [2022-11-18 20:26:36,043 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 20:26:36,050 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:26:36,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 61 Unchecked, 0.5s Time] [2022-11-18 20:26:36,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2022-11-18 20:26:36,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2817. [2022-11-18 20:26:36,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2817 states, 2365 states have (on average 4.604228329809725) internal successors, (10889), 2816 states have internal predecessors, (10889), 0 states have call successors, (0), 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 20:26:36,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2817 states to 2817 states and 10889 transitions. [2022-11-18 20:26:36,206 INFO L78 Accepts]: Start accepts. Automaton has 2817 states and 10889 transitions. Word has length 2 [2022-11-18 20:26:36,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:26:36,206 INFO L495 AbstractCegarLoop]: Abstraction has 2817 states and 10889 transitions. [2022-11-18 20:26:36,206 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 20:26:36,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2817 states and 10889 transitions. [2022-11-18 20:26:36,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 20:26:36,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:26:36,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 20:26:36,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:36,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:36,420 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-11-18 20:26:36,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:36,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1431265, now seen corresponding path program 1 times [2022-11-18 20:26:36,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:26:36,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981416782] [2022-11-18 20:26:36,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:36,422 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 20:26:36,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:26:36,423 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:36,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:36,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:26:36,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:26:36,671 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 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:26:36,714 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 20:26:36,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:26:36,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:26:36,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981416782] [2022-11-18 20:26:36,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981416782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:26:36,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:26:36,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:26:36,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374832306] [2022-11-18 20:26:36,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:26:36,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:26:36,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:26:36,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:26:36,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:26:36,719 INFO L87 Difference]: Start difference. First operand 2817 states and 10889 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:26:37,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:26:37,556 INFO L93 Difference]: Finished difference Result 2818 states and 10891 transitions. [2022-11-18 20:26:37,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:26:37,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-18 20:26:37,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:26:37,589 INFO L225 Difference]: With dead ends: 2818 [2022-11-18 20:26:37,589 INFO L226 Difference]: Without dead ends: 2818 [2022-11-18 20:26:37,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:26:37,596 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:26:37,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 61 Unchecked, 0.7s Time] [2022-11-18 20:26:37,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2022-11-18 20:26:37,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 2818. [2022-11-18 20:26:37,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2818 states, 2366 states have (on average 4.60312764158918) internal successors, (10891), 2817 states have internal predecessors, (10891), 0 states have call successors, (0), 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 20:26:37,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2818 states to 2818 states and 10891 transitions. [2022-11-18 20:26:37,758 INFO L78 Accepts]: Start accepts. Automaton has 2818 states and 10891 transitions. Word has length 3 [2022-11-18 20:26:37,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:26:37,759 INFO L495 AbstractCegarLoop]: Abstraction has 2818 states and 10891 transitions. [2022-11-18 20:26:37,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:26:37,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2818 states and 10891 transitions. [2022-11-18 20:26:37,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 20:26:37,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:26:37,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 20:26:37,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:37,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:37,973 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-11-18 20:26:37,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:37,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1427952, now seen corresponding path program 1 times [2022-11-18 20:26:37,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:26:37,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217442880] [2022-11-18 20:26:37,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:37,975 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 20:26:37,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:26:37,977 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:37,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:38,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:26:38,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:26:38,311 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 20:26:38,311 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 20:26:38,410 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 20:26:38,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:26:38,679 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 20:26:38,679 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:26:38,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217442880] [2022-11-18 20:26:38,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217442880] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:26:38,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:26:38,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-18 20:26:38,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709514159] [2022-11-18 20:26:38,680 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:26:38,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:26:38,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:26:38,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:26:38,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:26:38,681 INFO L87 Difference]: Start difference. First operand 2818 states and 10891 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 20:26:40,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:26:42,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:26:43,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:26:43,486 INFO L93 Difference]: Finished difference Result 2824 states and 10914 transitions. [2022-11-18 20:26:43,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:26:43,493 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 20:26:43,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:26:43,531 INFO L225 Difference]: With dead ends: 2824 [2022-11-18 20:26:43,531 INFO L226 Difference]: Without dead ends: 2824 [2022-11-18 20:26:43,532 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 20:26:43,534 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 121 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:26:43,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 12 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-18 20:26:43,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2824 states. [2022-11-18 20:26:43,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2824 to 2824. [2022-11-18 20:26:43,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2824 states, 2372 states have (on average 4.601180438448567) internal successors, (10914), 2823 states have internal predecessors, (10914), 0 states have call successors, (0), 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 20:26:43,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2824 states to 2824 states and 10914 transitions. [2022-11-18 20:26:43,778 INFO L78 Accepts]: Start accepts. Automaton has 2824 states and 10914 transitions. Word has length 3 [2022-11-18 20:26:43,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:26:43,778 INFO L495 AbstractCegarLoop]: Abstraction has 2824 states and 10914 transitions. [2022-11-18 20:26:43,778 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 20:26:43,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2824 states and 10914 transitions. [2022-11-18 20:26:43,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 20:26:43,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:26:43,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 20:26:43,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:43,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:43,993 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-11-18 20:26:43,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:43,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1372612283, now seen corresponding path program 1 times [2022-11-18 20:26:43,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:26:43,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073094905] [2022-11-18 20:26:43,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:43,997 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 20:26:43,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:26:43,999 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:44,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:44,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:26:44,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:26:44,381 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 20:26:44,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:26:44,518 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 20:26:44,518 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:26:44,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073094905] [2022-11-18 20:26:44,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073094905] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:26:44,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:26:44,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-18 20:26:44,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770262006] [2022-11-18 20:26:44,519 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:26:44,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:26:44,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:26:44,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:26:44,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:26:44,520 INFO L87 Difference]: Start difference. First operand 2824 states and 10914 transitions. Second operand has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:26:47,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:26:47,210 INFO L93 Difference]: Finished difference Result 8454 states and 32694 transitions. [2022-11-18 20:26:47,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:26:47,212 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 20:26:47,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:26:47,339 INFO L225 Difference]: With dead ends: 8454 [2022-11-18 20:26:47,339 INFO L226 Difference]: Without dead ends: 8454 [2022-11-18 20:26:47,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:26:47,341 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 180 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:26:47,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 25 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-18 20:26:47,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8454 states. [2022-11-18 20:26:47,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8454 to 2829. [2022-11-18 20:26:47,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2829 states, 2377 states have (on average 4.59570887673538) internal successors, (10924), 2828 states have internal predecessors, (10924), 0 states have call successors, (0), 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 20:26:47,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2829 states to 2829 states and 10924 transitions. [2022-11-18 20:26:47,681 INFO L78 Accepts]: Start accepts. Automaton has 2829 states and 10924 transitions. Word has length 5 [2022-11-18 20:26:47,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:26:47,681 INFO L495 AbstractCegarLoop]: Abstraction has 2829 states and 10924 transitions. [2022-11-18 20:26:47,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:26:47,682 INFO L276 IsEmpty]: Start isEmpty. Operand 2829 states and 10924 transitions. [2022-11-18 20:26:47,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:26:47,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:26:47,683 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-18 20:26:47,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:47,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:47,895 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-11-18 20:26:47,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:47,896 INFO L85 PathProgramCache]: Analyzing trace with hash -398777814, now seen corresponding path program 1 times [2022-11-18 20:26:47,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:26:47,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743422194] [2022-11-18 20:26:47,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:47,897 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 20:26:47,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:26:47,899 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:47,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:48,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 20:26:48,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:26:48,134 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 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:26:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:26:48,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:26:48,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:26:48,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:26:48,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743422194] [2022-11-18 20:26:48,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743422194] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:26:48,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:26:48,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-18 20:26:48,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745626502] [2022-11-18 20:26:48,911 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:26:48,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:26:48,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:26:48,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:26:48,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:26:48,912 INFO L87 Difference]: Start difference. First operand 2829 states and 10924 transitions. Second operand has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 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 20:26:52,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:26:52,076 INFO L93 Difference]: Finished difference Result 2831 states and 10926 transitions. [2022-11-18 20:26:52,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:26:52,078 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 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 20:26:52,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:26:52,099 INFO L225 Difference]: With dead ends: 2831 [2022-11-18 20:26:52,100 INFO L226 Difference]: Without dead ends: 2831 [2022-11-18 20:26:52,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:26:52,101 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:26:52,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 472 Invalid, 0 Unknown, 2 Unchecked, 2.9s Time] [2022-11-18 20:26:52,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2022-11-18 20:26:52,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 2831. [2022-11-18 20:26:52,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2831 states, 2379 states have (on average 4.592686002522068) internal successors, (10926), 2830 states have internal predecessors, (10926), 0 states have call successors, (0), 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 20:26:52,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2831 states to 2831 states and 10926 transitions. [2022-11-18 20:26:52,236 INFO L78 Accepts]: Start accepts. Automaton has 2831 states and 10926 transitions. Word has length 6 [2022-11-18 20:26:52,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:26:52,238 INFO L495 AbstractCegarLoop]: Abstraction has 2831 states and 10926 transitions. [2022-11-18 20:26:52,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 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 20:26:52,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2831 states and 10926 transitions. [2022-11-18 20:26:52,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:26:52,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:26:52,239 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-18 20:26:52,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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)] Ended with exit code 0 [2022-11-18 20:26:52,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:52,453 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-11-18 20:26:52,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:52,454 INFO L85 PathProgramCache]: Analyzing trace with hash -401983303, now seen corresponding path program 2 times [2022-11-18 20:26:52,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:26:52,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938250496] [2022-11-18 20:26:52,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:26:52,455 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 20:26:52,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:26:52,456 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:52,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:26:52,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:26:52,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:26:52,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:26:52,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:26:52,738 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 20:26:52,738 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-18 20:26:52,977 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 20:26:52,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:26:53,813 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 20:26:53,814 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:26:53,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938250496] [2022-11-18 20:26:53,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938250496] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:26:53,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:26:53,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-18 20:26:53,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530480713] [2022-11-18 20:26:53,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:26:53,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:26:53,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:26:53,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:26:53,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:26:53,817 INFO L87 Difference]: Start difference. First operand 2831 states and 10926 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 20:26:56,400 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 20:26:58,521 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 20:27:04,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:27:04,898 INFO L93 Difference]: Finished difference Result 5646 states and 21809 transitions. [2022-11-18 20:27:04,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:27:04,901 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 20:27:04,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:27:04,939 INFO L225 Difference]: With dead ends: 5646 [2022-11-18 20:27:04,940 INFO L226 Difference]: Without dead ends: 5646 [2022-11-18 20:27:04,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:27:04,941 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 278 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 71 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:27:04,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 48 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 733 Invalid, 2 Unknown, 0 Unchecked, 9.5s Time] [2022-11-18 20:27:04,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5646 states. [2022-11-18 20:27:05,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5646 to 2837. [2022-11-18 20:27:05,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2837 states, 2385 states have (on average 4.586163522012579) internal successors, (10938), 2836 states have internal predecessors, (10938), 0 states have call successors, (0), 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 20:27:05,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2837 states to 2837 states and 10938 transitions. [2022-11-18 20:27:05,119 INFO L78 Accepts]: Start accepts. Automaton has 2837 states and 10938 transitions. Word has length 6 [2022-11-18 20:27:05,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:05,120 INFO L495 AbstractCegarLoop]: Abstraction has 2837 states and 10938 transitions. [2022-11-18 20:27:05,121 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 20:27:05,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2837 states and 10938 transitions. [2022-11-18 20:27:05,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 20:27:05,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:05,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:27:05,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:27:05,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:27:05,336 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2022-11-18 20:27:05,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:05,336 INFO L85 PathProgramCache]: Analyzing trace with hash 522881215, now seen corresponding path program 1 times [2022-11-18 20:27:05,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:27:05,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412294464] [2022-11-18 20:27:05,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:05,337 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 20:27:05,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:27:05,338 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:27:05,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48e83917-8b34-41a5-a908-1aa48c892627/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 20:27:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:05,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:27:05,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:27:05,736 INFO L321 Elim1Store]: treesize reduction 103, result has 24.8 percent of original size [2022-11-18 20:27:05,737 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 6 case distinctions, treesize of input 38 treesize of output 59 [2022-11-18 20:27:06,379 INFO L321 Elim1Store]: treesize reduction 48, result has 68.6 percent of original size [2022-11-18 20:27:06,379 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 66 treesize of output 163 [2022-11-18 20:27:17,894 INFO L321 Elim1Store]: treesize reduction 60, result has 72.2 percent of original size [2022-11-18 20:27:17,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 106 treesize of output 252