./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN --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 cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d --- 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-6b4ec56 [2022-11-20 12:04:19,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:04:19,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:04:19,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:04:19,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:04:19,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:04:19,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:04:19,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:04:19,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:04:19,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:04:19,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:04:19,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:04:19,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:04:19,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:04:19,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:04:19,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:04:19,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:04:19,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:04:19,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:04:19,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:04:19,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:04:19,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:04:19,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:04:19,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:04:19,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:04:19,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:04:19,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:04:19,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:04:19,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:04:19,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:04:19,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:04:19,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:04:19,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:04:19,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:04:19,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:04:19,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:04:19,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:04:19,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:04:19,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:04:19,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:04:19,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:04:19,725 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 12:04:19,748 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:04:19,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:04:19,749 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:04:19,749 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:04:19,750 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:04:19,751 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:04:19,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:04:19,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:04:19,752 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:04:19,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:04:19,752 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:04:19,753 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:04:19,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:04:19,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:04:19,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:04:19,754 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 12:04:19,754 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 12:04:19,754 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 12:04:19,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:04:19,755 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:04:19,755 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:04:19,755 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:04:19,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:04:19,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:04:19,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:04:19,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:04:19,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:04:19,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:04:19,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:04:19,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:04:19,757 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_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d [2022-11-20 12:04:20,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:04:20,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:04:20,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:04:20,112 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:04:20,113 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:04:20,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2022-11-20 12:04:23,119 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:04:23,442 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:04:23,443 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2022-11-20 12:04:23,459 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/data/e372fa9b5/a17039a83d6a4f4ebbd3df1dfc591bd2/FLAG65f9e06e3 [2022-11-20 12:04:23,711 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/data/e372fa9b5/a17039a83d6a4f4ebbd3df1dfc591bd2 [2022-11-20 12:04:23,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:04:23,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:04:23,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:04:23,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:04:23,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:04:23,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:04:23" (1/1) ... [2022-11-20 12:04:23,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46c048ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:23, skipping insertion in model container [2022-11-20 12:04:23,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:04:23" (1/1) ... [2022-11-20 12:04:23,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:04:23,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:04:24,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:04:24,174 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) [2022-11-20 12:04:24,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@20066ff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:24, skipping insertion in model container [2022-11-20 12:04:24,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:04:24,177 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-20 12:04:24,179 INFO L158 Benchmark]: Toolchain (without parser) took 462.39ms. Allocated memory is still 186.6MB. Free memory was 153.8MB in the beginning and 141.9MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 12:04:24,179 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 134.2MB. Free memory is still 76.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:04:24,180 INFO L158 Benchmark]: CACSL2BoogieTranslator took 459.97ms. Allocated memory is still 186.6MB. Free memory was 153.3MB in the beginning and 141.9MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 12:04:24,182 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 134.2MB. Free memory is still 76.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 459.97ms. Allocated memory is still 186.6MB. Free memory was 153.3MB in the beginning and 141.9MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 556]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN --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 cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d --- 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-6b4ec56 [2022-11-20 12:04:26,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:04:26,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:04:26,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:04:26,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:04:26,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:04:26,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:04:26,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:04:26,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:04:26,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:04:26,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:04:26,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:04:26,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:04:26,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:04:26,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:04:26,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:04:26,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:04:26,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:04:26,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:04:26,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:04:26,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:04:26,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:04:26,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:04:26,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:04:26,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:04:26,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:04:26,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:04:26,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:04:26,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:04:26,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:04:26,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:04:26,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:04:26,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:04:26,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:04:26,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:04:26,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:04:26,501 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:04:26,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:04:26,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:04:26,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:04:26,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:04:26,506 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-20 12:04:26,548 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:04:26,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:04:26,549 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:04:26,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:04:26,551 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:04:26,551 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:04:26,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:04:26,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:04:26,552 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:04:26,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:04:26,553 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:04:26,553 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:04:26,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:04:26,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:04:26,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:04:26,554 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 12:04:26,555 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 12:04:26,555 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 12:04:26,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:04:26,555 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:04:26,555 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:04:26,556 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:04:26,556 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:04:26,556 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:04:26,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:04:26,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:04:26,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:04:26,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:04:26,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:04:26,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:04:26,558 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:04:26,558 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:04:26,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:04:26,558 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_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d [2022-11-20 12:04:26,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:04:26,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:04:26,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:04:26,983 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:04:26,984 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:04:26,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2022-11-20 12:04:30,126 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:04:30,462 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:04:30,462 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2022-11-20 12:04:30,473 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/data/1c93c9b5b/8af068bafcae4a4ab77a0a48580c5667/FLAGe79d88b99 [2022-11-20 12:04:30,492 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/data/1c93c9b5b/8af068bafcae4a4ab77a0a48580c5667 [2022-11-20 12:04:30,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:04:30,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:04:30,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:04:30,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:04:30,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:04:30,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:04:30" (1/1) ... [2022-11-20 12:04:30,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fc33f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:30, skipping insertion in model container [2022-11-20 12:04:30,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:04:30" (1/1) ... [2022-11-20 12:04:30,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:04:30,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:04:30,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:04:30,971 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 12:04:30,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:04:31,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:04:31,044 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:04:31,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:04:31,149 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:04:31,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:31 WrapperNode [2022-11-20 12:04:31,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:04:31,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:04:31,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:04:31,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:04:31,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:31" (1/1) ... [2022-11-20 12:04:31,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:31" (1/1) ... [2022-11-20 12:04:31,243 INFO L138 Inliner]: procedures = 129, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2022-11-20 12:04:31,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:04:31,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:04:31,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:04:31,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:04:31,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:31" (1/1) ... [2022-11-20 12:04:31,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:31" (1/1) ... [2022-11-20 12:04:31,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:31" (1/1) ... [2022-11-20 12:04:31,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:31" (1/1) ... [2022-11-20 12:04:31,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:31" (1/1) ... [2022-11-20 12:04:31,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:31" (1/1) ... [2022-11-20 12:04:31,304 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:31" (1/1) ... [2022-11-20 12:04:31,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:31" (1/1) ... [2022-11-20 12:04:31,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:04:31,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:04:31,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:04:31,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:04:31,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:31" (1/1) ... [2022-11-20 12:04:31,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:04:31,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:31,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:04:31,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:04:31,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 12:04:31,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:04:31,409 INFO L130 BoogieDeclarations]: Found specification of procedure create_data [2022-11-20 12:04:31,409 INFO L138 BoogieDeclarations]: Found implementation of procedure create_data [2022-11-20 12:04:31,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:04:31,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:04:31,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:04:31,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:04:31,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:04:31,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 12:04:31,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:04:31,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 12:04:31,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:04:31,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:04:31,587 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:04:31,589 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:04:32,477 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:04:32,491 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:04:32,491 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-20 12:04:32,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:04:32 BoogieIcfgContainer [2022-11-20 12:04:32,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:04:32,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:04:32,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:04:32,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:04:32,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:04:30" (1/3) ... [2022-11-20 12:04:32,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53966f88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:04:32, skipping insertion in model container [2022-11-20 12:04:32,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:04:31" (2/3) ... [2022-11-20 12:04:32,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53966f88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:04:32, skipping insertion in model container [2022-11-20 12:04:32,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:04:32" (3/3) ... [2022-11-20 12:04:32,507 INFO L112 eAbstractionObserver]: Analyzing ICFG complex_data_creation_test02-2.i [2022-11-20 12:04:32,526 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:04:32,527 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 92 error locations. [2022-11-20 12:04:32,583 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:04:32,591 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;@614fa15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:04:32,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 92 error locations. [2022-11-20 12:04:32,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 189 states, 93 states have (on average 2.161290322580645) internal successors, (201), 185 states have internal predecessors, (201), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:04:32,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 12:04:32,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:32,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 12:04:32,605 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:04:32,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:32,610 INFO L85 PathProgramCache]: Analyzing trace with hash 5052905, now seen corresponding path program 1 times [2022-11-20 12:04:32,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:04:32,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039562384] [2022-11-20 12:04:32,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:32,624 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 [2022-11-20 12:04:32,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:04:32,630 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:04:32,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:32,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 12:04:32,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:32,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:32,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:32,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:04:32,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039562384] [2022-11-20 12:04:32,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039562384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:32,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:32,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:04:32,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891284966] [2022-11-20 12:04:32,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:32,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:04:32,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:04:32,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:04:32,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:04:32,838 INFO L87 Difference]: Start difference. First operand has 189 states, 93 states have (on average 2.161290322580645) internal successors, (201), 185 states have internal predecessors, (201), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:32,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:32,867 INFO L93 Difference]: Finished difference Result 189 states and 200 transitions. [2022-11-20 12:04:32,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:04:32,870 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 12:04:32,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:32,878 INFO L225 Difference]: With dead ends: 189 [2022-11-20 12:04:32,879 INFO L226 Difference]: Without dead ends: 187 [2022-11-20 12:04:32,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:04:32,883 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:32,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:04:32,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-20 12:04:32,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2022-11-20 12:04:32,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 92 states have (on average 2.108695652173913) internal successors, (194), 183 states have internal predecessors, (194), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:04:32,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 198 transitions. [2022-11-20 12:04:32,965 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 198 transitions. Word has length 4 [2022-11-20 12:04:32,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:32,965 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 198 transitions. [2022-11-20 12:04:32,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:32,965 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 198 transitions. [2022-11-20 12:04:32,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 12:04:32,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:32,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 12:04:32,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:33,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:33,182 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:04:33,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:33,185 INFO L85 PathProgramCache]: Analyzing trace with hash 5050693, now seen corresponding path program 1 times [2022-11-20 12:04:33,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:04:33,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062888049] [2022-11-20 12:04:33,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:33,186 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 [2022-11-20 12:04:33,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:04:33,187 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:04:33,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:33,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:04:33,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:33,318 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 6 treesize of output 7 [2022-11-20 12:04:33,384 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:04:33,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 12:04:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:33,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:33,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:04:33,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062888049] [2022-11-20 12:04:33,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062888049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:33,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:33,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:04:33,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133244965] [2022-11-20 12:04:33,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:33,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:04:33,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:04:33,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:04:33,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:04:33,426 INFO L87 Difference]: Start difference. First operand 187 states and 198 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:34,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:34,123 INFO L93 Difference]: Finished difference Result 207 states and 219 transitions. [2022-11-20 12:04:34,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:04:34,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 12:04:34,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:34,127 INFO L225 Difference]: With dead ends: 207 [2022-11-20 12:04:34,127 INFO L226 Difference]: Without dead ends: 207 [2022-11-20 12:04:34,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:04:34,129 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 149 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:34,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 287 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 12:04:34,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-20 12:04:34,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 181. [2022-11-20 12:04:34,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 92 states have (on average 2.0434782608695654) internal successors, (188), 177 states have internal predecessors, (188), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:04:34,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 192 transitions. [2022-11-20 12:04:34,154 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 192 transitions. Word has length 4 [2022-11-20 12:04:34,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:34,155 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 192 transitions. [2022-11-20 12:04:34,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:34,155 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 192 transitions. [2022-11-20 12:04:34,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 12:04:34,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:34,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 12:04:34,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:34,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:34,357 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:04:34,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:34,357 INFO L85 PathProgramCache]: Analyzing trace with hash 5050694, now seen corresponding path program 1 times [2022-11-20 12:04:34,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:04:34,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482141520] [2022-11-20 12:04:34,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:34,358 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 [2022-11-20 12:04:34,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:04:34,360 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:04:34,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:04:34,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:34,491 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 6 treesize of output 5 [2022-11-20 12:04:34,501 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 6 treesize of output 7 [2022-11-20 12:04:34,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:04:34,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:04:34,587 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:04:34,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:04:34,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:34,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:34,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:04:34,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482141520] [2022-11-20 12:04:34,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482141520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:34,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:34,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:04:34,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614228413] [2022-11-20 12:04:34,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:34,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:04:34,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:04:34,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:04:34,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:04:34,615 INFO L87 Difference]: Start difference. First operand 181 states and 192 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:35,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:35,463 INFO L93 Difference]: Finished difference Result 197 states and 211 transitions. [2022-11-20 12:04:35,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:04:35,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 12:04:35,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:35,470 INFO L225 Difference]: With dead ends: 197 [2022-11-20 12:04:35,471 INFO L226 Difference]: Without dead ends: 197 [2022-11-20 12:04:35,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:04:35,472 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 28 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:35,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 344 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 12:04:35,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-20 12:04:35,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 186. [2022-11-20 12:04:35,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 97 states have (on average 2.0103092783505154) internal successors, (195), 182 states have internal predecessors, (195), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:04:35,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 199 transitions. [2022-11-20 12:04:35,495 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 199 transitions. Word has length 4 [2022-11-20 12:04:35,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:35,495 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 199 transitions. [2022-11-20 12:04:35,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:35,495 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 199 transitions. [2022-11-20 12:04:35,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 12:04:35,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:35,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 12:04:35,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:35,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:35,703 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:04:35,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:35,703 INFO L85 PathProgramCache]: Analyzing trace with hash 156571597, now seen corresponding path program 1 times [2022-11-20 12:04:35,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:04:35,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387610454] [2022-11-20 12:04:35,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:35,704 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 [2022-11-20 12:04:35,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:04:35,712 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:04:35,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:35,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:04:35,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:35,805 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 6 treesize of output 7 [2022-11-20 12:04:35,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:35,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:35,815 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:04:35,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387610454] [2022-11-20 12:04:35,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387610454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:35,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:35,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:04:35,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154060440] [2022-11-20 12:04:35,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:35,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:04:35,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:04:35,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:04:35,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:04:35,818 INFO L87 Difference]: Start difference. First operand 186 states and 199 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:36,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:36,178 INFO L93 Difference]: Finished difference Result 209 states and 222 transitions. [2022-11-20 12:04:36,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:04:36,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 12:04:36,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:36,179 INFO L225 Difference]: With dead ends: 209 [2022-11-20 12:04:36,179 INFO L226 Difference]: Without dead ends: 209 [2022-11-20 12:04:36,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:04:36,181 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 64 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:36,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 232 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:04:36,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-20 12:04:36,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 184. [2022-11-20 12:04:36,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 97 states have (on average 1.9793814432989691) internal successors, (192), 180 states have internal predecessors, (192), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:04:36,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 196 transitions. [2022-11-20 12:04:36,190 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 196 transitions. Word has length 5 [2022-11-20 12:04:36,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:36,190 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 196 transitions. [2022-11-20 12:04:36,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:36,190 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 196 transitions. [2022-11-20 12:04:36,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 12:04:36,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:36,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 12:04:36,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:36,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:36,403 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:04:36,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:36,404 INFO L85 PathProgramCache]: Analyzing trace with hash 156571598, now seen corresponding path program 1 times [2022-11-20 12:04:36,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:04:36,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776403151] [2022-11-20 12:04:36,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:36,405 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 [2022-11-20 12:04:36,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:04:36,406 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:04:36,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:36,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:04:36,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:36,493 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 6 treesize of output 5 [2022-11-20 12:04:36,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:36,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:36,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:04:36,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776403151] [2022-11-20 12:04:36,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776403151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:36,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:36,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:04:36,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942234367] [2022-11-20 12:04:36,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:36,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:04:36,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:04:36,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:04:36,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:04:36,513 INFO L87 Difference]: Start difference. First operand 184 states and 196 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:36,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:36,997 INFO L93 Difference]: Finished difference Result 182 states and 193 transitions. [2022-11-20 12:04:36,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:04:36,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 12:04:36,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:36,999 INFO L225 Difference]: With dead ends: 182 [2022-11-20 12:04:36,999 INFO L226 Difference]: Without dead ends: 182 [2022-11-20 12:04:36,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:04:37,000 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 11 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:37,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 273 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:04:37,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-20 12:04:37,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-11-20 12:04:37,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 97 states have (on average 1.9484536082474226) internal successors, (189), 178 states have internal predecessors, (189), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:04:37,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 193 transitions. [2022-11-20 12:04:37,009 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 193 transitions. Word has length 5 [2022-11-20 12:04:37,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:37,010 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 193 transitions. [2022-11-20 12:04:37,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:37,010 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 193 transitions. [2022-11-20 12:04:37,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 12:04:37,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:37,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:37,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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)] Ended with exit code 0 [2022-11-20 12:04:37,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:37,222 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:04:37,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:37,223 INFO L85 PathProgramCache]: Analyzing trace with hash 666573431, now seen corresponding path program 1 times [2022-11-20 12:04:37,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:04:37,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419075812] [2022-11-20 12:04:37,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:37,223 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 [2022-11-20 12:04:37,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:04:37,224 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:04:37,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:37,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:04:37,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:37,324 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 6 treesize of output 7 [2022-11-20 12:04:37,369 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:04:37,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:04:37,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:04:37,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:04:37,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:04:37,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:04:37,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:37,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:37,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:04:37,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419075812] [2022-11-20 12:04:37,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419075812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:37,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:37,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:04:37,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331999269] [2022-11-20 12:04:37,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:37,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:04:37,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:04:37,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:04:37,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:04:37,540 INFO L87 Difference]: Start difference. First operand 182 states and 193 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-11-20 12:04:38,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:38,141 INFO L93 Difference]: Finished difference Result 184 states and 196 transitions. [2022-11-20 12:04:38,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:04:38,142 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 10 [2022-11-20 12:04:38,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:38,143 INFO L225 Difference]: With dead ends: 184 [2022-11-20 12:04:38,143 INFO L226 Difference]: Without dead ends: 184 [2022-11-20 12:04:38,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:04:38,144 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 7 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:38,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 606 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:04:38,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-20 12:04:38,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2022-11-20 12:04:38,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 98 states have (on average 1.9387755102040816) internal successors, (190), 179 states have internal predecessors, (190), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:04:38,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 194 transitions. [2022-11-20 12:04:38,150 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 194 transitions. Word has length 10 [2022-11-20 12:04:38,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:38,151 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 194 transitions. [2022-11-20 12:04:38,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-11-20 12:04:38,151 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 194 transitions. [2022-11-20 12:04:38,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 12:04:38,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:38,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:38,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:38,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:38,367 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:04:38,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:38,368 INFO L85 PathProgramCache]: Analyzing trace with hash 623653565, now seen corresponding path program 1 times [2022-11-20 12:04:38,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:04:38,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004290272] [2022-11-20 12:04:38,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:38,368 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 [2022-11-20 12:04:38,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:04:38,369 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:04:38,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:38,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:04:38,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:38,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:38,489 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:04:38,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004290272] [2022-11-20 12:04:38,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004290272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:38,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:38,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:04:38,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022267537] [2022-11-20 12:04:38,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:38,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:04:38,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:04:38,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:04:38,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:04:38,493 INFO L87 Difference]: Start difference. First operand 183 states and 194 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:38,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:38,542 INFO L93 Difference]: Finished difference Result 260 states and 275 transitions. [2022-11-20 12:04:38,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:04:38,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 12:04:38,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:38,544 INFO L225 Difference]: With dead ends: 260 [2022-11-20 12:04:38,544 INFO L226 Difference]: Without dead ends: 260 [2022-11-20 12:04:38,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:04:38,546 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 81 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:38,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 548 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:04:38,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-20 12:04:38,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 224. [2022-11-20 12:04:38,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 138 states have (on average 1.963768115942029) internal successors, (271), 219 states have internal predecessors, (271), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:04:38,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 275 transitions. [2022-11-20 12:04:38,561 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 275 transitions. Word has length 12 [2022-11-20 12:04:38,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:38,561 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 275 transitions. [2022-11-20 12:04:38,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:38,562 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 275 transitions. [2022-11-20 12:04:38,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 12:04:38,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:38,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:38,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:38,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:38,784 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting create_dataErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:04:38,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:38,785 INFO L85 PathProgramCache]: Analyzing trace with hash -2141569776, now seen corresponding path program 1 times [2022-11-20 12:04:38,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:04:38,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284305209] [2022-11-20 12:04:38,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:38,785 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 [2022-11-20 12:04:38,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:04:38,786 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:04:38,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:38,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:04:38,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:38,897 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:04:38,898 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-20 12:04:38,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:38,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:38,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:04:38,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284305209] [2022-11-20 12:04:38,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284305209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:38,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:38,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:04:38,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496855301] [2022-11-20 12:04:38,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:38,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:04:38,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:04:38,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:04:38,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:04:38,917 INFO L87 Difference]: Start difference. First operand 224 states and 275 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:39,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:39,303 INFO L93 Difference]: Finished difference Result 227 states and 271 transitions. [2022-11-20 12:04:39,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:04:39,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 12:04:39,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:39,304 INFO L225 Difference]: With dead ends: 227 [2022-11-20 12:04:39,305 INFO L226 Difference]: Without dead ends: 227 [2022-11-20 12:04:39,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:04:39,305 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 62 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:39,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 202 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:04:39,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-20 12:04:39,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 218. [2022-11-20 12:04:39,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 144 states have (on average 1.8125) internal successors, (261), 213 states have internal predecessors, (261), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:04:39,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 265 transitions. [2022-11-20 12:04:39,312 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 265 transitions. Word has length 13 [2022-11-20 12:04:39,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:39,313 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 265 transitions. [2022-11-20 12:04:39,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:39,313 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 265 transitions. [2022-11-20 12:04:39,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 12:04:39,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:39,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:39,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:39,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:39,527 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting create_dataErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:04:39,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:39,527 INFO L85 PathProgramCache]: Analyzing trace with hash -2141569775, now seen corresponding path program 1 times [2022-11-20 12:04:39,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:04:39,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712687188] [2022-11-20 12:04:39,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:39,528 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 [2022-11-20 12:04:39,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:04:39,529 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:04:39,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-20 12:04:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:39,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:04:39,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:39,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:04:39,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-20 12:04:39,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-20 12:04:39,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:39,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:39,676 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:04:39,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712687188] [2022-11-20 12:04:39,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712687188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:39,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:39,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:04:39,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131622903] [2022-11-20 12:04:39,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:39,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:04:39,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:04:39,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:04:39,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:04:39,680 INFO L87 Difference]: Start difference. First operand 218 states and 265 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:40,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:40,206 INFO L93 Difference]: Finished difference Result 239 states and 279 transitions. [2022-11-20 12:04:40,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:04:40,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 12:04:40,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:40,212 INFO L225 Difference]: With dead ends: 239 [2022-11-20 12:04:40,213 INFO L226 Difference]: Without dead ends: 239 [2022-11-20 12:04:40,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:04:40,213 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 49 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:40,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 212 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:04:40,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-20 12:04:40,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 219. [2022-11-20 12:04:40,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 154 states have (on average 1.655844155844156) internal successors, (255), 214 states have internal predecessors, (255), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:04:40,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 259 transitions. [2022-11-20 12:04:40,221 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 259 transitions. Word has length 13 [2022-11-20 12:04:40,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:40,221 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 259 transitions. [2022-11-20 12:04:40,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:40,221 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 259 transitions. [2022-11-20 12:04:40,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 12:04:40,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:40,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:40,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:40,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:40,431 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting create_dataErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:04:40,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:40,431 INFO L85 PathProgramCache]: Analyzing trace with hash 533828155, now seen corresponding path program 1 times [2022-11-20 12:04:40,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:04:40,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148590059] [2022-11-20 12:04:40,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:40,432 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 [2022-11-20 12:04:40,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:04:40,433 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:04:40,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-20 12:04:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:40,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:04:40,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:40,559 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:04:40,559 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 1 case distinctions, treesize of input 9 treesize of output 19 [2022-11-20 12:04:40,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:04:40,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-20 12:04:40,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:40,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:40,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:04:40,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148590059] [2022-11-20 12:04:40,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148590059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:40,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:40,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:04:40,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628286297] [2022-11-20 12:04:40,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:40,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:04:40,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:04:40,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:04:40,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:04:40,640 INFO L87 Difference]: Start difference. First operand 219 states and 259 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:41,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:41,414 INFO L93 Difference]: Finished difference Result 270 states and 323 transitions. [2022-11-20 12:04:41,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:04:41,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 12:04:41,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:41,418 INFO L225 Difference]: With dead ends: 270 [2022-11-20 12:04:41,418 INFO L226 Difference]: Without dead ends: 270 [2022-11-20 12:04:41,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:04:41,419 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 26 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:41,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 413 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:04:41,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-11-20 12:04:41,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 225. [2022-11-20 12:04:41,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 160 states have (on average 1.65625) internal successors, (265), 220 states have internal predecessors, (265), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:04:41,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 269 transitions. [2022-11-20 12:04:41,431 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 269 transitions. Word has length 17 [2022-11-20 12:04:41,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:41,431 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 269 transitions. [2022-11-20 12:04:41,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:41,432 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 269 transitions. [2022-11-20 12:04:41,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 12:04:41,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:41,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:41,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:41,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:41,644 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting create_dataErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:04:41,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:41,644 INFO L85 PathProgramCache]: Analyzing trace with hash 533828156, now seen corresponding path program 1 times [2022-11-20 12:04:41,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:04:41,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883615186] [2022-11-20 12:04:41,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:41,645 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 [2022-11-20 12:04:41,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:04:41,646 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:04:41,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-20 12:04:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:41,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:04:41,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:41,776 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:04:41,777 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-20 12:04:41,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:04:41,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:04:41,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-20 12:04:41,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 12:04:41,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:41,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:41,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:04:41,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883615186] [2022-11-20 12:04:41,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883615186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:41,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:04:41,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:04:41,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706727083] [2022-11-20 12:04:41,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:41,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:04:41,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:04:41,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:04:41,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:04:41,920 INFO L87 Difference]: Start difference. First operand 225 states and 269 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:42,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:42,804 INFO L93 Difference]: Finished difference Result 227 states and 267 transitions. [2022-11-20 12:04:42,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:04:42,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 12:04:42,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:42,806 INFO L225 Difference]: With dead ends: 227 [2022-11-20 12:04:42,806 INFO L226 Difference]: Without dead ends: 227 [2022-11-20 12:04:42,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:04:42,807 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 6 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:42,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 424 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 12:04:42,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-20 12:04:42,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2022-11-20 12:04:42,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 160 states have (on average 1.63125) internal successors, (261), 220 states have internal predecessors, (261), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:04:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 265 transitions. [2022-11-20 12:04:42,814 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 265 transitions. Word has length 17 [2022-11-20 12:04:42,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:42,815 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 265 transitions. [2022-11-20 12:04:42,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:42,815 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 265 transitions. [2022-11-20 12:04:42,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 12:04:42,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:42,816 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:42,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:43,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:43,028 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting create_dataErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:04:43,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:43,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1553049946, now seen corresponding path program 1 times [2022-11-20 12:04:43,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:04:43,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775087088] [2022-11-20 12:04:43,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:43,030 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 [2022-11-20 12:04:43,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:04:43,031 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:04:43,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-20 12:04:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:43,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:04:43,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:43,203 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:04:43,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2022-11-20 12:04:43,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:04:43,351 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:04:43,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-20 12:04:43,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-20 12:04:43,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:04:43,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:04:43,511 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_178 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_178) c_create_data_~data~0.base) (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (_ bv1 1)))) is different from false [2022-11-20 12:04:43,543 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_178 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse0) v_ArrVal_178) c_create_data_~data~0.base) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-20 12:04:43,567 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:04:43,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2022-11-20 12:04:43,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2022-11-20 12:04:43,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:04:43,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-20 12:04:43,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:04:43,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775087088] [2022-11-20 12:04:43,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [775087088] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:04:43,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:04:43,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2022-11-20 12:04:43,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794718663] [2022-11-20 12:04:43,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:04:43,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:04:43,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:04:43,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:04:43,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=52, Unknown=2, NotChecked=30, Total=110 [2022-11-20 12:04:43,639 INFO L87 Difference]: Start difference. First operand 225 states and 265 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:44,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:44,444 INFO L93 Difference]: Finished difference Result 232 states and 269 transitions. [2022-11-20 12:04:44,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:04:44,445 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-20 12:04:44,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:44,447 INFO L225 Difference]: With dead ends: 232 [2022-11-20 12:04:44,447 INFO L226 Difference]: Without dead ends: 232 [2022-11-20 12:04:44,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=64, Unknown=2, NotChecked=34, Total=132 [2022-11-20 12:04:44,448 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 50 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 297 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:44,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 610 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 244 Invalid, 0 Unknown, 297 Unchecked, 0.7s Time] [2022-11-20 12:04:44,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-20 12:04:44,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 224. [2022-11-20 12:04:44,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 160 states have (on average 1.61875) internal successors, (259), 219 states have internal predecessors, (259), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:04:44,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 263 transitions. [2022-11-20 12:04:44,455 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 263 transitions. Word has length 22 [2022-11-20 12:04:44,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:44,455 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 263 transitions. [2022-11-20 12:04:44,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:44,456 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 263 transitions. [2022-11-20 12:04:44,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 12:04:44,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:44,456 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:44,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:44,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:44,669 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting create_dataErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:04:44,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:44,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1553049945, now seen corresponding path program 1 times [2022-11-20 12:04:44,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:04:44,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11026585] [2022-11-20 12:04:44,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:44,671 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 [2022-11-20 12:04:44,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:04:44,672 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:04:44,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-20 12:04:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:44,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 12:04:44,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:44,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-20 12:04:44,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-20 12:04:44,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:04:44,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:04:45,045 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:04:45,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-20 12:04:45,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-20 12:04:45,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-20 12:04:45,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 12:04:45,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:45,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:04:45,576 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (and (forall ((v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_223) c_create_data_~data~0.base) .cse2))) (bvule (bvadd .cse0 (_ bv4 32) .cse1) (bvadd .cse0 (_ bv8 32) .cse1)))) (forall ((v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_224 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_223) c_create_data_~data~0.base) .cse2) (_ bv8 32) .cse1) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_224) c_create_data_~data~0.base) .cse2)))))) is different from false [2022-11-20 12:04:45,630 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse2 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse1))) (and (forall ((v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_224 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_223) c_create_data_~data~0.base) .cse1) .cse2) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_224) c_create_data_~data~0.base) .cse1)))) (forall ((v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_223) c_create_data_~data~0.base) .cse1))) (bvule (bvadd (_ bv4 32) .cse3 .cse2) (bvadd (_ bv8 32) .cse3 .cse2))))))) is different from false [2022-11-20 12:04:45,694 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse1))) (and (forall ((v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_224 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_223) c_create_data_~data~0.base) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_224) c_create_data_~data~0.base) .cse1)))) (forall ((v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_223) c_create_data_~data~0.base) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2022-11-20 12:04:45,713 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:04:45,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-11-20 12:04:45,724 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:04:45,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2022-11-20 12:04:45,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 50 [2022-11-20 12:04:45,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 78 [2022-11-20 12:04:45,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2022-11-20 12:04:45,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 58 [2022-11-20 12:04:45,893 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:04:45,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 36 [2022-11-20 12:04:45,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 36 [2022-11-20 12:04:46,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-20 12:04:46,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:04:46,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11026585] [2022-11-20 12:04:46,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11026585] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:04:46,002 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:04:46,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-11-20 12:04:46,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198706128] [2022-11-20 12:04:46,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:04:46,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:04:46,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:04:46,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:04:46,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=102, Unknown=3, NotChecked=66, Total=210 [2022-11-20 12:04:46,004 INFO L87 Difference]: Start difference. First operand 224 states and 263 transitions. Second operand has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:49,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:49,338 INFO L93 Difference]: Finished difference Result 236 states and 275 transitions. [2022-11-20 12:04:49,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:04:49,339 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-20 12:04:49,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:49,340 INFO L225 Difference]: With dead ends: 236 [2022-11-20 12:04:49,341 INFO L226 Difference]: Without dead ends: 236 [2022-11-20 12:04:49,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=60, Invalid=159, Unknown=3, NotChecked=84, Total=306 [2022-11-20 12:04:49,341 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 16 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 260 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:49,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 917 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 501 Invalid, 0 Unknown, 260 Unchecked, 2.5s Time] [2022-11-20 12:04:49,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-20 12:04:49,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 234. [2022-11-20 12:04:49,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 170 states have (on average 1.5823529411764705) internal successors, (269), 229 states have internal predecessors, (269), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:04:49,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 273 transitions. [2022-11-20 12:04:49,351 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 273 transitions. Word has length 22 [2022-11-20 12:04:49,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:49,352 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 273 transitions. [2022-11-20 12:04:49,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:04:49,352 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 273 transitions. [2022-11-20 12:04:49,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 12:04:49,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:49,354 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:49,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-20 12:04:49,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:04:49,555 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting create_dataErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:04:49,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:49,555 INFO L85 PathProgramCache]: Analyzing trace with hash 767728924, now seen corresponding path program 2 times [2022-11-20 12:04:49,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:04:49,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442553581] [2022-11-20 12:04:49,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:04:49,556 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 [2022-11-20 12:04:49,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:04:49,558 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:04:49,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-20 12:04:49,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:04:49,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:04:49,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 12:04:49,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:49,833 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:04:49,833 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-20 12:04:49,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-20 12:04:49,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:04:49,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:04:50,069 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:04:50,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-20 12:04:50,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-20 12:04:50,295 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:04:50,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-20 12:04:50,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-20 12:04:50,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-20 12:04:50,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 12:04:50,462 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:04:50,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:04:50,884 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (and (forall ((v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_286) c_create_data_~data~0.base) .cse2))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd .cse0 (_ bv8 32) .cse1)))) (forall ((v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_286) c_create_data_~data~0.base) .cse2) (_ bv8 32) .cse1) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_285) c_create_data_~data~0.base) .cse2)))))) is different from false [2022-11-20 12:04:50,934 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse3))) (and (forall ((v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_286) c_create_data_~data~0.base) .cse3))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1)))) (forall ((v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_286) c_create_data_~data~0.base) .cse3) .cse1) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_285) c_create_data_~data~0.base) .cse3))))))) is different from false [2022-11-20 12:04:51,000 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse3))) (and (forall ((v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_286) c_create_data_~data~0.base) .cse3))) (bvule (bvadd (_ bv8 32) .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_286) c_create_data_~data~0.base) .cse3) .cse1 (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_285) c_create_data_~data~0.base) .cse3))))))) is different from false [2022-11-20 12:04:51,135 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (and (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_283) (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_284) c_create_data_~data~0.base) .cse2) v_ArrVal_286) c_create_data_~data~0.base) .cse2))) (bvule (bvadd .cse0 (_ bv8 32) .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_284))) (let ((.cse3 (select (select .cse4 c_create_data_~data~0.base) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_283) .cse3 v_ArrVal_286) c_create_data_~data~0.base) .cse2) .cse1 (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_285) c_create_data_~data~0.base) .cse2)))))))) is different from false [2022-11-20 12:04:51,194 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse3))) (and (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_283) (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_284) c_create_data_~data~0.base) .cse3) v_ArrVal_286) c_create_data_~data~0.base) .cse3))) (bvule (bvadd .cse0 (_ bv8 32) .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_284))) (let ((.cse4 (select (select .cse5 c_create_data_~data~0.base) .cse3))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_283) .cse4 v_ArrVal_286) c_create_data_~data~0.base) .cse3) .cse1 (_ bv12 32)) (select |c_#length| (select (select (store .cse5 .cse4 v_ArrVal_285) c_create_data_~data~0.base) .cse3))))))))) is different from false [2022-11-20 12:04:51,279 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2))) (and (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_283) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_284) c_create_data_~data~0.base) .cse2) v_ArrVal_286) c_create_data_~data~0.base) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_284))) (let ((.cse3 (select (select .cse4 c_create_data_~data~0.base) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_283) .cse3 v_ArrVal_286) c_create_data_~data~0.base) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_285) c_create_data_~data~0.base) .cse2))))))))) is different from false [2022-11-20 12:04:51,302 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:04:51,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 90 [2022-11-20 12:04:51,317 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:04:51,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 60 [2022-11-20 12:04:51,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 754 treesize of output 640 [2022-11-20 12:04:51,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1360 treesize of output 1258 [2022-11-20 12:04:51,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1254 treesize of output 1158 [2022-11-20 12:04:51,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1158 treesize of output 958 [2022-11-20 12:04:51,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 958 treesize of output 862 [2022-11-20 12:04:51,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 862 treesize of output 830 [2022-11-20 12:05:06,870 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:05:06,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 80 [2022-11-20 12:05:06,886 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:05:06,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 60 [2022-11-20 12:05:06,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 84 [2022-11-20 12:05:06,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 144 [2022-11-20 12:05:06,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 86 [2022-11-20 12:05:06,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 100 [2022-11-20 12:05:06,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 62 [2022-11-20 12:05:07,792 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2022-11-20 12:05:07,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:05:07,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442553581] [2022-11-20 12:05:07,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442553581] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:05:07,793 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:05:07,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2022-11-20 12:05:07,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683071465] [2022-11-20 12:05:07,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:05:07,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:05:07,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:05:07,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:05:07,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=144, Unknown=6, NotChecked=174, Total=380 [2022-11-20 12:05:07,795 INFO L87 Difference]: Start difference. First operand 234 states and 273 transitions. Second operand has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 20 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:05:11,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:11,099 INFO L93 Difference]: Finished difference Result 246 states and 285 transitions. [2022-11-20 12:05:11,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:05:11,100 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 20 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-20 12:05:11,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:11,101 INFO L225 Difference]: With dead ends: 246 [2022-11-20 12:05:11,102 INFO L226 Difference]: Without dead ends: 246 [2022-11-20 12:05:11,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=85, Invalid=239, Unknown=6, NotChecked=222, Total=552 [2022-11-20 12:05:11,103 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 26 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 549 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:11,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1166 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 537 Invalid, 0 Unknown, 549 Unchecked, 2.7s Time] [2022-11-20 12:05:11,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-20 12:05:11,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 244. [2022-11-20 12:05:11,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 180 states have (on average 1.55) internal successors, (279), 239 states have internal predecessors, (279), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:05:11,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 283 transitions. [2022-11-20 12:05:11,109 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 283 transitions. Word has length 27 [2022-11-20 12:05:11,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:11,110 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 283 transitions. [2022-11-20 12:05:11,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 20 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:05:11,110 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 283 transitions. [2022-11-20 12:05:11,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 12:05:11,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:11,111 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:11,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:11,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:05:11,323 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting create_dataErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:05:11,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:11,323 INFO L85 PathProgramCache]: Analyzing trace with hash 852563911, now seen corresponding path program 3 times [2022-11-20 12:05:11,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:05:11,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967740678] [2022-11-20 12:05:11,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:05:11,324 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 [2022-11-20 12:05:11,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:05:11,325 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:05:11,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (16)] Waiting until timeout for monitored process [2022-11-20 12:05:11,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 12:05:11,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:05:11,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:05:11,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:11,741 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:05:11,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:05:11,867 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:05:11,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:05:11,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967740678] [2022-11-20 12:05:11,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967740678] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:05:11,868 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:05:11,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-20 12:05:11,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979509759] [2022-11-20 12:05:11,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:05:11,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:05:11,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:05:11,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:05:11,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:05:11,870 INFO L87 Difference]: Start difference. First operand 244 states and 283 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:05:12,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:12,052 INFO L93 Difference]: Finished difference Result 241 states and 277 transitions. [2022-11-20 12:05:12,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:05:12,053 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-20 12:05:12,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:12,054 INFO L225 Difference]: With dead ends: 241 [2022-11-20 12:05:12,054 INFO L226 Difference]: Without dead ends: 241 [2022-11-20 12:05:12,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:05:12,055 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 47 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:12,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1243 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:05:12,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-20 12:05:12,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2022-11-20 12:05:12,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 176 states have (on average 1.5397727272727273) internal successors, (271), 234 states have internal predecessors, (271), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:05:12,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 275 transitions. [2022-11-20 12:05:12,062 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 275 transitions. Word has length 32 [2022-11-20 12:05:12,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:12,063 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 275 transitions. [2022-11-20 12:05:12,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:05:12,063 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 275 transitions. [2022-11-20 12:05:12,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 12:05:12,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:12,064 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:12,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (16)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:12,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:05:12,278 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting create_dataErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:05:12,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:12,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1939829061, now seen corresponding path program 1 times [2022-11-20 12:05:12,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:05:12,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796330838] [2022-11-20 12:05:12,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:12,280 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 [2022-11-20 12:05:12,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:05:12,282 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:05:12,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (17)] Waiting until timeout for monitored process [2022-11-20 12:05:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:05:12,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:12,484 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 6 treesize of output 7 [2022-11-20 12:05:12,490 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:05:12,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:12,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:05:12,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796330838] [2022-11-20 12:05:12,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796330838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:12,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:12,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:05:12,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990734092] [2022-11-20 12:05:12,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:12,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:05:12,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:05:12,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:05:12,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:05:12,494 INFO L87 Difference]: Start difference. First operand 239 states and 275 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:05:12,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:12,798 INFO L93 Difference]: Finished difference Result 241 states and 269 transitions. [2022-11-20 12:05:12,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:05:12,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-11-20 12:05:12,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:12,800 INFO L225 Difference]: With dead ends: 241 [2022-11-20 12:05:12,800 INFO L226 Difference]: Without dead ends: 241 [2022-11-20 12:05:12,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:05:12,801 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 22 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:12,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 233 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:05:12,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-20 12:05:12,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 235. [2022-11-20 12:05:12,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 176 states have (on average 1.4715909090909092) internal successors, (259), 230 states have internal predecessors, (259), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:05:12,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 263 transitions. [2022-11-20 12:05:12,808 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 263 transitions. Word has length 41 [2022-11-20 12:05:12,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:12,808 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 263 transitions. [2022-11-20 12:05:12,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:05:12,809 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 263 transitions. [2022-11-20 12:05:12,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 12:05:12,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:12,810 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:12,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (17)] Ended with exit code 0 [2022-11-20 12:05:13,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:05:13,022 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting create_dataErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:05:13,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:13,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1939829060, now seen corresponding path program 1 times [2022-11-20 12:05:13,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:05:13,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055998843] [2022-11-20 12:05:13,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:13,023 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 [2022-11-20 12:05:13,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:05:13,024 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:05:13,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (18)] Waiting until timeout for monitored process [2022-11-20 12:05:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:13,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:05:13,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:13,225 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 6 treesize of output 5 [2022-11-20 12:05:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:05:13,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:13,237 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:05:13,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055998843] [2022-11-20 12:05:13,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055998843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:13,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:13,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:05:13,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044798907] [2022-11-20 12:05:13,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:13,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:05:13,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:05:13,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:05:13,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:05:13,240 INFO L87 Difference]: Start difference. First operand 235 states and 263 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:05:13,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:13,643 INFO L93 Difference]: Finished difference Result 237 states and 257 transitions. [2022-11-20 12:05:13,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:05:13,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-11-20 12:05:13,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:13,645 INFO L225 Difference]: With dead ends: 237 [2022-11-20 12:05:13,645 INFO L226 Difference]: Without dead ends: 237 [2022-11-20 12:05:13,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:05:13,646 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 18 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:13,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 232 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:05:13,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-20 12:05:13,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 231. [2022-11-20 12:05:13,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 176 states have (on average 1.4034090909090908) internal successors, (247), 226 states have internal predecessors, (247), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:05:13,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 251 transitions. [2022-11-20 12:05:13,652 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 251 transitions. Word has length 41 [2022-11-20 12:05:13,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:13,653 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 251 transitions. [2022-11-20 12:05:13,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:05:13,653 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 251 transitions. [2022-11-20 12:05:13,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 12:05:13,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:13,654 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:13,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (18)] Ended with exit code 0 [2022-11-20 12:05:13,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:05:13,875 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:05:13,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:13,876 INFO L85 PathProgramCache]: Analyzing trace with hash -663465002, now seen corresponding path program 1 times [2022-11-20 12:05:13,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:05:13,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604859036] [2022-11-20 12:05:13,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:13,877 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 [2022-11-20 12:05:13,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:05:13,878 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:05:13,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (19)] Waiting until timeout for monitored process [2022-11-20 12:05:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:14,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:05:14,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:14,223 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 6 treesize of output 7 [2022-11-20 12:05:14,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:05:14,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 12:05:14,572 INFO L321 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2022-11-20 12:05:14,572 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 4 case distinctions, treesize of input 22 treesize of output 34 [2022-11-20 12:05:14,616 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 12:05:14,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:05:18,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:05:18,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604859036] [2022-11-20 12:05:18,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604859036] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:05:18,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1485143951] [2022-11-20 12:05:18,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:18,804 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:05:18,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:05:18,806 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:05:18,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-20 12:05:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:19,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:05:19,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:19,289 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 6 treesize of output 7 [2022-11-20 12:05:19,318 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_780 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (= (store (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_780) |create_data_#t~malloc7.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-11-20 12:05:19,613 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:05:19,647 INFO L321 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2022-11-20 12:05:19,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 31 [2022-11-20 12:05:19,665 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:05:19,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:19,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1485143951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:19,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:05:19,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2022-11-20 12:05:19,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987551532] [2022-11-20 12:05:19,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:19,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:05:19,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:05:19,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:05:19,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=79, Unknown=3, NotChecked=18, Total=132 [2022-11-20 12:05:19,667 INFO L87 Difference]: Start difference. First operand 231 states and 251 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:20,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:20,100 INFO L93 Difference]: Finished difference Result 290 states and 319 transitions. [2022-11-20 12:05:20,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:05:20,101 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-11-20 12:05:20,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:20,103 INFO L225 Difference]: With dead ends: 290 [2022-11-20 12:05:20,103 INFO L226 Difference]: Without dead ends: 290 [2022-11-20 12:05:20,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=32, Invalid=79, Unknown=3, NotChecked=18, Total=132 [2022-11-20 12:05:20,104 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 87 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 273 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:20,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 385 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 144 Invalid, 0 Unknown, 273 Unchecked, 0.4s Time] [2022-11-20 12:05:20,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-11-20 12:05:20,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 246. [2022-11-20 12:05:20,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 189 states have (on average 1.4074074074074074) internal successors, (266), 239 states have internal predecessors, (266), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:05:20,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 272 transitions. [2022-11-20 12:05:20,112 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 272 transitions. Word has length 44 [2022-11-20 12:05:20,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:20,112 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 272 transitions. [2022-11-20 12:05:20,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:20,113 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 272 transitions. [2022-11-20 12:05:20,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 12:05:20,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:20,115 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:20,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2022-11-20 12:05:20,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (19)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:20,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:05:20,516 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:05:20,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:20,516 INFO L85 PathProgramCache]: Analyzing trace with hash -663465001, now seen corresponding path program 1 times [2022-11-20 12:05:20,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:05:20,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31965158] [2022-11-20 12:05:20,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:20,517 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 [2022-11-20 12:05:20,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:05:20,519 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:05:20,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (21)] Waiting until timeout for monitored process [2022-11-20 12:05:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:20,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:05:20,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:20,909 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 6 treesize of output 5 [2022-11-20 12:05:20,916 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 6 treesize of output 7 [2022-11-20 12:05:21,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:05:21,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 12:05:21,116 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_886 (_ BitVec 32)) (v_arrayElimCell_52 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_886) v_arrayElimCell_52 (_ bv80 32)) |c_#length|))) is different from true [2022-11-20 12:05:21,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:05:21,422 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-20 12:05:21,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-20 12:05:21,442 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:05:21,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:05:21,501 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-20 12:05:21,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:05:21,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:05:21,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31965158] [2022-11-20 12:05:21,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31965158] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:05:21,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2032231519] [2022-11-20 12:05:21,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:21,795 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:05:21,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:05:21,796 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:05:21,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-11-20 12:05:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:22,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:05:22,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:22,582 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 6 treesize of output 7 [2022-11-20 12:05:22,587 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 6 treesize of output 5 [2022-11-20 12:05:22,658 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_1002 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_1002) |c_create_data_#t~malloc7.base| (_ bv80 32)) |c_#length|)))) is different from true [2022-11-20 12:05:22,671 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_1002 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_1002) |create_data_#t~malloc7.base| (_ bv80 32)) |c_#length|))) is different from true [2022-11-20 12:05:22,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:05:22,986 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-20 12:05:22,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-20 12:05:23,003 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:05:23,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:05:23,040 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:05:23,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:23,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2032231519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:23,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:05:23,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2022-11-20 12:05:23,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536785187] [2022-11-20 12:05:23,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:23,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:05:23,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:05:23,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:05:23,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=73, Unknown=3, NotChecked=54, Total=156 [2022-11-20 12:05:23,042 INFO L87 Difference]: Start difference. First operand 246 states and 272 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:23,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:23,849 INFO L93 Difference]: Finished difference Result 308 states and 341 transitions. [2022-11-20 12:05:23,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:05:23,855 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-11-20 12:05:23,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:23,857 INFO L225 Difference]: With dead ends: 308 [2022-11-20 12:05:23,857 INFO L226 Difference]: Without dead ends: 308 [2022-11-20 12:05:23,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=87, Unknown=3, NotChecked=60, Total=182 [2022-11-20 12:05:23,858 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 75 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 553 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:23,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 470 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 325 Invalid, 0 Unknown, 553 Unchecked, 0.8s Time] [2022-11-20 12:05:23,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-20 12:05:23,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 246. [2022-11-20 12:05:23,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 189 states have (on average 1.3968253968253967) internal successors, (264), 239 states have internal predecessors, (264), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:05:23,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 270 transitions. [2022-11-20 12:05:23,866 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 270 transitions. Word has length 44 [2022-11-20 12:05:23,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:23,866 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 270 transitions. [2022-11-20 12:05:23,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:23,867 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 270 transitions. [2022-11-20 12:05:23,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 12:05:23,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:23,868 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:23,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (21)] Ended with exit code 0 [2022-11-20 12:05:24,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:24,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 12:05:24,283 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:05:24,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:24,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1359492877, now seen corresponding path program 1 times [2022-11-20 12:05:24,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:05:24,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651965340] [2022-11-20 12:05:24,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:24,283 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 [2022-11-20 12:05:24,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:05:24,284 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:05:24,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (23)] Waiting until timeout for monitored process [2022-11-20 12:05:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:24,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:05:24,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:24,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:05:24,605 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:05:24,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:05:24,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2022-11-20 12:05:24,732 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:05:24,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2022-11-20 12:05:24,787 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:05:24,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:24,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:05:24,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651965340] [2022-11-20 12:05:24,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651965340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:24,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:24,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:05:24,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891216937] [2022-11-20 12:05:24,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:24,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:05:24,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:05:24,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:05:24,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:05:24,790 INFO L87 Difference]: Start difference. First operand 246 states and 270 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:25,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:25,396 INFO L93 Difference]: Finished difference Result 288 states and 320 transitions. [2022-11-20 12:05:25,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:05:25,398 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-11-20 12:05:25,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:25,399 INFO L225 Difference]: With dead ends: 288 [2022-11-20 12:05:25,399 INFO L226 Difference]: Without dead ends: 288 [2022-11-20 12:05:25,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:05:25,400 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 28 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:25,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 706 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:05:25,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-11-20 12:05:25,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 256. [2022-11-20 12:05:25,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 199 states have (on average 1.3819095477386936) internal successors, (275), 249 states have internal predecessors, (275), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:05:25,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 281 transitions. [2022-11-20 12:05:25,407 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 281 transitions. Word has length 46 [2022-11-20 12:05:25,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:25,408 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 281 transitions. [2022-11-20 12:05:25,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:25,409 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 281 transitions. [2022-11-20 12:05:25,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 12:05:25,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:25,410 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:25,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (23)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:25,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:05:25,614 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:05:25,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:25,615 INFO L85 PathProgramCache]: Analyzing trace with hash 918765395, now seen corresponding path program 1 times [2022-11-20 12:05:25,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:05:25,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428598256] [2022-11-20 12:05:25,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:25,616 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 [2022-11-20 12:05:25,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:05:25,617 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:05:25,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (24)] Waiting until timeout for monitored process [2022-11-20 12:05:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:25,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:05:25,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:25,834 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:05:25,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:25,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:05:25,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428598256] [2022-11-20 12:05:25,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428598256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:25,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:25,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:05:25,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613921862] [2022-11-20 12:05:25,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:25,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:05:25,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:05:25,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:05:25,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:05:25,837 INFO L87 Difference]: Start difference. First operand 256 states and 281 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:25,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:25,863 INFO L93 Difference]: Finished difference Result 264 states and 287 transitions. [2022-11-20 12:05:25,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:05:25,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-11-20 12:05:25,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:25,866 INFO L225 Difference]: With dead ends: 264 [2022-11-20 12:05:25,866 INFO L226 Difference]: Without dead ends: 264 [2022-11-20 12:05:25,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:05:25,867 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 3 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:25,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 455 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:05:25,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-20 12:05:25,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2022-11-20 12:05:25,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 205 states have (on average 1.3609756097560977) internal successors, (279), 255 states have internal predecessors, (279), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:05:25,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 285 transitions. [2022-11-20 12:05:25,875 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 285 transitions. Word has length 46 [2022-11-20 12:05:25,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:25,875 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 285 transitions. [2022-11-20 12:05:25,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:25,876 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 285 transitions. [2022-11-20 12:05:25,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 12:05:25,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:25,876 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:25,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (24)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:26,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:05:26,090 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:05:26,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:26,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1934703003, now seen corresponding path program 1 times [2022-11-20 12:05:26,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:05:26,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334275349] [2022-11-20 12:05:26,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:26,092 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 [2022-11-20 12:05:26,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:05:26,093 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:05:26,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (25)] Waiting until timeout for monitored process [2022-11-20 12:05:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:26,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:05:26,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:26,562 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 6 treesize of output 7 [2022-11-20 12:05:26,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:05:26,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 12:05:26,910 INFO L321 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2022-11-20 12:05:26,910 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 4 case distinctions, treesize of input 22 treesize of output 34 [2022-11-20 12:05:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 12:05:26,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:05:31,134 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:05:31,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334275349] [2022-11-20 12:05:31,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334275349] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:05:31,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [726328681] [2022-11-20 12:05:31,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:31,135 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:05:31,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:05:31,136 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:05:31,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-20 12:05:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:31,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:05:31,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:31,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-20 12:05:32,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:05:32,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:05:32,586 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:05:32,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 31 [2022-11-20 12:05:32,668 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:05:32,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:32,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [726328681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:32,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:05:32,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2022-11-20 12:05:32,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928611766] [2022-11-20 12:05:32,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:32,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:05:32,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:05:32,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:05:32,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=170, Unknown=2, NotChecked=0, Total=210 [2022-11-20 12:05:32,670 INFO L87 Difference]: Start difference. First operand 262 states and 285 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:33,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:33,089 INFO L93 Difference]: Finished difference Result 301 states and 328 transitions. [2022-11-20 12:05:33,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:05:33,092 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-11-20 12:05:33,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:33,093 INFO L225 Difference]: With dead ends: 301 [2022-11-20 12:05:33,094 INFO L226 Difference]: Without dead ends: 301 [2022-11-20 12:05:33,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=50, Invalid=220, Unknown=2, NotChecked=0, Total=272 [2022-11-20 12:05:33,094 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 12 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:33,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 628 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 153 Unchecked, 0.3s Time] [2022-11-20 12:05:33,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-20 12:05:33,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 300. [2022-11-20 12:05:33,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 241 states have (on average 1.3195020746887967) internal successors, (318), 291 states have internal predecessors, (318), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 12:05:33,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 327 transitions. [2022-11-20 12:05:33,103 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 327 transitions. Word has length 46 [2022-11-20 12:05:33,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:33,103 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 327 transitions. [2022-11-20 12:05:33,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:33,104 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 327 transitions. [2022-11-20 12:05:33,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 12:05:33,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:33,104 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:33,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (25)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:33,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:33,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 12:05:33,520 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:05:33,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:33,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1934703002, now seen corresponding path program 1 times [2022-11-20 12:05:33,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:05:33,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381988532] [2022-11-20 12:05:33,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:33,521 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 [2022-11-20 12:05:33,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:05:33,522 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:05:33,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (27)] Waiting until timeout for monitored process [2022-11-20 12:05:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:33,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 12:05:33,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:33,857 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 6 treesize of output 5 [2022-11-20 12:05:33,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:05:34,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 12:05:34,053 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1554 (_ BitVec 32)) (v_arrayElimCell_68 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32))) (and (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_1554) v_arrayElimCell_68 (_ bv80 32)) |c_#length|) (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)))) is different from true [2022-11-20 12:05:34,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:05:34,349 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-20 12:05:34,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2022-11-20 12:05:34,377 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:05:34,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:05:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-20 12:05:34,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:05:34,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:05:34,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381988532] [2022-11-20 12:05:34,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381988532] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:05:34,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1568429474] [2022-11-20 12:05:34,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:34,855 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:05:34,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:05:34,859 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:05:34,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-20 12:05:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:35,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:05:35,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:35,526 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 6 treesize of output 5 [2022-11-20 12:05:35,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:05:35,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:05:35,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:05:36,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:05:36,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:05:36,690 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:05:36,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 28 [2022-11-20 12:05:36,867 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:05:36,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:36,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1568429474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:36,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:05:36,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2022-11-20 12:05:36,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859438970] [2022-11-20 12:05:36,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:36,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:05:36,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:05:36,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:05:36,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=225, Unknown=6, NotChecked=30, Total=306 [2022-11-20 12:05:36,869 INFO L87 Difference]: Start difference. First operand 300 states and 327 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:37,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:37,703 INFO L93 Difference]: Finished difference Result 301 states and 327 transitions. [2022-11-20 12:05:37,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:05:37,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-11-20 12:05:37,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:37,705 INFO L225 Difference]: With dead ends: 301 [2022-11-20 12:05:37,706 INFO L226 Difference]: Without dead ends: 301 [2022-11-20 12:05:37,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=280, Unknown=8, NotChecked=34, Total=380 [2022-11-20 12:05:37,706 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 11 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 148 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:37,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 533 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 213 Invalid, 0 Unknown, 148 Unchecked, 0.7s Time] [2022-11-20 12:05:37,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-20 12:05:37,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 300. [2022-11-20 12:05:37,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 241 states have (on average 1.3153526970954357) internal successors, (317), 291 states have internal predecessors, (317), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 12:05:37,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 326 transitions. [2022-11-20 12:05:37,714 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 326 transitions. Word has length 46 [2022-11-20 12:05:37,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:37,714 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 326 transitions. [2022-11-20 12:05:37,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:37,715 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 326 transitions. [2022-11-20 12:05:37,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 12:05:37,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:37,716 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:37,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:37,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (27)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:38,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:05:38,121 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:05:38,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:38,122 INFO L85 PathProgramCache]: Analyzing trace with hash 2050875696, now seen corresponding path program 1 times [2022-11-20 12:05:38,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:05:38,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699875622] [2022-11-20 12:05:38,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:38,123 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 [2022-11-20 12:05:38,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:05:38,124 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:05:38,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (29)] Waiting until timeout for monitored process [2022-11-20 12:05:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:38,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:05:38,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:38,468 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 6 treesize of output 7 [2022-11-20 12:05:38,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:05:38,525 WARN L859 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (select |c_old(#valid)| c_create_data_~data~0.base)) (exists ((v_ArrVal_1779 (_ BitVec 1))) (= |c_#valid| (store (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_1779) (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) (bvadd (_ bv4 32) c_create_data_~data~0.offset)) (_ bv1 1))))) is different from true [2022-11-20 12:05:38,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 12:05:38,823 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-20 12:05:38,823 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 4 case distinctions, treesize of input 22 treesize of output 38 [2022-11-20 12:05:38,835 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-20 12:05:38,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:05:39,252 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:05:39,252 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:05:39,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699875622] [2022-11-20 12:05:39,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699875622] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 12:05:39,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:05:39,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-20 12:05:39,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773985871] [2022-11-20 12:05:39,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:39,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:05:39,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:05:39,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:05:39,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2022-11-20 12:05:39,254 INFO L87 Difference]: Start difference. First operand 300 states and 326 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:39,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:39,522 INFO L93 Difference]: Finished difference Result 337 states and 367 transitions. [2022-11-20 12:05:39,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:05:39,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2022-11-20 12:05:39,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:39,525 INFO L225 Difference]: With dead ends: 337 [2022-11-20 12:05:39,525 INFO L226 Difference]: Without dead ends: 337 [2022-11-20 12:05:39,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 85 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2022-11-20 12:05:39,526 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 63 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:39,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 257 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 86 Unchecked, 0.3s Time] [2022-11-20 12:05:39,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-11-20 12:05:39,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 310. [2022-11-20 12:05:39,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 250 states have (on average 1.316) internal successors, (329), 300 states have internal predecessors, (329), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 12:05:39,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 340 transitions. [2022-11-20 12:05:39,537 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 340 transitions. Word has length 48 [2022-11-20 12:05:39,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:39,537 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 340 transitions. [2022-11-20 12:05:39,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:39,538 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 340 transitions. [2022-11-20 12:05:39,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 12:05:39,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:39,539 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:39,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (29)] Ended with exit code 0 [2022-11-20 12:05:39,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:05:39,760 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:05:39,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:39,760 INFO L85 PathProgramCache]: Analyzing trace with hash 2050875697, now seen corresponding path program 1 times [2022-11-20 12:05:39,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:05:39,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310814219] [2022-11-20 12:05:39,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:39,761 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 [2022-11-20 12:05:39,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:05:39,762 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:05:39,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (30)] Waiting until timeout for monitored process [2022-11-20 12:05:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:40,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:05:40,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:40,161 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 6 treesize of output 5 [2022-11-20 12:05:40,168 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 6 treesize of output 7 [2022-11-20 12:05:40,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:05:40,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 12:05:40,350 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_78 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_1892 (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_1892) v_arrayElimCell_78 (_ bv80 32)) |c_#length|))) is different from true [2022-11-20 12:05:40,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:05:40,634 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-20 12:05:40,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-20 12:05:40,658 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:05:40,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:05:40,708 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-20 12:05:40,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:05:43,235 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:05:43,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310814219] [2022-11-20 12:05:43,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310814219] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:05:43,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [566027464] [2022-11-20 12:05:43,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:43,235 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:05:43,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:05:43,236 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:05:43,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2022-11-20 12:05:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:44,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 12:05:44,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:44,060 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 6 treesize of output 5 [2022-11-20 12:05:44,067 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 6 treesize of output 7 [2022-11-20 12:05:44,132 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_2006 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_2006) |create_data_#t~malloc7.base| (_ bv80 32)) |c_#length|)))) is different from true [2022-11-20 12:05:44,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:05:44,463 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-20 12:05:44,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-20 12:05:44,481 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:05:44,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:05:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:05:44,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:44,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [566027464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:44,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:05:44,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2022-11-20 12:05:44,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66127800] [2022-11-20 12:05:44,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:44,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:05:44,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:05:44,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:05:44,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=71, Unknown=3, NotChecked=34, Total=132 [2022-11-20 12:05:44,522 INFO L87 Difference]: Start difference. First operand 310 states and 340 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:45,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:45,331 INFO L93 Difference]: Finished difference Result 369 states and 403 transitions. [2022-11-20 12:05:45,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:05:45,332 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2022-11-20 12:05:45,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:45,334 INFO L225 Difference]: With dead ends: 369 [2022-11-20 12:05:45,334 INFO L226 Difference]: Without dead ends: 369 [2022-11-20 12:05:45,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=35, Invalid=102, Unknown=3, NotChecked=42, Total=182 [2022-11-20 12:05:45,335 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 161 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 392 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:45,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 358 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 283 Invalid, 0 Unknown, 392 Unchecked, 0.7s Time] [2022-11-20 12:05:45,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-11-20 12:05:45,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 309. [2022-11-20 12:05:45,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 249 states have (on average 1.3132530120481927) internal successors, (327), 300 states have internal predecessors, (327), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 12:05:45,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 338 transitions. [2022-11-20 12:05:45,343 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 338 transitions. Word has length 48 [2022-11-20 12:05:45,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:45,344 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 338 transitions. [2022-11-20 12:05:45,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:45,344 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 338 transitions. [2022-11-20 12:05:45,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 12:05:45,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:45,345 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:45,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2022-11-20 12:05:45,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (30)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:45,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:05:45,759 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:05:45,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:45,760 INFO L85 PathProgramCache]: Analyzing trace with hash 471257990, now seen corresponding path program 1 times [2022-11-20 12:05:45,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:05:45,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703428246] [2022-11-20 12:05:45,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:45,760 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 [2022-11-20 12:05:45,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:05:45,762 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:05:45,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (32)] Waiting until timeout for monitored process [2022-11-20 12:05:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:46,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:05:46,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:46,053 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:05:46,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:46,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:05:46,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703428246] [2022-11-20 12:05:46,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703428246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:46,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:46,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:05:46,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477696794] [2022-11-20 12:05:46,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:46,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:05:46,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:05:46,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:05:46,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:05:46,055 INFO L87 Difference]: Start difference. First operand 309 states and 338 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:46,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:46,447 INFO L93 Difference]: Finished difference Result 308 states and 337 transitions. [2022-11-20 12:05:46,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:05:46,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2022-11-20 12:05:46,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:46,449 INFO L225 Difference]: With dead ends: 308 [2022-11-20 12:05:46,449 INFO L226 Difference]: Without dead ends: 308 [2022-11-20 12:05:46,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:05:46,450 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 142 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:46,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 217 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:05:46,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-20 12:05:46,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2022-11-20 12:05:46,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 249 states have (on average 1.3092369477911647) internal successors, (326), 299 states have internal predecessors, (326), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 12:05:46,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 337 transitions. [2022-11-20 12:05:46,457 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 337 transitions. Word has length 48 [2022-11-20 12:05:46,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:46,457 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 337 transitions. [2022-11-20 12:05:46,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:46,457 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 337 transitions. [2022-11-20 12:05:46,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 12:05:46,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:46,458 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:46,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (32)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:46,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:05:46,659 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:05:46,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:46,659 INFO L85 PathProgramCache]: Analyzing trace with hash 471257991, now seen corresponding path program 1 times [2022-11-20 12:05:46,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:05:46,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908483675] [2022-11-20 12:05:46,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:46,660 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 [2022-11-20 12:05:46,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:05:46,661 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:05:46,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (33)] Waiting until timeout for monitored process [2022-11-20 12:05:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:46,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:05:46,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:05:47,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:47,045 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:05:47,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908483675] [2022-11-20 12:05:47,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908483675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:47,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:47,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:05:47,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898457955] [2022-11-20 12:05:47,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:47,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:05:47,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:05:47,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:05:47,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:05:47,048 INFO L87 Difference]: Start difference. First operand 308 states and 337 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:47,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:47,465 INFO L93 Difference]: Finished difference Result 299 states and 328 transitions. [2022-11-20 12:05:47,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:05:47,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2022-11-20 12:05:47,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:47,467 INFO L225 Difference]: With dead ends: 299 [2022-11-20 12:05:47,467 INFO L226 Difference]: Without dead ends: 299 [2022-11-20 12:05:47,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:05:47,468 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 141 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:47,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 277 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:05:47,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-20 12:05:47,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-11-20 12:05:47,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 249 states have (on average 1.2730923694779117) internal successors, (317), 290 states have internal predecessors, (317), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 12:05:47,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 328 transitions. [2022-11-20 12:05:47,476 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 328 transitions. Word has length 48 [2022-11-20 12:05:47,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:47,476 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 328 transitions. [2022-11-20 12:05:47,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:47,476 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 328 transitions. [2022-11-20 12:05:47,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-20 12:05:47,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:47,477 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:47,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (33)] Ended with exit code 0 [2022-11-20 12:05:47,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:05:47,690 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:05:47,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:47,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1724095953, now seen corresponding path program 1 times [2022-11-20 12:05:47,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:05:47,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718160273] [2022-11-20 12:05:47,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:47,691 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 [2022-11-20 12:05:47,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:05:47,692 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:05:47,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (34)] Waiting until timeout for monitored process [2022-11-20 12:05:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:48,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:05:48,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:48,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:05:48,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 12:05:48,124 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:05:48,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:48,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:05:48,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718160273] [2022-11-20 12:05:48,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718160273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:48,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:48,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:05:48,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301947028] [2022-11-20 12:05:48,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:48,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:05:48,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:05:48,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:05:48,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:05:48,127 INFO L87 Difference]: Start difference. First operand 299 states and 328 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:48,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:48,882 INFO L93 Difference]: Finished difference Result 320 states and 350 transitions. [2022-11-20 12:05:48,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:05:48,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-11-20 12:05:48,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:48,884 INFO L225 Difference]: With dead ends: 320 [2022-11-20 12:05:48,884 INFO L226 Difference]: Without dead ends: 320 [2022-11-20 12:05:48,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:05:48,884 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 151 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:48,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 359 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:05:48,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-11-20 12:05:48,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 298. [2022-11-20 12:05:48,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 249 states have (on average 1.2690763052208835) internal successors, (316), 289 states have internal predecessors, (316), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 12:05:48,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 327 transitions. [2022-11-20 12:05:48,892 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 327 transitions. Word has length 49 [2022-11-20 12:05:48,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:48,893 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 327 transitions. [2022-11-20 12:05:48,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:48,893 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 327 transitions. [2022-11-20 12:05:48,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-20 12:05:48,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:48,894 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:48,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (34)] Ended with exit code 0 [2022-11-20 12:05:49,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:05:49,107 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:05:49,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:49,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1724095954, now seen corresponding path program 1 times [2022-11-20 12:05:49,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:05:49,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211601592] [2022-11-20 12:05:49,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:49,108 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 [2022-11-20 12:05:49,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:05:49,109 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:05:49,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (35)] Waiting until timeout for monitored process [2022-11-20 12:05:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:49,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:05:49,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:49,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:05:49,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:05:49,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-20 12:05:49,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:05:49,601 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:05:49,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:49,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:05:49,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211601592] [2022-11-20 12:05:49,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211601592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:49,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:49,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:05:49,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699104374] [2022-11-20 12:05:49,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:49,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:05:49,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:05:49,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:05:49,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:05:49,603 INFO L87 Difference]: Start difference. First operand 298 states and 327 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:50,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:50,454 INFO L93 Difference]: Finished difference Result 336 states and 366 transitions. [2022-11-20 12:05:50,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:05:50,456 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-11-20 12:05:50,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:50,458 INFO L225 Difference]: With dead ends: 336 [2022-11-20 12:05:50,458 INFO L226 Difference]: Without dead ends: 336 [2022-11-20 12:05:50,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:05:50,459 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 182 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:50,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 343 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 12:05:50,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-11-20 12:05:50,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 297. [2022-11-20 12:05:50,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 249 states have (on average 1.2650602409638554) internal successors, (315), 288 states have internal predecessors, (315), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 12:05:50,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 326 transitions. [2022-11-20 12:05:50,466 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 326 transitions. Word has length 49 [2022-11-20 12:05:50,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:50,466 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 326 transitions. [2022-11-20 12:05:50,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:50,467 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 326 transitions. [2022-11-20 12:05:50,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 12:05:50,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:50,468 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:50,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (35)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:50,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:05:50,681 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:05:50,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:50,682 INFO L85 PathProgramCache]: Analyzing trace with hash -498440897, now seen corresponding path program 1 times [2022-11-20 12:05:50,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:05:50,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113381361] [2022-11-20 12:05:50,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:50,683 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 [2022-11-20 12:05:50,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:05:50,684 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:05:50,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (36)] Waiting until timeout for monitored process [2022-11-20 12:05:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:51,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:05:51,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:51,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:05:51,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 12:05:51,372 INFO L321 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2022-11-20 12:05:51,373 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 4 case distinctions, treesize of input 22 treesize of output 34 [2022-11-20 12:05:51,435 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 12:05:51,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:05:55,564 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:05:55,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113381361] [2022-11-20 12:05:55,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113381361] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:05:55,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1982067023] [2022-11-20 12:05:55,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:55,565 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:05:55,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:05:55,566 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:05:55,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2022-11-20 12:05:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:56,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:05:56,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:56,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-20 12:05:57,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:05:57,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:05:57,080 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:05:57,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 31 [2022-11-20 12:05:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:05:57,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:57,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1982067023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:57,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:05:57,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2022-11-20 12:05:57,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644320140] [2022-11-20 12:05:57,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:57,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:05:57,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:05:57,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:05:57,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=170, Unknown=2, NotChecked=0, Total=210 [2022-11-20 12:05:57,159 INFO L87 Difference]: Start difference. First operand 297 states and 326 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:57,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:57,514 INFO L93 Difference]: Finished difference Result 314 states and 345 transitions. [2022-11-20 12:05:57,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:05:57,515 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2022-11-20 12:05:57,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:57,517 INFO L225 Difference]: With dead ends: 314 [2022-11-20 12:05:57,517 INFO L226 Difference]: Without dead ends: 314 [2022-11-20 12:05:57,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=50, Invalid=220, Unknown=2, NotChecked=0, Total=272 [2022-11-20 12:05:57,517 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 14 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:57,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 568 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 145 Unchecked, 0.3s Time] [2022-11-20 12:05:57,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-11-20 12:05:57,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 307. [2022-11-20 12:05:57,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 259 states have (on average 1.2625482625482625) internal successors, (327), 297 states have internal predecessors, (327), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 12:05:57,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 337 transitions. [2022-11-20 12:05:57,524 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 337 transitions. Word has length 50 [2022-11-20 12:05:57,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:57,525 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 337 transitions. [2022-11-20 12:05:57,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:05:57,525 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 337 transitions. [2022-11-20 12:05:57,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 12:05:57,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:57,526 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:57,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:57,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (36)] Ended with exit code 0 [2022-11-20 12:05:57,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:05:57,932 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:05:57,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:57,933 INFO L85 PathProgramCache]: Analyzing trace with hash -498440896, now seen corresponding path program 1 times [2022-11-20 12:05:57,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:05:57,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936678142] [2022-11-20 12:05:57,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:57,933 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:05:57,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:05:57,934 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:05:57,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (38)] Waiting until timeout for monitored process [2022-11-20 12:05:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:58,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:05:58,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:58,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:05:58,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 12:05:58,526 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_93 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_2806 (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_2806) v_arrayElimCell_93 (_ bv80 32)) |c_#length|))) is different from true [2022-11-20 12:05:58,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:05:58,819 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-20 12:05:58,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2022-11-20 12:05:58,837 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:05:58,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:05:58,937 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-20 12:05:58,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:05:59,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:05:59,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936678142] [2022-11-20 12:05:59,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936678142] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:05:59,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2050044516] [2022-11-20 12:05:59,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:59,244 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:05:59,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:05:59,245 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:05:59,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2022-11-20 12:05:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:59,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:05:59,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:59,996 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 6 treesize of output 5 [2022-11-20 12:06:00,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:06:00,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:06:00,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:06:01,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:06:01,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:06:01,186 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:06:01,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 28 [2022-11-20 12:06:01,373 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:06:01,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:06:01,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2050044516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:01,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:06:01,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2022-11-20 12:06:01,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058102652] [2022-11-20 12:06:01,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:01,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:06:01,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:06:01,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:06:01,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=4, NotChecked=30, Total=306 [2022-11-20 12:06:01,375 INFO L87 Difference]: Start difference. First operand 307 states and 337 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:06:02,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:02,466 INFO L93 Difference]: Finished difference Result 308 states and 337 transitions. [2022-11-20 12:06:02,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:06:02,467 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2022-11-20 12:06:02,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:02,468 INFO L225 Difference]: With dead ends: 308 [2022-11-20 12:06:02,468 INFO L226 Difference]: Without dead ends: 308 [2022-11-20 12:06:02,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=282, Unknown=6, NotChecked=34, Total=380 [2022-11-20 12:06:02,469 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 16 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:02,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 586 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 233 Invalid, 0 Unknown, 127 Unchecked, 0.9s Time] [2022-11-20 12:06:02,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-20 12:06:02,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 298. [2022-11-20 12:06:02,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 251 states have (on average 1.2629482071713147) internal successors, (317), 289 states have internal predecessors, (317), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 12:06:02,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 326 transitions. [2022-11-20 12:06:02,476 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 326 transitions. Word has length 50 [2022-11-20 12:06:02,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:02,476 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 326 transitions. [2022-11-20 12:06:02,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:06:02,477 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 326 transitions. [2022-11-20 12:06:02,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-20 12:06:02,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:02,478 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:02,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (39)] Ended with exit code 0 [2022-11-20 12:06:02,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (38)] Ended with exit code 0 [2022-11-20 12:06:02,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:06:02,884 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:06:02,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:02,885 INFO L85 PathProgramCache]: Analyzing trace with hash -42553449, now seen corresponding path program 1 times [2022-11-20 12:06:02,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:06:02,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637228074] [2022-11-20 12:06:02,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:02,885 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 [2022-11-20 12:06:02,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:06:02,887 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:06:02,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (40)] Waiting until timeout for monitored process [2022-11-20 12:06:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:03,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:06:03,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:03,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:06:03,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 12:06:03,327 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:06:03,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:06:03,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:06:03,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637228074] [2022-11-20 12:06:03,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [637228074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:03,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:03,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:06:03,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901665239] [2022-11-20 12:06:03,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:03,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:06:03,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:06:03,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:06:03,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:06:03,329 INFO L87 Difference]: Start difference. First operand 298 states and 326 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:06:04,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:04,087 INFO L93 Difference]: Finished difference Result 320 states and 349 transitions. [2022-11-20 12:06:04,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:06:04,088 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2022-11-20 12:06:04,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:04,089 INFO L225 Difference]: With dead ends: 320 [2022-11-20 12:06:04,089 INFO L226 Difference]: Without dead ends: 320 [2022-11-20 12:06:04,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:06:04,090 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 136 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:04,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 362 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:06:04,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-11-20 12:06:04,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 297. [2022-11-20 12:06:04,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 251 states have (on average 1.2589641434262948) internal successors, (316), 288 states have internal predecessors, (316), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 12:06:04,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 325 transitions. [2022-11-20 12:06:04,097 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 325 transitions. Word has length 53 [2022-11-20 12:06:04,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:04,097 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 325 transitions. [2022-11-20 12:06:04,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:06:04,098 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 325 transitions. [2022-11-20 12:06:04,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-20 12:06:04,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:04,099 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:04,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (40)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:04,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:06:04,307 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:06:04,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:04,307 INFO L85 PathProgramCache]: Analyzing trace with hash -42553448, now seen corresponding path program 1 times [2022-11-20 12:06:04,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:06:04,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [172178179] [2022-11-20 12:06:04,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:04,308 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 [2022-11-20 12:06:04,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:06:04,308 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:06:04,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (41)] Waiting until timeout for monitored process [2022-11-20 12:06:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:04,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:06:04,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:04,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:06:04,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:06:04,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:06:04,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-20 12:06:04,844 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:06:04,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:06:04,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:06:04,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [172178179] [2022-11-20 12:06:04,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [172178179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:04,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:04,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:06:04,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449946356] [2022-11-20 12:06:04,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:04,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:06:04,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:06:04,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:06:04,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:06:04,846 INFO L87 Difference]: Start difference. First operand 297 states and 325 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:06:05,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:05,622 INFO L93 Difference]: Finished difference Result 336 states and 365 transitions. [2022-11-20 12:06:05,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:06:05,623 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2022-11-20 12:06:05,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:05,624 INFO L225 Difference]: With dead ends: 336 [2022-11-20 12:06:05,624 INFO L226 Difference]: Without dead ends: 336 [2022-11-20 12:06:05,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:06:05,625 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 270 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:05,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 314 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:06:05,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-11-20 12:06:05,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 296. [2022-11-20 12:06:05,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 251 states have (on average 1.254980079681275) internal successors, (315), 287 states have internal predecessors, (315), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 12:06:05,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 324 transitions. [2022-11-20 12:06:05,631 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 324 transitions. Word has length 53 [2022-11-20 12:06:05,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:05,632 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 324 transitions. [2022-11-20 12:06:05,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:06:05,632 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 324 transitions. [2022-11-20 12:06:05,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-20 12:06:05,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:05,633 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:05,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (41)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:05,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:06:05,844 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting create_dataErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:06:05,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:05,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1556982670, now seen corresponding path program 1 times [2022-11-20 12:06:05,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:06:05,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378172037] [2022-11-20 12:06:05,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:05,846 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 [2022-11-20 12:06:05,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:06:05,849 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:06:05,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (42)] Waiting until timeout for monitored process [2022-11-20 12:06:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:06,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:06:06,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:06,492 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 6 treesize of output 7 [2022-11-20 12:06:06,535 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:06:06,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 12:06:06,547 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:06:06,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:06:06,588 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:06:06,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:06:06,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378172037] [2022-11-20 12:06:06,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378172037] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:06:06,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:06:06,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2022-11-20 12:06:06,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265853608] [2022-11-20 12:06:06,589 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:06:06,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:06:06,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:06:06,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:06:06,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:06:06,591 INFO L87 Difference]: Start difference. First operand 296 states and 324 transitions. Second operand has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:06:07,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:07,016 INFO L93 Difference]: Finished difference Result 301 states and 329 transitions. [2022-11-20 12:06:07,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:06:07,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-20 12:06:07,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:07,018 INFO L225 Difference]: With dead ends: 301 [2022-11-20 12:06:07,018 INFO L226 Difference]: Without dead ends: 301 [2022-11-20 12:06:07,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:06:07,019 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 50 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:07,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 240 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:06:07,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-20 12:06:07,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 295. [2022-11-20 12:06:07,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 251 states have (on average 1.247011952191235) internal successors, (313), 286 states have internal predecessors, (313), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 12:06:07,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 322 transitions. [2022-11-20 12:06:07,026 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 322 transitions. Word has length 53 [2022-11-20 12:06:07,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:07,026 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 322 transitions. [2022-11-20 12:06:07,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:06:07,027 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 322 transitions. [2022-11-20 12:06:07,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-20 12:06:07,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:07,027 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:07,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (42)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:07,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:06:07,234 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting create_dataErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:06:07,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:07,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1556982671, now seen corresponding path program 1 times [2022-11-20 12:06:07,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:06:07,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673015163] [2022-11-20 12:06:07,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:07,236 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 [2022-11-20 12:06:07,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:06:07,236 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:06:07,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (43)] Waiting until timeout for monitored process [2022-11-20 12:06:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:07,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:06:07,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:07,878 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 6 treesize of output 5 [2022-11-20 12:06:07,982 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:06:07,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:06:08,000 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:06:08,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:06:08,329 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:06:08,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:06:08,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673015163] [2022-11-20 12:06:08,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673015163] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:06:08,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:06:08,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2022-11-20 12:06:08,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869509520] [2022-11-20 12:06:08,330 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:06:08,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:06:08,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:06:08,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:06:08,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:06:08,331 INFO L87 Difference]: Start difference. First operand 295 states and 322 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:06:08,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:08,979 INFO L93 Difference]: Finished difference Result 299 states and 325 transitions. [2022-11-20 12:06:08,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:06:08,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-20 12:06:08,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:08,982 INFO L225 Difference]: With dead ends: 299 [2022-11-20 12:06:08,982 INFO L226 Difference]: Without dead ends: 299 [2022-11-20 12:06:08,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:06:08,982 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 58 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:08,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 280 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 74 Unchecked, 0.6s Time] [2022-11-20 12:06:08,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-20 12:06:08,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 293. [2022-11-20 12:06:08,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 251 states have (on average 1.2310756972111554) internal successors, (309), 284 states have internal predecessors, (309), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 12:06:08,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 318 transitions. [2022-11-20 12:06:08,989 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 318 transitions. Word has length 53 [2022-11-20 12:06:08,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:08,989 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 318 transitions. [2022-11-20 12:06:08,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:06:08,989 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 318 transitions. [2022-11-20 12:06:08,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 12:06:08,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:08,990 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:09,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (43)] Ended with exit code 0 [2022-11-20 12:06:09,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:06:09,208 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:06:09,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:09,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1319156755, now seen corresponding path program 1 times [2022-11-20 12:06:09,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:06:09,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121018551] [2022-11-20 12:06:09,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:09,209 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 [2022-11-20 12:06:09,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:06:09,210 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:06:09,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (44)] Waiting until timeout for monitored process [2022-11-20 12:06:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:09,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 12:06:09,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:09,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:06:09,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:06:09,998 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:06:09,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 26 [2022-11-20 12:06:10,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:06:10,209 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:06:10,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2022-11-20 12:06:10,248 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 12:06:10,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:06:10,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:06:10,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121018551] [2022-11-20 12:06:10,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121018551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:10,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:10,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:06:10,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72755915] [2022-11-20 12:06:10,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:10,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:06:10,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:06:10,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:06:10,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:06:10,250 INFO L87 Difference]: Start difference. First operand 293 states and 318 transitions. Second operand has 11 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:06:11,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:11,673 INFO L93 Difference]: Finished difference Result 425 states and 471 transitions. [2022-11-20 12:06:11,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:06:11,674 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2022-11-20 12:06:11,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:11,675 INFO L225 Difference]: With dead ends: 425 [2022-11-20 12:06:11,675 INFO L226 Difference]: Without dead ends: 425 [2022-11-20 12:06:11,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:06:11,676 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 284 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:11,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 557 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 498 Invalid, 0 Unknown, 106 Unchecked, 1.2s Time] [2022-11-20 12:06:11,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-11-20 12:06:11,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 331. [2022-11-20 12:06:11,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 286 states have (on average 1.2622377622377623) internal successors, (361), 317 states have internal predecessors, (361), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (13), 10 states have call predecessors, (13), 5 states have call successors, (13) [2022-11-20 12:06:11,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 379 transitions. [2022-11-20 12:06:11,685 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 379 transitions. Word has length 54 [2022-11-20 12:06:11,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:11,685 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 379 transitions. [2022-11-20 12:06:11,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:06:11,685 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 379 transitions. [2022-11-20 12:06:11,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 12:06:11,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:11,686 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:11,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (44)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:11,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:06:11,901 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:06:11,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:11,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1319156754, now seen corresponding path program 1 times [2022-11-20 12:06:11,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:06:11,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093309598] [2022-11-20 12:06:11,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:11,902 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 [2022-11-20 12:06:11,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:06:11,904 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:06:11,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (45)] Waiting until timeout for monitored process [2022-11-20 12:06:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:12,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 12:06:12,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:12,428 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 6 treesize of output 7 [2022-11-20 12:06:12,456 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:06:12,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:06:12,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:06:12,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:06:12,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:06:12,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:06:13,117 INFO L321 Elim1Store]: treesize reduction 29, result has 9.4 percent of original size [2022-11-20 12:06:13,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 37 [2022-11-20 12:06:13,138 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 12:06:13,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-20 12:06:13,177 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:06:13,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:06:13,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:06:13,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093309598] [2022-11-20 12:06:13,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093309598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:13,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:13,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:06:13,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711500910] [2022-11-20 12:06:13,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:13,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:06:13,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:06:13,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:06:13,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:06:13,179 INFO L87 Difference]: Start difference. First operand 331 states and 379 transitions. Second operand has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:06:15,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:15,814 INFO L93 Difference]: Finished difference Result 519 states and 583 transitions. [2022-11-20 12:06:15,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:06:15,819 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2022-11-20 12:06:15,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:15,821 INFO L225 Difference]: With dead ends: 519 [2022-11-20 12:06:15,821 INFO L226 Difference]: Without dead ends: 519 [2022-11-20 12:06:15,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:06:15,822 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 381 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 132 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:15,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 746 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 731 Invalid, 0 Unknown, 132 Unchecked, 2.2s Time] [2022-11-20 12:06:15,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-11-20 12:06:15,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 352. [2022-11-20 12:06:15,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 306 states have (on average 1.2679738562091503) internal successors, (388), 336 states have internal predecessors, (388), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (16), 12 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-20 12:06:15,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 410 transitions. [2022-11-20 12:06:15,832 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 410 transitions. Word has length 54 [2022-11-20 12:06:15,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:15,832 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 410 transitions. [2022-11-20 12:06:15,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:06:15,833 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 410 transitions. [2022-11-20 12:06:15,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 12:06:15,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:15,834 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:15,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (45)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:16,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:06:16,049 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:06:16,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:16,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1610777395, now seen corresponding path program 1 times [2022-11-20 12:06:16,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:06:16,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21221408] [2022-11-20 12:06:16,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:16,050 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 [2022-11-20 12:06:16,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:06:16,051 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:06:16,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (46)] Waiting until timeout for monitored process [2022-11-20 12:06:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:16,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:06:16,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:16,820 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 6 treesize of output 7 [2022-11-20 12:06:17,538 INFO L321 Elim1Store]: treesize reduction 123, result has 21.7 percent of original size [2022-11-20 12:06:17,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 34 treesize of output 56 [2022-11-20 12:06:17,589 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:06:17,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:06:21,753 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:06:21,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21221408] [2022-11-20 12:06:21,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21221408] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:06:21,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1160411317] [2022-11-20 12:06:21,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:21,754 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:06:21,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:06:21,755 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:06:21,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2022-11-20 12:06:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:22,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:06:22,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:22,903 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 6 treesize of output 7 [2022-11-20 12:06:22,931 WARN L859 $PredicateComparison]: unable to prove that (exists ((|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_old(#valid)| c_create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (exists ((v_ArrVal_4172 (_ BitVec 1)) (v_ArrVal_4173 (_ BitVec 1))) (= (store (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_4172) |create_data_#t~malloc7.base| v_ArrVal_4173) |c_#valid|)))) is different from true [2022-11-20 12:06:23,118 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4172 (_ BitVec 1)) (v_ArrVal_4173 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_old(#valid)| c_create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_4172) |create_data_#t~malloc7.base| v_ArrVal_4173) c_create_data_~nextData~0.base (_ bv1 1)) |c_#valid|))) is different from true [2022-11-20 12:06:25,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:06:25,778 INFO L321 Elim1Store]: treesize reduction 91, result has 27.2 percent of original size [2022-11-20 12:06:25,779 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 5 case distinctions, treesize of input 29 treesize of output 53 [2022-11-20 12:06:25,810 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked. [2022-11-20 12:06:25,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:06:30,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1160411317] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:06:30,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:06:30,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-20 12:06:30,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238377661] [2022-11-20 12:06:30,664 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:06:30,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 12:06:30,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:06:30,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 12:06:30,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=116, Unknown=6, NotChecked=46, Total=210 [2022-11-20 12:06:30,665 INFO L87 Difference]: Start difference. First operand 352 states and 410 transitions. Second operand has 13 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 12:06:30,837 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3973 (_ BitVec 1)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (let ((.cse0 (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select .cse0 |create_data_#t~malloc7.base|)) (= |c_#valid| (store (store .cse0 |create_data_#t~malloc7.base| v_ArrVal_3973) c_create_data_~nextData~0.base (_ bv1 1)))))) (exists ((v_ArrVal_4172 (_ BitVec 1)) (v_ArrVal_4173 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_old(#valid)| c_create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_4172) |create_data_#t~malloc7.base| v_ArrVal_4173) c_create_data_~nextData~0.base (_ bv1 1)) |c_#valid|)))) is different from true [2022-11-20 12:06:31,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:31,219 INFO L93 Difference]: Finished difference Result 458 states and 538 transitions. [2022-11-20 12:06:31,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:06:31,227 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 55 [2022-11-20 12:06:31,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:31,229 INFO L225 Difference]: With dead ends: 458 [2022-11-20 12:06:31,229 INFO L226 Difference]: Without dead ends: 458 [2022-11-20 12:06:31,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=62, Invalid=183, Unknown=7, NotChecked=90, Total=342 [2022-11-20 12:06:31,230 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 73 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 720 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:31,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 725 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 147 Invalid, 0 Unknown, 720 Unchecked, 0.3s Time] [2022-11-20 12:06:31,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-11-20 12:06:31,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 374. [2022-11-20 12:06:31,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 327 states have (on average 1.2660550458715596) internal successors, (414), 356 states have internal predecessors, (414), 6 states have call successors, (6), 3 states have call predecessors, (6), 7 states have return successors, (20), 14 states have call predecessors, (20), 6 states have call successors, (20) [2022-11-20 12:06:31,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 440 transitions. [2022-11-20 12:06:31,245 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 440 transitions. Word has length 55 [2022-11-20 12:06:31,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:31,245 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 440 transitions. [2022-11-20 12:06:31,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 12:06:31,246 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 440 transitions. [2022-11-20 12:06:31,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 12:06:31,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:31,247 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:31,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (47)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:31,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (46)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:31,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:06:31,663 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:06:31,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1610777396, now seen corresponding path program 1 times [2022-11-20 12:06:31,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:06:31,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472112784] [2022-11-20 12:06:31,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:31,664 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 [2022-11-20 12:06:31,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:06:31,665 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:06:31,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (48)] Waiting until timeout for monitored process [2022-11-20 12:06:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:32,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:06:32,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:32,436 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 6 treesize of output 5 [2022-11-20 12:06:32,443 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 6 treesize of output 7 [2022-11-20 12:06:32,921 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4370 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (v_ArrVal_4369 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_4370) |create_data_#t~malloc7.base| v_ArrVal_4369) create_data_~nextData~0.base (_ bv16 32)) |c_#length|) (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)))) is different from true [2022-11-20 12:06:33,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:06:33,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:06:33,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:06:33,220 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-20 12:06:33,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2022-11-20 12:06:33,267 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-20 12:06:33,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-11-20 12:06:33,326 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked. [2022-11-20 12:06:33,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:06:33,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:06:33,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472112784] [2022-11-20 12:06:33,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472112784] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:06:33,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [508355088] [2022-11-20 12:06:33,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:33,730 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:06:33,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:06:33,731 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:06:33,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (49)] Waiting until timeout for monitored process [2022-11-20 12:06:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:35,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 12:06:35,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:35,206 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 6 treesize of output 5 [2022-11-20 12:06:35,213 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 6 treesize of output 7 [2022-11-20 12:06:35,458 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_4567 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32)) (v_ArrVal_4568 (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_4568) |create_data_#t~malloc7.base| v_ArrVal_4567) |c_#length|))) is different from true [2022-11-20 12:06:35,867 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_4567 (_ BitVec 32)) (v_ArrVal_4568 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_4568) |create_data_#t~malloc7.base| v_ArrVal_4567) c_create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) is different from true [2022-11-20 12:06:35,999 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (v_ArrVal_4567 (_ BitVec 32)) (v_ArrVal_4568 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_4568) |create_data_#t~malloc7.base| v_ArrVal_4567) create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) is different from true [2022-11-20 12:06:36,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:06:36,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:06:36,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:06:36,183 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-20 12:06:36,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2022-11-20 12:06:36,229 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-20 12:06:36,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-11-20 12:06:36,255 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked. [2022-11-20 12:06:36,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:06:40,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [508355088] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:06:40,796 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:06:40,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2022-11-20 12:06:40,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869136817] [2022-11-20 12:06:40,797 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:06:40,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:06:40,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:06:40,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:06:40,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=88, Unknown=6, NotChecked=84, Total=210 [2022-11-20 12:06:40,798 INFO L87 Difference]: Start difference. First operand 374 states and 440 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 11 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 12:06:40,892 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_4567 (_ BitVec 32)) (v_ArrVal_4568 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_4568) |create_data_#t~malloc7.base| v_ArrVal_4567) c_create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) (exists ((v_ArrVal_4370 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (v_ArrVal_4369 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_4370) |create_data_#t~malloc7.base| v_ArrVal_4369) create_data_~nextData~0.base (_ bv16 32)) |c_#length|) (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|))))) is different from true [2022-11-20 12:06:40,946 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (v_ArrVal_4567 (_ BitVec 32)) (v_ArrVal_4568 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_4568) |create_data_#t~malloc7.base| v_ArrVal_4567) create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) (exists ((v_ArrVal_4370 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (v_ArrVal_4369 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_4370) |create_data_#t~malloc7.base| v_ArrVal_4369) create_data_~nextData~0.base (_ bv16 32)) |c_#length|) (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|))))) is different from true [2022-11-20 12:06:41,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:41,354 INFO L93 Difference]: Finished difference Result 524 states and 613 transitions. [2022-11-20 12:06:41,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:06:41,354 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 11 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 55 [2022-11-20 12:06:41,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:41,356 INFO L225 Difference]: With dead ends: 524 [2022-11-20 12:06:41,356 INFO L226 Difference]: Without dead ends: 524 [2022-11-20 12:06:41,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=43, Invalid=105, Unknown=8, NotChecked=150, Total=306 [2022-11-20 12:06:41,357 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 124 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1314 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:41,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 822 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 225 Invalid, 0 Unknown, 1314 Unchecked, 0.5s Time] [2022-11-20 12:06:41,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-11-20 12:06:41,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 373. [2022-11-20 12:06:41,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 326 states have (on average 1.2607361963190185) internal successors, (411), 356 states have internal predecessors, (411), 6 states have call successors, (6), 3 states have call predecessors, (6), 7 states have return successors, (20), 13 states have call predecessors, (20), 6 states have call successors, (20) [2022-11-20 12:06:41,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 437 transitions. [2022-11-20 12:06:41,367 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 437 transitions. Word has length 55 [2022-11-20 12:06:41,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:41,367 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 437 transitions. [2022-11-20 12:06:41,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 11 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 12:06:41,368 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 437 transitions. [2022-11-20 12:06:41,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 12:06:41,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:41,369 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:41,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (49)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:41,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (48)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:41,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:06:41,778 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:06:41,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:41,779 INFO L85 PathProgramCache]: Analyzing trace with hash 948367782, now seen corresponding path program 1 times [2022-11-20 12:06:41,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:06:41,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414015472] [2022-11-20 12:06:41,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:41,779 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 [2022-11-20 12:06:41,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:06:41,781 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:06:41,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (50)] Waiting until timeout for monitored process [2022-11-20 12:06:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:42,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:06:42,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:42,347 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 6 treesize of output 7 [2022-11-20 12:06:42,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:06:42,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 12:06:42,736 INFO L321 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2022-11-20 12:06:42,737 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 4 case distinctions, treesize of input 22 treesize of output 34 [2022-11-20 12:06:42,783 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:06:42,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:06:46,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:06:46,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414015472] [2022-11-20 12:06:46,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414015472] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:06:46,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2046123566] [2022-11-20 12:06:46,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:46,942 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:06:46,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:06:46,943 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:06:46,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (51)] Waiting until timeout for monitored process [2022-11-20 12:06:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:47,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:06:47,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:47,810 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 6 treesize of output 7 [2022-11-20 12:06:47,839 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4831 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (= |c_#valid| (store (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_4831) |create_data_#t~malloc7.base| (_ bv1 1)))) is different from true [2022-11-20 12:06:48,089 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:06:48,120 INFO L321 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2022-11-20 12:06:48,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 31 [2022-11-20 12:06:48,133 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 5 not checked. [2022-11-20 12:06:48,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:06:48,786 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-20 12:06:48,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2046123566] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 12:06:48,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:06:48,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 12 [2022-11-20 12:06:48,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111852745] [2022-11-20 12:06:48,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:48,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:06:48,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:06:48,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:06:48,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=108, Unknown=3, NotChecked=22, Total=182 [2022-11-20 12:06:48,788 INFO L87 Difference]: Start difference. First operand 373 states and 437 transitions. Second operand has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:06:49,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:49,038 INFO L93 Difference]: Finished difference Result 398 states and 461 transitions. [2022-11-20 12:06:49,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:06:49,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2022-11-20 12:06:49,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:49,039 INFO L225 Difference]: With dead ends: 398 [2022-11-20 12:06:49,040 INFO L226 Difference]: Without dead ends: 398 [2022-11-20 12:06:49,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 152 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=49, Invalid=108, Unknown=3, NotChecked=22, Total=182 [2022-11-20 12:06:49,040 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 53 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:49,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 289 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 158 Unchecked, 0.2s Time] [2022-11-20 12:06:49,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-11-20 12:06:49,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 374. [2022-11-20 12:06:49,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 327 states have (on average 1.2568807339449541) internal successors, (411), 356 states have internal predecessors, (411), 6 states have call successors, (6), 3 states have call predecessors, (6), 7 states have return successors, (20), 14 states have call predecessors, (20), 6 states have call successors, (20) [2022-11-20 12:06:49,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 437 transitions. [2022-11-20 12:06:49,063 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 437 transitions. Word has length 56 [2022-11-20 12:06:49,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:49,064 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 437 transitions. [2022-11-20 12:06:49,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:06:49,064 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 437 transitions. [2022-11-20 12:06:49,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 12:06:49,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:49,065 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:49,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (51)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:49,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (50)] Ended with exit code 0 [2022-11-20 12:06:49,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:06:49,473 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:06:49,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:49,474 INFO L85 PathProgramCache]: Analyzing trace with hash 948367783, now seen corresponding path program 1 times [2022-11-20 12:06:49,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:06:49,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207791838] [2022-11-20 12:06:49,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:49,475 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 [2022-11-20 12:06:49,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:06:49,476 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:06:49,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (52)] Waiting until timeout for monitored process [2022-11-20 12:06:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:50,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:06:50,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:50,016 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 6 treesize of output 5 [2022-11-20 12:06:50,024 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 6 treesize of output 7 [2022-11-20 12:06:50,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:06:50,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 12:06:50,191 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_136 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_4957 (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_4957) v_arrayElimCell_136 (_ bv80 32))))) is different from true [2022-11-20 12:06:50,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:06:50,519 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-20 12:06:50,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-20 12:06:50,537 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:06:50,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:06:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 5 not checked. [2022-11-20 12:06:50,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:06:52,902 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:06:52,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207791838] [2022-11-20 12:06:52,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207791838] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:06:52,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1563223671] [2022-11-20 12:06:52,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:52,902 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:06:52,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:06:52,904 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:06:52,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (53)] Waiting until timeout for monitored process [2022-11-20 12:06:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:53,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:06:53,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:53,934 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 6 treesize of output 7 [2022-11-20 12:06:53,940 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 6 treesize of output 5 [2022-11-20 12:06:54,006 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_5087 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5087) |c_create_data_#t~malloc7.base| (_ bv80 32)) |c_#length|)))) is different from true [2022-11-20 12:06:54,018 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5087 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5087) |create_data_#t~malloc7.base| (_ bv80 32))))) is different from true [2022-11-20 12:06:54,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:06:54,366 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-20 12:06:54,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-20 12:06:54,384 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:06:54,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:06:54,417 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-20 12:06:54,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:06:54,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1563223671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:54,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:06:54,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2022-11-20 12:06:54,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267533244] [2022-11-20 12:06:54,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:54,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:06:54,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:06:54,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:06:54,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=72, Unknown=4, NotChecked=54, Total=156 [2022-11-20 12:06:54,419 INFO L87 Difference]: Start difference. First operand 374 states and 437 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:06:55,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:55,050 INFO L93 Difference]: Finished difference Result 431 states and 500 transitions. [2022-11-20 12:06:55,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:06:55,051 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2022-11-20 12:06:55,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:55,053 INFO L225 Difference]: With dead ends: 431 [2022-11-20 12:06:55,053 INFO L226 Difference]: Without dead ends: 431 [2022-11-20 12:06:55,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=32, Invalid=86, Unknown=4, NotChecked=60, Total=182 [2022-11-20 12:06:55,054 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 63 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 513 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:55,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 379 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 243 Invalid, 0 Unknown, 513 Unchecked, 0.6s Time] [2022-11-20 12:06:55,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-11-20 12:06:55,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 371. [2022-11-20 12:06:55,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 324 states have (on average 1.25) internal successors, (405), 356 states have internal predecessors, (405), 6 states have call successors, (6), 3 states have call predecessors, (6), 7 states have return successors, (20), 11 states have call predecessors, (20), 6 states have call successors, (20) [2022-11-20 12:06:55,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 431 transitions. [2022-11-20 12:06:55,063 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 431 transitions. Word has length 56 [2022-11-20 12:06:55,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:55,063 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 431 transitions. [2022-11-20 12:06:55,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:06:55,064 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 431 transitions. [2022-11-20 12:06:55,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-20 12:06:55,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:55,065 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:55,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (52)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:55,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (53)] Ended with exit code 0 [2022-11-20 12:06:55,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 12:06:55,480 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:06:55,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:55,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1897094198, now seen corresponding path program 1 times [2022-11-20 12:06:55,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:06:55,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928341265] [2022-11-20 12:06:55,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:55,481 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 [2022-11-20 12:06:55,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:06:55,482 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:06:55,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (54)] Waiting until timeout for monitored process [2022-11-20 12:06:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:55,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:06:55,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:55,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:06:56,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-20 12:06:56,021 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:06:56,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:06:56,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:06:56,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928341265] [2022-11-20 12:06:56,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928341265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:56,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:56,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:06:56,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837678152] [2022-11-20 12:06:56,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:56,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:06:56,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:06:56,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:06:56,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:06:56,023 INFO L87 Difference]: Start difference. First operand 371 states and 431 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:06:56,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:56,451 INFO L93 Difference]: Finished difference Result 409 states and 469 transitions. [2022-11-20 12:06:56,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:06:56,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2022-11-20 12:06:56,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:56,454 INFO L225 Difference]: With dead ends: 409 [2022-11-20 12:06:56,454 INFO L226 Difference]: Without dead ends: 409 [2022-11-20 12:06:56,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:06:56,455 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 153 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:56,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 361 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:06:56,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-11-20 12:06:56,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 373. [2022-11-20 12:06:56,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 326 states have (on average 1.2484662576687116) internal successors, (407), 358 states have internal predecessors, (407), 6 states have call successors, (6), 3 states have call predecessors, (6), 7 states have return successors, (20), 11 states have call predecessors, (20), 6 states have call successors, (20) [2022-11-20 12:06:56,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 433 transitions. [2022-11-20 12:06:56,463 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 433 transitions. Word has length 57 [2022-11-20 12:06:56,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:56,463 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 433 transitions. [2022-11-20 12:06:56,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:06:56,464 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 433 transitions. [2022-11-20 12:06:56,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-20 12:06:56,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:56,465 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:56,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (54)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:56,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:06:56,678 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:06:56,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:56,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1897093746, now seen corresponding path program 1 times [2022-11-20 12:06:56,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:06:56,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219390309] [2022-11-20 12:06:56,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:56,679 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 [2022-11-20 12:06:56,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:06:56,680 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:06:56,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (55)] Waiting until timeout for monitored process [2022-11-20 12:06:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:57,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:06:57,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:57,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:06:57,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 12:06:57,226 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:06:57,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:06:57,226 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:06:57,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219390309] [2022-11-20 12:06:57,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219390309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:57,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:57,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:06:57,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959994933] [2022-11-20 12:06:57,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:57,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:06:57,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:06:57,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:06:57,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:06:57,228 INFO L87 Difference]: Start difference. First operand 373 states and 433 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:06:57,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:57,879 INFO L93 Difference]: Finished difference Result 391 states and 451 transitions. [2022-11-20 12:06:57,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:06:57,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2022-11-20 12:06:57,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:57,882 INFO L225 Difference]: With dead ends: 391 [2022-11-20 12:06:57,882 INFO L226 Difference]: Without dead ends: 391 [2022-11-20 12:06:57,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:06:57,883 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 166 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:57,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 318 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 12:06:57,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-11-20 12:06:57,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 375. [2022-11-20 12:06:57,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 328 states have (on average 1.25) internal successors, (410), 360 states have internal predecessors, (410), 6 states have call successors, (6), 3 states have call predecessors, (6), 7 states have return successors, (20), 11 states have call predecessors, (20), 6 states have call successors, (20) [2022-11-20 12:06:57,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 436 transitions. [2022-11-20 12:06:57,892 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 436 transitions. Word has length 57 [2022-11-20 12:06:57,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:57,892 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 436 transitions. [2022-11-20 12:06:57,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:06:57,892 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 436 transitions. [2022-11-20 12:06:57,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-20 12:06:57,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:57,893 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:57,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (55)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:58,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:06:58,107 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:06:58,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:58,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1897093745, now seen corresponding path program 1 times [2022-11-20 12:06:58,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:06:58,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077832742] [2022-11-20 12:06:58,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:58,108 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 [2022-11-20 12:06:58,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:06:58,109 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:06:58,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (56)] Waiting until timeout for monitored process [2022-11-20 12:06:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:58,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 12:06:58,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:06:58,682 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 6 treesize of output 7 [2022-11-20 12:06:58,693 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 6 treesize of output 5 [2022-11-20 12:06:58,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:06:58,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 12:06:58,914 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_145 (_ BitVec 32)) (v_ArrVal_5440 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5440) v_arrayElimCell_145 (_ bv80 32))))) is different from true [2022-11-20 12:06:59,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:06:59,180 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-20 12:06:59,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-20 12:06:59,203 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:06:59,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:06:59,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:06:59,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:06:59,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-11-20 12:06:59,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:06:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-20 12:06:59,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:06:59,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2022-11-20 12:06:59,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:06:59,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:06:59,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:06:59,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:00,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:07:00,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077832742] [2022-11-20 12:07:00,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077832742] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:07:00,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [333814042] [2022-11-20 12:07:00,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:00,483 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:07:00,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:07:00,484 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:07:00,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (57)] Waiting until timeout for monitored process [2022-11-20 12:07:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:01,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 12:07:01,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:07:02,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:07:02,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:02,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2022-11-20 12:07:02,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:07:02,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:07:02,479 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:07:02,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 14 [2022-11-20 12:07:02,595 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:07:02,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:07:02,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [333814042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:02,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:07:02,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 20 [2022-11-20 12:07:02,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056848134] [2022-11-20 12:07:02,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:02,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:07:02,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:07:02,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:07:02,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=457, Unknown=1, NotChecked=42, Total=552 [2022-11-20 12:07:02,597 INFO L87 Difference]: Start difference. First operand 375 states and 436 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:07:03,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:07:03,184 INFO L93 Difference]: Finished difference Result 397 states and 461 transitions. [2022-11-20 12:07:03,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:07:03,185 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2022-11-20 12:07:03,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:07:03,186 INFO L225 Difference]: With dead ends: 397 [2022-11-20 12:07:03,186 INFO L226 Difference]: Without dead ends: 397 [2022-11-20 12:07:03,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=64, Invalid=589, Unknown=1, NotChecked=48, Total=702 [2022-11-20 12:07:03,187 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 39 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 180 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:07:03,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 1039 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 180 Unchecked, 0.4s Time] [2022-11-20 12:07:03,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-11-20 12:07:03,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 383. [2022-11-20 12:07:03,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 336 states have (on average 1.25) internal successors, (420), 367 states have internal predecessors, (420), 6 states have call successors, (6), 3 states have call predecessors, (6), 7 states have return successors, (20), 12 states have call predecessors, (20), 6 states have call successors, (20) [2022-11-20 12:07:03,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 446 transitions. [2022-11-20 12:07:03,194 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 446 transitions. Word has length 57 [2022-11-20 12:07:03,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:07:03,195 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 446 transitions. [2022-11-20 12:07:03,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:07:03,195 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 446 transitions. [2022-11-20 12:07:03,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-20 12:07:03,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:07:03,196 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:07:03,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (56)] Forceful destruction successful, exit code 0 [2022-11-20 12:07:03,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (57)] Forceful destruction successful, exit code 0 [2022-11-20 12:07:03,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 12:07:03,611 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:07:03,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:03,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1768854146, now seen corresponding path program 1 times [2022-11-20 12:07:03,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:07:03,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572447470] [2022-11-20 12:07:03,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:03,612 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 [2022-11-20 12:07:03,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:07:03,614 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:07:03,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (58)] Waiting until timeout for monitored process [2022-11-20 12:07:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:04,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 12:07:04,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:07:04,403 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 6 treesize of output 7 [2022-11-20 12:07:04,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-20 12:07:04,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:07:04,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-20 12:07:09,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:09,896 INFO L321 Elim1Store]: treesize reduction 82, result has 29.3 percent of original size [2022-11-20 12:07:09,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 25 treesize of output 49 [2022-11-20 12:07:10,026 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 12:07:10,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:07:10,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:07:10,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572447470] [2022-11-20 12:07:10,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572447470] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:07:10,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [543704821] [2022-11-20 12:07:10,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:10,248 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:07:10,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:07:10,249 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:07:10,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (59)] Waiting until timeout for monitored process [2022-11-20 12:07:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:11,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:07:11,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:07:11,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-20 12:07:12,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:12,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:12,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:12,758 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-20 12:07:12,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 45 [2022-11-20 12:07:12,845 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:07:12,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:07:13,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [543704821] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:07:13,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:07:13,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18 [2022-11-20 12:07:13,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449453746] [2022-11-20 12:07:13,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:07:13,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 12:07:13,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:07:13,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 12:07:13,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=379, Unknown=9, NotChecked=0, Total=462 [2022-11-20 12:07:13,087 INFO L87 Difference]: Start difference. First operand 383 states and 446 transitions. Second operand has 19 states, 18 states have (on average 5.111111111111111) internal successors, (92), 19 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:07:26,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:07:26,821 INFO L93 Difference]: Finished difference Result 426 states and 492 transitions. [2022-11-20 12:07:26,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:07:26,821 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.111111111111111) internal successors, (92), 19 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 57 [2022-11-20 12:07:26,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:07:26,822 INFO L225 Difference]: With dead ends: 426 [2022-11-20 12:07:26,822 INFO L226 Difference]: Without dead ends: 426 [2022-11-20 12:07:26,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=122, Invalid=614, Unknown=20, NotChecked=0, Total=756 [2022-11-20 12:07:26,823 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 154 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 440 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:07:26,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 936 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 150 Invalid, 0 Unknown, 440 Unchecked, 0.3s Time] [2022-11-20 12:07:26,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-11-20 12:07:26,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 400. [2022-11-20 12:07:26,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 352 states have (on average 1.2443181818181819) internal successors, (438), 383 states have internal predecessors, (438), 6 states have call successors, (6), 3 states have call predecessors, (6), 8 states have return successors, (20), 13 states have call predecessors, (20), 6 states have call successors, (20) [2022-11-20 12:07:26,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 464 transitions. [2022-11-20 12:07:26,831 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 464 transitions. Word has length 57 [2022-11-20 12:07:26,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:07:26,831 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 464 transitions. [2022-11-20 12:07:26,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.111111111111111) internal successors, (92), 19 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:07:26,831 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 464 transitions. [2022-11-20 12:07:26,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-20 12:07:26,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:07:26,832 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:07:26,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (59)] Forceful destruction successful, exit code 0 [2022-11-20 12:07:27,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (58)] Ended with exit code 0 [2022-11-20 12:07:27,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:07:27,244 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:07:27,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:27,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1768854147, now seen corresponding path program 1 times [2022-11-20 12:07:27,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:07:27,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [701751753] [2022-11-20 12:07:27,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:27,245 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 [2022-11-20 12:07:27,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:07:27,246 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:07:27,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (60)] Waiting until timeout for monitored process [2022-11-20 12:07:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:27,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-20 12:07:27,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:07:28,023 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 6 treesize of output 5 [2022-11-20 12:07:28,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:07:28,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-20 12:07:28,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:07:28,526 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:07:28,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 50 [2022-11-20 12:07:28,699 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:07:28,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 50 [2022-11-20 12:07:28,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2022-11-20 12:07:29,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:29,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:29,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:29,765 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-20 12:07:29,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 38 [2022-11-20 12:07:29,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:29,808 INFO L321 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2022-11-20 12:07:29,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 20 [2022-11-20 12:07:29,979 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 12:07:29,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:07:32,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:07:32,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [701751753] [2022-11-20 12:07:32,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [701751753] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:07:32,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [865908069] [2022-11-20 12:07:32,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:32,640 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:07:32,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:07:32,641 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:07:32,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (61)] Waiting until timeout for monitored process [2022-11-20 12:07:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:34,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:07:34,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:07:34,159 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 6 treesize of output 5 [2022-11-20 12:07:34,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:34,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:07:34,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:07:41,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:41,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:41,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:07:41,701 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-20 12:07:41,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 40 [2022-11-20 12:07:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:07:41,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:07:46,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [865908069] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:07:46,906 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:07:46,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 18 [2022-11-20 12:07:46,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504740760] [2022-11-20 12:07:46,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:07:46,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 12:07:46,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:07:46,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 12:07:46,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=396, Unknown=8, NotChecked=0, Total=462 [2022-11-20 12:07:46,908 INFO L87 Difference]: Start difference. First operand 400 states and 464 transitions. Second operand has 19 states, 18 states have (on average 5.166666666666667) internal successors, (93), 19 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:08:04,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:08:04,940 INFO L93 Difference]: Finished difference Result 403 states and 466 transitions. [2022-11-20 12:08:04,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:08:04,940 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.166666666666667) internal successors, (93), 19 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 57 [2022-11-20 12:08:04,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:08:04,941 INFO L225 Difference]: With dead ends: 403 [2022-11-20 12:08:04,941 INFO L226 Difference]: Without dead ends: 403 [2022-11-20 12:08:04,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=126, Invalid=846, Unknown=20, NotChecked=0, Total=992 [2022-11-20 12:08:04,942 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 35 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 367 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:08:04,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1190 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 214 Invalid, 0 Unknown, 367 Unchecked, 0.6s Time] [2022-11-20 12:08:04,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-11-20 12:08:04,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 400. [2022-11-20 12:08:04,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 352 states have (on average 1.2414772727272727) internal successors, (437), 383 states have internal predecessors, (437), 6 states have call successors, (6), 3 states have call predecessors, (6), 8 states have return successors, (20), 13 states have call predecessors, (20), 6 states have call successors, (20) [2022-11-20 12:08:04,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 463 transitions. [2022-11-20 12:08:04,949 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 463 transitions. Word has length 57 [2022-11-20 12:08:04,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:08:04,950 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 463 transitions. [2022-11-20 12:08:04,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.166666666666667) internal successors, (93), 19 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:08:04,950 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 463 transitions. [2022-11-20 12:08:04,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-20 12:08:04,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:08:04,951 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:08:04,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (61)] Forceful destruction successful, exit code 0 [2022-11-20 12:08:05,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (60)] Ended with exit code 0 [2022-11-20 12:08:05,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:08:05,363 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting create_dataErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:08:05,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:05,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1611244523, now seen corresponding path program 1 times [2022-11-20 12:08:05,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:08:05,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858164430] [2022-11-20 12:08:05,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:05,364 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 [2022-11-20 12:08:05,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:08:05,365 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:08:05,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (62)] Waiting until timeout for monitored process [2022-11-20 12:08:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:06,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:08:06,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:06,201 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 6 treesize of output 5 [2022-11-20 12:08:06,303 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:08:06,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:08:06,366 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:08:06,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:08:06,833 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:08:06,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:08:06,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858164430] [2022-11-20 12:08:06,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858164430] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:08:06,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:08:06,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2022-11-20 12:08:06,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20952193] [2022-11-20 12:08:06,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:08:06,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:08:06,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:08:06,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:08:06,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:08:06,834 INFO L87 Difference]: Start difference. First operand 400 states and 463 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:08:07,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:08:07,202 INFO L93 Difference]: Finished difference Result 401 states and 463 transitions. [2022-11-20 12:08:07,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:08:07,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-11-20 12:08:07,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:08:07,205 INFO L225 Difference]: With dead ends: 401 [2022-11-20 12:08:07,206 INFO L226 Difference]: Without dead ends: 401 [2022-11-20 12:08:07,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:08:07,206 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 47 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:08:07,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 380 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 94 Unchecked, 0.3s Time] [2022-11-20 12:08:07,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-11-20 12:08:07,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 383. [2022-11-20 12:08:07,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 337 states have (on average 1.2373887240356083) internal successors, (417), 366 states have internal predecessors, (417), 6 states have call successors, (6), 3 states have call predecessors, (6), 8 states have return successors, (20), 13 states have call predecessors, (20), 6 states have call successors, (20) [2022-11-20 12:08:07,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 443 transitions. [2022-11-20 12:08:07,222 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 443 transitions. Word has length 57 [2022-11-20 12:08:07,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:08:07,222 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 443 transitions. [2022-11-20 12:08:07,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:08:07,222 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 443 transitions. [2022-11-20 12:08:07,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-20 12:08:07,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:08:07,223 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:08:07,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (62)] Forceful destruction successful, exit code 0 [2022-11-20 12:08:07,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:08:07,441 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:08:07,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:07,442 INFO L85 PathProgramCache]: Analyzing trace with hash 848375861, now seen corresponding path program 1 times [2022-11-20 12:08:07,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:08:07,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54466561] [2022-11-20 12:08:07,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:07,442 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 [2022-11-20 12:08:07,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:08:07,443 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:08:07,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (63)] Waiting until timeout for monitored process [2022-11-20 12:08:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:08,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:08:08,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:08,052 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 6 treesize of output 7 [2022-11-20 12:08:08,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:08:08,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 12:08:08,511 INFO L321 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2022-11-20 12:08:08,511 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 4 case distinctions, treesize of input 22 treesize of output 34 [2022-11-20 12:08:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:08:08,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:08:12,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:08:12,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54466561] [2022-11-20 12:08:12,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54466561] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:08:12,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [77363131] [2022-11-20 12:08:12,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:12,812 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:08:12,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:08:12,814 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:08:12,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (64)] Waiting until timeout for monitored process [2022-11-20 12:08:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:13,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:08:13,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:14,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-20 12:08:14,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:08:14,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:08:14,966 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:08:14,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 31 [2022-11-20 12:08:15,058 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-20 12:08:15,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:08:15,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [77363131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:08:15,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:08:15,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2022-11-20 12:08:15,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226090803] [2022-11-20 12:08:15,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:08:15,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:08:15,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:08:15,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:08:15,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=170, Unknown=2, NotChecked=0, Total=210 [2022-11-20 12:08:15,060 INFO L87 Difference]: Start difference. First operand 383 states and 443 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:08:15,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:08:15,566 INFO L93 Difference]: Finished difference Result 404 states and 466 transitions. [2022-11-20 12:08:15,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:08:15,567 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2022-11-20 12:08:15,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:08:15,568 INFO L225 Difference]: With dead ends: 404 [2022-11-20 12:08:15,569 INFO L226 Difference]: Without dead ends: 404 [2022-11-20 12:08:15,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=50, Invalid=220, Unknown=2, NotChecked=0, Total=272 [2022-11-20 12:08:15,569 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 11 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:08:15,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 593 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 140 Unchecked, 0.4s Time] [2022-11-20 12:08:15,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-11-20 12:08:15,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 395. [2022-11-20 12:08:15,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 349 states have (on average 1.2320916905444126) internal successors, (430), 378 states have internal predecessors, (430), 6 states have call successors, (6), 3 states have call predecessors, (6), 8 states have return successors, (17), 13 states have call predecessors, (17), 6 states have call successors, (17) [2022-11-20 12:08:15,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 453 transitions. [2022-11-20 12:08:15,577 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 453 transitions. Word has length 58 [2022-11-20 12:08:15,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:08:15,577 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 453 transitions. [2022-11-20 12:08:15,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:08:15,578 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 453 transitions. [2022-11-20 12:08:15,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-20 12:08:15,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:08:15,578 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:08:15,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (64)] Forceful destruction successful, exit code 0 [2022-11-20 12:08:15,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (63)] Ended with exit code 0 [2022-11-20 12:08:15,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:08:15,990 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:08:15,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:15,990 INFO L85 PathProgramCache]: Analyzing trace with hash 848375862, now seen corresponding path program 1 times [2022-11-20 12:08:15,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:08:15,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134594009] [2022-11-20 12:08:15,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:15,991 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 [2022-11-20 12:08:15,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:08:15,992 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:08:15,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (65)] Waiting until timeout for monitored process [2022-11-20 12:08:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:16,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:08:16,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:16,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:08:16,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 12:08:16,787 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7002 (_ BitVec 32)) (v_arrayElimCell_180 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_7002) v_arrayElimCell_180 (_ bv80 32))))) is different from true [2022-11-20 12:08:17,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:08:17,204 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-20 12:08:17,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2022-11-20 12:08:17,229 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:08:17,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:08:17,349 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 5 not checked. [2022-11-20 12:08:17,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:08:17,716 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:08:17,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134594009] [2022-11-20 12:08:17,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134594009] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:08:17,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [875737176] [2022-11-20 12:08:17,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:17,717 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:08:17,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:08:17,718 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:08:17,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (66)] Waiting until timeout for monitored process [2022-11-20 12:08:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:18,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:08:18,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:18,850 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 6 treesize of output 5 [2022-11-20 12:08:18,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:08:18,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:08:19,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:08:20,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:08:20,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:08:20,426 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:08:20,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 28 [2022-11-20 12:08:20,605 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-20 12:08:20,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:08:20,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [875737176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:08:20,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:08:20,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2022-11-20 12:08:20,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594576680] [2022-11-20 12:08:20,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:08:20,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:08:20,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:08:20,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:08:20,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=228, Unknown=3, NotChecked=30, Total=306 [2022-11-20 12:08:20,607 INFO L87 Difference]: Start difference. First operand 395 states and 453 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:08:21,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:08:21,171 INFO L93 Difference]: Finished difference Result 395 states and 452 transitions. [2022-11-20 12:08:21,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:08:21,172 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2022-11-20 12:08:21,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:08:21,174 INFO L225 Difference]: With dead ends: 395 [2022-11-20 12:08:21,175 INFO L226 Difference]: Without dead ends: 395 [2022-11-20 12:08:21,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=283, Unknown=5, NotChecked=34, Total=380 [2022-11-20 12:08:21,175 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 10 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:08:21,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 441 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 122 Unchecked, 0.4s Time] [2022-11-20 12:08:21,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-11-20 12:08:21,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 383. [2022-11-20 12:08:21,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 338 states have (on average 1.2307692307692308) internal successors, (416), 367 states have internal predecessors, (416), 6 states have call successors, (6), 3 states have call predecessors, (6), 7 states have return successors, (16), 12 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-20 12:08:21,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 438 transitions. [2022-11-20 12:08:21,180 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 438 transitions. Word has length 58 [2022-11-20 12:08:21,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:08:21,181 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 438 transitions. [2022-11-20 12:08:21,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:08:21,181 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 438 transitions. [2022-11-20 12:08:21,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-20 12:08:21,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:08:21,182 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:08:21,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (66)] Ended with exit code 0 [2022-11-20 12:08:21,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (65)] Ended with exit code 0 [2022-11-20 12:08:21,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:08:21,587 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:08:21,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:21,587 INFO L85 PathProgramCache]: Analyzing trace with hash -2094859879, now seen corresponding path program 1 times [2022-11-20 12:08:21,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:08:21,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167729887] [2022-11-20 12:08:21,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:21,588 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 [2022-11-20 12:08:21,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:08:21,589 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:08:21,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (67)] Waiting until timeout for monitored process [2022-11-20 12:08:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:22,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:08:22,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:22,471 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 6 treesize of output 7 [2022-11-20 12:08:23,276 INFO L321 Elim1Store]: treesize reduction 123, result has 21.7 percent of original size [2022-11-20 12:08:23,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 34 treesize of output 56 [2022-11-20 12:08:23,337 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:08:23,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:08:27,535 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:08:27,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167729887] [2022-11-20 12:08:27,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167729887] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:08:27,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1459298927] [2022-11-20 12:08:27,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:27,535 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:08:27,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:08:27,536 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:08:27,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (68)] Waiting until timeout for monitored process [2022-11-20 12:08:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:28,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 12:08:28,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:28,905 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 6 treesize of output 7 [2022-11-20 12:08:28,982 WARN L859 $PredicateComparison]: unable to prove that (exists ((|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_old(#valid)| c_create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (exists ((v_ArrVal_7522 (_ BitVec 1)) (v_ArrVal_7520 (_ BitVec 1))) (= (store (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_7522) |create_data_#t~malloc7.base| v_ArrVal_7520) |c_#valid|)))) is different from true [2022-11-20 12:08:29,216 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7522 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32)) (v_ArrVal_7520 (_ BitVec 1))) (and (= (_ bv0 1) (select (store |c_old(#valid)| c_create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= |c_#valid| (store (store (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_7522) |create_data_#t~malloc7.base| v_ArrVal_7520) c_create_data_~nextData~0.base (_ bv1 1))))) is different from true [2022-11-20 12:08:30,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:08:30,107 INFO L321 Elim1Store]: treesize reduction 91, result has 27.2 percent of original size [2022-11-20 12:08:30,107 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 5 case distinctions, treesize of input 29 treesize of output 53 [2022-11-20 12:08:30,144 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked. [2022-11-20 12:08:30,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:08:34,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1459298927] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:08:34,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:08:34,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-20 12:08:34,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364428466] [2022-11-20 12:08:34,708 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:08:34,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:08:34,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:08:34,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:08:34,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=140, Unknown=6, NotChecked=50, Total=240 [2022-11-20 12:08:34,709 INFO L87 Difference]: Start difference. First operand 383 states and 438 transitions. Second operand has 14 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 12:08:34,912 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_7522 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32)) (v_ArrVal_7520 (_ BitVec 1))) (and (= (_ bv0 1) (select (store |c_old(#valid)| c_create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= |c_#valid| (store (store (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_7522) |create_data_#t~malloc7.base| v_ArrVal_7520) c_create_data_~nextData~0.base (_ bv1 1))))) (exists ((v_ArrVal_7325 (_ BitVec 1)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (let ((.cse0 (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select .cse0 |create_data_#t~malloc7.base|)) (= |c_#valid| (store (store .cse0 |create_data_#t~malloc7.base| v_ArrVal_7325) c_create_data_~nextData~0.base (_ bv1 1))))))) is different from true [2022-11-20 12:08:35,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:08:35,275 INFO L93 Difference]: Finished difference Result 509 states and 589 transitions. [2022-11-20 12:08:35,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:08:35,276 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 59 [2022-11-20 12:08:35,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:08:35,279 INFO L225 Difference]: With dead ends: 509 [2022-11-20 12:08:35,279 INFO L226 Difference]: Without dead ends: 509 [2022-11-20 12:08:35,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=65, Invalid=212, Unknown=7, NotChecked=96, Total=380 [2022-11-20 12:08:35,279 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 75 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 596 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:08:35,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 767 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 138 Invalid, 0 Unknown, 596 Unchecked, 0.3s Time] [2022-11-20 12:08:35,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-11-20 12:08:35,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 411. [2022-11-20 12:08:35,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 365 states have (on average 1.2328767123287672) internal successors, (450), 393 states have internal predecessors, (450), 6 states have call successors, (6), 3 states have call predecessors, (6), 8 states have return successors, (20), 14 states have call predecessors, (20), 6 states have call successors, (20) [2022-11-20 12:08:35,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 476 transitions. [2022-11-20 12:08:35,288 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 476 transitions. Word has length 59 [2022-11-20 12:08:35,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:08:35,288 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 476 transitions. [2022-11-20 12:08:35,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 12:08:35,288 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 476 transitions. [2022-11-20 12:08:35,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-20 12:08:35,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:08:35,289 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:08:35,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (67)] Forceful destruction successful, exit code 0 [2022-11-20 12:08:35,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (68)] Forceful destruction successful, exit code 0 [2022-11-20 12:08:35,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 12:08:35,707 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:08:35,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:35,708 INFO L85 PathProgramCache]: Analyzing trace with hash -2094859878, now seen corresponding path program 1 times [2022-11-20 12:08:35,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:08:35,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263816835] [2022-11-20 12:08:35,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:35,708 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 [2022-11-20 12:08:35,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:08:35,709 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:08:35,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (69)] Waiting until timeout for monitored process [2022-11-20 12:08:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:36,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 12:08:36,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:36,486 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 6 treesize of output 5 [2022-11-20 12:08:36,494 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 6 treesize of output 7 [2022-11-20 12:08:36,639 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7720 (_ BitVec 32)) (v_ArrVal_7721 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_7721) |create_data_#t~malloc7.base| v_ArrVal_7720) |c_#length|))) is different from true [2022-11-20 12:08:37,105 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7720 (_ BitVec 32)) (v_ArrVal_7721 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= |c_#length| (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_7721) |create_data_#t~malloc7.base| v_ArrVal_7720) create_data_~nextData~0.base (_ bv16 32))))) is different from true [2022-11-20 12:08:37,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:08:37,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:08:37,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:08:37,437 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-20 12:08:37,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2022-11-20 12:08:37,500 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-20 12:08:37,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-11-20 12:08:37,553 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked. [2022-11-20 12:08:37,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:08:39,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:08:39,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263816835] [2022-11-20 12:08:39,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263816835] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:08:39,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1068820430] [2022-11-20 12:08:39,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:39,934 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:08:39,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:08:39,934 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:08:39,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (70)] Waiting until timeout for monitored process [2022-11-20 12:08:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:41,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 12:08:41,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:41,622 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 6 treesize of output 7 [2022-11-20 12:08:41,631 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 6 treesize of output 5 [2022-11-20 12:08:42,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:08:42,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:08:42,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:08:42,553 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-20 12:08:42,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2022-11-20 12:08:42,606 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-20 12:08:42,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-11-20 12:08:42,635 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked. [2022-11-20 12:08:42,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:08:46,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1068820430] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:08:46,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:08:46,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 8 [2022-11-20 12:08:46,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008824836] [2022-11-20 12:08:46,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:08:46,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:08:46,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:08:46,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:08:46,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=69, Unknown=4, NotChecked=34, Total=132 [2022-11-20 12:08:46,972 INFO L87 Difference]: Start difference. First operand 411 states and 476 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:08:47,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:08:47,699 INFO L93 Difference]: Finished difference Result 482 states and 556 transitions. [2022-11-20 12:08:47,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:08:47,700 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2022-11-20 12:08:47,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:08:47,702 INFO L225 Difference]: With dead ends: 482 [2022-11-20 12:08:47,702 INFO L226 Difference]: Without dead ends: 482 [2022-11-20 12:08:47,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=37, Invalid=99, Unknown=4, NotChecked=42, Total=182 [2022-11-20 12:08:47,703 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 133 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 650 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:08:47,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 454 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 212 Invalid, 0 Unknown, 650 Unchecked, 0.7s Time] [2022-11-20 12:08:47,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-11-20 12:08:47,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 409. [2022-11-20 12:08:47,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 363 states have (on average 1.2286501377410468) internal successors, (446), 393 states have internal predecessors, (446), 6 states have call successors, (6), 3 states have call predecessors, (6), 8 states have return successors, (20), 12 states have call predecessors, (20), 6 states have call successors, (20) [2022-11-20 12:08:47,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 472 transitions. [2022-11-20 12:08:47,709 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 472 transitions. Word has length 59 [2022-11-20 12:08:47,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:08:47,709 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 472 transitions. [2022-11-20 12:08:47,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:08:47,710 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 472 transitions. [2022-11-20 12:08:47,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-20 12:08:47,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:08:47,710 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:08:47,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (69)] Forceful destruction successful, exit code 0 [2022-11-20 12:08:47,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (70)] Ended with exit code 0 [2022-11-20 12:08:48,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 12:08:48,111 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:08:48,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:48,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1179322216, now seen corresponding path program 1 times [2022-11-20 12:08:48,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:08:48,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799132514] [2022-11-20 12:08:48,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:48,112 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 [2022-11-20 12:08:48,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:08:48,113 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:08:48,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (71)] Waiting until timeout for monitored process [2022-11-20 12:08:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:48,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 12:08:48,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:49,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-20 12:08:49,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:08:49,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-20 12:08:50,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:08:50,438 INFO L321 Elim1Store]: treesize reduction 82, result has 29.3 percent of original size [2022-11-20 12:08:50,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 25 treesize of output 49 [2022-11-20 12:08:50,571 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 12:08:50,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:08:50,822 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:08:50,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799132514] [2022-11-20 12:08:50,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799132514] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:08:50,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [356955051] [2022-11-20 12:08:50,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:50,823 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:08:50,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:08:50,824 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:08:50,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (72)] Waiting until timeout for monitored process [2022-11-20 12:08:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:52,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:08:52,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:54,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-20 12:08:55,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:08:55,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:08:55,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:08:55,885 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-20 12:08:55,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 45 [2022-11-20 12:08:55,993 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:08:55,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:08:56,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [356955051] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:08:56,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:08:56,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18 [2022-11-20 12:08:56,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155947931] [2022-11-20 12:08:56,269 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:08:56,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 12:08:56,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:08:56,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 12:08:56,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=380, Unknown=8, NotChecked=0, Total=462 [2022-11-20 12:08:56,271 INFO L87 Difference]: Start difference. First operand 409 states and 472 transitions. Second operand has 19 states, 18 states have (on average 5.555555555555555) internal successors, (100), 19 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:08:57,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:08:57,115 INFO L93 Difference]: Finished difference Result 433 states and 497 transitions. [2022-11-20 12:08:57,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:08:57,115 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.555555555555555) internal successors, (100), 19 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2022-11-20 12:08:57,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:08:57,118 INFO L225 Difference]: With dead ends: 433 [2022-11-20 12:08:57,118 INFO L226 Difference]: Without dead ends: 433 [2022-11-20 12:08:57,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=122, Invalid=621, Unknown=13, NotChecked=0, Total=756 [2022-11-20 12:08:57,119 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 73 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 296 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:08:57,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 819 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 296 Unchecked, 0.2s Time] [2022-11-20 12:08:57,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-11-20 12:08:57,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 409. [2022-11-20 12:08:57,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 363 states have (on average 1.2286501377410468) internal successors, (446), 392 states have internal predecessors, (446), 6 states have call successors, (6), 3 states have call predecessors, (6), 8 states have return successors, (17), 13 states have call predecessors, (17), 6 states have call successors, (17) [2022-11-20 12:08:57,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 469 transitions. [2022-11-20 12:08:57,124 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 469 transitions. Word has length 61 [2022-11-20 12:08:57,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:08:57,124 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 469 transitions. [2022-11-20 12:08:57,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.555555555555555) internal successors, (100), 19 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:08:57,124 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 469 transitions. [2022-11-20 12:08:57,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-20 12:08:57,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:08:57,125 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:08:57,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (71)] Ended with exit code 0 [2022-11-20 12:08:57,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (72)] Forceful destruction successful, exit code 0 [2022-11-20 12:08:57,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 12:08:57,527 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:08:57,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:57,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1179322217, now seen corresponding path program 1 times [2022-11-20 12:08:57,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:08:57,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634398839] [2022-11-20 12:08:57,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:57,528 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 [2022-11-20 12:08:57,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:08:57,529 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:08:57,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (73)] Waiting until timeout for monitored process [2022-11-20 12:08:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:58,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 12:08:58,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:58,385 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 6 treesize of output 5 [2022-11-20 12:08:58,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:08:58,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-20 12:08:58,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:08:58,931 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:08:58,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 50 [2022-11-20 12:08:59,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2022-11-20 12:09:00,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:09:00,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:09:00,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:09:00,475 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-20 12:09:00,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 38 [2022-11-20 12:09:00,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:09:00,525 INFO L321 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2022-11-20 12:09:00,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 20 [2022-11-20 12:09:00,683 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:09:00,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:09:03,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:09:03,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634398839] [2022-11-20 12:09:03,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634398839] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:09:03,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1622904294] [2022-11-20 12:09:03,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:03,355 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:09:03,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:09:03,358 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:09:03,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (74)] Waiting until timeout for monitored process [2022-11-20 12:09:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:05,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:09:05,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:09:05,074 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 6 treesize of output 5 [2022-11-20 12:09:05,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:09:05,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:09:05,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:09:11,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:09:11,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:09:11,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:09:11,177 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-20 12:09:11,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 40 [2022-11-20 12:09:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:09:11,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:09:12,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1622904294] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:09:12,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:09:12,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 18 [2022-11-20 12:09:12,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987563835] [2022-11-20 12:09:12,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:09:12,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 12:09:12,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:09:12,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 12:09:12,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=394, Unknown=10, NotChecked=0, Total=462 [2022-11-20 12:09:12,953 INFO L87 Difference]: Start difference. First operand 409 states and 469 transitions. Second operand has 19 states, 18 states have (on average 5.722222222222222) internal successors, (103), 19 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:09:22,032 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_8530 (_ BitVec 32)) (v_ArrVal_8531 (_ BitVec 32)) (v_arrayElimCell_209 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (bvult v_arrayElimCell_209 |c_#StackHeapBarrier|) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_8530) v_arrayElimCell_209 v_ArrVal_8531) |c_#length|) (= (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) v_arrayElimCell_209) (_ bv0 1)))) (exists ((v_ArrVal_8741 (_ BitVec 32)) (v_ArrVal_8742 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (bvult create_data_~data~0.base |c_#StackHeapBarrier|) (bvult |create_data_#t~malloc7.base| |c_#StackHeapBarrier|) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_8741) |create_data_#t~malloc7.base| v_ArrVal_8742) |c_#length|))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32)))) is different from true [2022-11-20 12:09:24,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:09:24,965 INFO L93 Difference]: Finished difference Result 462 states and 525 transitions. [2022-11-20 12:09:24,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 12:09:24,966 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.722222222222222) internal successors, (103), 19 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2022-11-20 12:09:24,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:09:24,967 INFO L225 Difference]: With dead ends: 462 [2022-11-20 12:09:24,967 INFO L226 Difference]: Without dead ends: 462 [2022-11-20 12:09:24,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=150, Invalid=956, Unknown=20, NotChecked=64, Total=1190 [2022-11-20 12:09:24,968 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 241 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 716 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:09:24,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 1118 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 515 Invalid, 0 Unknown, 716 Unchecked, 1.6s Time] [2022-11-20 12:09:24,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-11-20 12:09:24,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 397. [2022-11-20 12:09:24,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 352 states have (on average 1.2329545454545454) internal successors, (434), 380 states have internal predecessors, (434), 6 states have call successors, (6), 3 states have call predecessors, (6), 7 states have return successors, (16), 13 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-20 12:09:24,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 456 transitions. [2022-11-20 12:09:24,975 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 456 transitions. Word has length 61 [2022-11-20 12:09:24,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:09:24,976 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 456 transitions. [2022-11-20 12:09:24,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.722222222222222) internal successors, (103), 19 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:09:24,976 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 456 transitions. [2022-11-20 12:09:24,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-20 12:09:24,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:09:24,977 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:24,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (74)] Forceful destruction successful, exit code 0 [2022-11-20 12:09:25,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (73)] Ended with exit code 0 [2022-11-20 12:09:25,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:09:25,391 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:09:25,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:25,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1611932791, now seen corresponding path program 1 times [2022-11-20 12:09:25,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:09:25,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446460485] [2022-11-20 12:09:25,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:25,392 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 [2022-11-20 12:09:25,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:09:25,393 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:09:25,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (75)] Waiting until timeout for monitored process [2022-11-20 12:09:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:26,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-20 12:09:26,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:09:26,153 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 6 treesize of output 5 [2022-11-20 12:09:26,162 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 6 treesize of output 7 [2022-11-20 12:09:26,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:09:26,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 12:09:26,447 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_217 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_8869 (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_8869) v_arrayElimCell_217 (_ bv80 32))))) is different from true [2022-11-20 12:09:26,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:09:26,759 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-20 12:09:26,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-20 12:09:26,783 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:09:26,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:09:26,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:09:26,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:09:27,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-11-20 12:09:27,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:09:27,314 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-20 12:09:27,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:09:27,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2022-11-20 12:09:27,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:09:27,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:09:27,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:09:27,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:09:43,541 WARN L233 SmtUtils]: Spent 14.17s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:09:43,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:09:43,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446460485] [2022-11-20 12:09:43,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446460485] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:09:43,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [667979922] [2022-11-20 12:09:43,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:43,542 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:09:43,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:09:43,543 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:09:43,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (76)] Waiting until timeout for monitored process [2022-11-20 12:09:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:45,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 12:09:45,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:09:45,125 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 6 treesize of output 5 [2022-11-20 12:09:45,134 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 6 treesize of output 7 [2022-11-20 12:09:45,365 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_9001 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_9001) |create_data_#t~malloc7.base| (_ bv80 32)) |c_#length|)))) is different from true [2022-11-20 12:09:45,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:09:45,693 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-20 12:09:45,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-20 12:09:45,716 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:09:45,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:09:45,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:09:45,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:09:46,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-11-20 12:09:46,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:09:46,484 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:09:46,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:09:46,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [667979922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:46,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:09:46,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 15 [2022-11-20 12:09:46,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777437841] [2022-11-20 12:09:46,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:46,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:09:46,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:09:46,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:09:46,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=256, Unknown=2, NotChecked=66, Total=380 [2022-11-20 12:09:46,486 INFO L87 Difference]: Start difference. First operand 397 states and 456 transitions. Second operand has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:09:47,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:09:47,039 INFO L93 Difference]: Finished difference Result 492 states and 578 transitions. [2022-11-20 12:09:47,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:09:47,039 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2022-11-20 12:09:47,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:09:47,042 INFO L225 Difference]: With dead ends: 492 [2022-11-20 12:09:47,042 INFO L226 Difference]: Without dead ends: 492 [2022-11-20 12:09:47,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=56, Invalid=256, Unknown=2, NotChecked=66, Total=380 [2022-11-20 12:09:47,043 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 46 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 482 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:09:47,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 541 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 482 Unchecked, 0.5s Time] [2022-11-20 12:09:47,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-11-20 12:09:47,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 465. [2022-11-20 12:09:47,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 416 states have (on average 1.2331730769230769) internal successors, (513), 445 states have internal predecessors, (513), 8 states have call successors, (8), 3 states have call predecessors, (8), 9 states have return successors, (28), 16 states have call predecessors, (28), 8 states have call successors, (28) [2022-11-20 12:09:47,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 549 transitions. [2022-11-20 12:09:47,051 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 549 transitions. Word has length 61 [2022-11-20 12:09:47,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:09:47,051 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 549 transitions. [2022-11-20 12:09:47,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:09:47,052 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 549 transitions. [2022-11-20 12:09:47,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-20 12:09:47,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:09:47,053 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:47,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (75)] Forceful destruction successful, exit code 0 [2022-11-20 12:09:47,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (76)] Ended with exit code 0 [2022-11-20 12:09:47,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 12:09:47,469 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:09:47,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:47,470 INFO L85 PathProgramCache]: Analyzing trace with hash 939726753, now seen corresponding path program 1 times [2022-11-20 12:09:47,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:09:47,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861841649] [2022-11-20 12:09:47,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:47,471 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 [2022-11-20 12:09:47,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:09:47,471 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:09:47,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (77)] Waiting until timeout for monitored process [2022-11-20 12:09:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:48,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:09:48,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:09:48,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:09:48,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 12:09:48,272 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:09:48,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:09:48,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:09:48,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861841649] [2022-11-20 12:09:48,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861841649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:48,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:09:48,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:09:48,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428319991] [2022-11-20 12:09:48,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:48,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:09:48,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:09:48,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:09:48,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:09:48,275 INFO L87 Difference]: Start difference. First operand 465 states and 549 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:09:49,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:09:49,117 INFO L93 Difference]: Finished difference Result 480 states and 563 transitions. [2022-11-20 12:09:49,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:09:49,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2022-11-20 12:09:49,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:09:49,119 INFO L225 Difference]: With dead ends: 480 [2022-11-20 12:09:49,119 INFO L226 Difference]: Without dead ends: 480 [2022-11-20 12:09:49,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:09:49,119 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 131 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:09:49,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 335 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 12:09:49,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-11-20 12:09:49,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 468. [2022-11-20 12:09:49,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 419 states have (on average 1.233890214797136) internal successors, (517), 448 states have internal predecessors, (517), 8 states have call successors, (8), 3 states have call predecessors, (8), 9 states have return successors, (28), 16 states have call predecessors, (28), 8 states have call successors, (28) [2022-11-20 12:09:49,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 553 transitions. [2022-11-20 12:09:49,127 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 553 transitions. Word has length 64 [2022-11-20 12:09:49,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:09:49,128 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 553 transitions. [2022-11-20 12:09:49,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:09:49,128 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 553 transitions. [2022-11-20 12:09:49,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-20 12:09:49,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:09:49,129 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:49,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (77)] Forceful destruction successful, exit code 0 [2022-11-20 12:09:49,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:09:49,344 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:09:49,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:49,344 INFO L85 PathProgramCache]: Analyzing trace with hash 939726754, now seen corresponding path program 1 times [2022-11-20 12:09:49,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:09:49,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759530794] [2022-11-20 12:09:49,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:49,345 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 [2022-11-20 12:09:49,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:09:49,346 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:09:49,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (78)] Waiting until timeout for monitored process [2022-11-20 12:09:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:49,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:09:49,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:09:50,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:09:50,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:09:50,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-20 12:09:50,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:09:50,326 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:09:50,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:09:50,326 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:09:50,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759530794] [2022-11-20 12:09:50,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759530794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:50,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:09:50,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:09:50,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866259201] [2022-11-20 12:09:50,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:50,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:09:50,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:09:50,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:09:50,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:09:50,328 INFO L87 Difference]: Start difference. First operand 468 states and 553 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:09:51,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:09:51,106 INFO L93 Difference]: Finished difference Result 496 states and 579 transitions. [2022-11-20 12:09:51,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:09:51,107 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2022-11-20 12:09:51,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:09:51,109 INFO L225 Difference]: With dead ends: 496 [2022-11-20 12:09:51,109 INFO L226 Difference]: Without dead ends: 496 [2022-11-20 12:09:51,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:09:51,110 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 259 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:09:51,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 302 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:09:51,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-11-20 12:09:51,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 468. [2022-11-20 12:09:51,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 419 states have (on average 1.2315035799522673) internal successors, (516), 448 states have internal predecessors, (516), 8 states have call successors, (8), 3 states have call predecessors, (8), 9 states have return successors, (28), 16 states have call predecessors, (28), 8 states have call successors, (28) [2022-11-20 12:09:51,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 552 transitions. [2022-11-20 12:09:51,118 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 552 transitions. Word has length 64 [2022-11-20 12:09:51,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:09:51,119 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 552 transitions. [2022-11-20 12:09:51,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:09:51,119 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 552 transitions. [2022-11-20 12:09:51,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 12:09:51,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:09:51,120 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:51,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (78)] Forceful destruction successful, exit code 0 [2022-11-20 12:09:51,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:09:51,335 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:09:51,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:51,335 INFO L85 PathProgramCache]: Analyzing trace with hash 504851823, now seen corresponding path program 1 times [2022-11-20 12:09:51,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:09:51,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682655623] [2022-11-20 12:09:51,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:51,336 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 [2022-11-20 12:09:51,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:09:51,337 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:09:51,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (79)] Waiting until timeout for monitored process [2022-11-20 12:09:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:52,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-20 12:09:52,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:09:52,096 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 6 treesize of output 5 [2022-11-20 12:09:52,105 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 6 treesize of output 7 [2022-11-20 12:09:52,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:09:52,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-20 12:09:52,398 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9358 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_arrayElimCell_232 (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_9358) v_arrayElimCell_232 (_ bv80 32)) |c_#length|))) is different from true [2022-11-20 12:09:52,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:09:52,764 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-20 12:09:52,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-20 12:09:52,789 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:09:52,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:09:52,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:09:52,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:09:53,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-11-20 12:09:53,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:09:53,334 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-20 12:09:53,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:09:53,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2022-11-20 12:09:53,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:09:53,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:09:53,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:09:53,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:10:08,329 WARN L233 SmtUtils]: Spent 14.17s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:10:08,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:10:08,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682655623] [2022-11-20 12:10:08,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682655623] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:08,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [454348068] [2022-11-20 12:10:08,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:08,330 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:10:08,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:10:08,331 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:10:08,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (80)] Waiting until timeout for monitored process [2022-11-20 12:10:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:09,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 12:10:09,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:09,991 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 6 treesize of output 5 [2022-11-20 12:10:10,011 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 6 treesize of output 7 [2022-11-20 12:10:10,231 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (exists ((v_ArrVal_9490 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_9490) |create_data_#t~malloc7.base| (_ bv80 32)) |c_#length|)) (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)))) is different from true [2022-11-20 12:10:10,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:10:10,611 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-20 12:10:10,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-20 12:10:10,638 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:10:10,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:10:10,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:10:10,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:10:11,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-11-20 12:10:11,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:10:11,413 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:10:11,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:10:11,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [454348068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:11,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:10:11,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 15 [2022-11-20 12:10:11,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934597676] [2022-11-20 12:10:11,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:11,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:10:11,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:10:11,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:10:11,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=256, Unknown=2, NotChecked=66, Total=380 [2022-11-20 12:10:11,415 INFO L87 Difference]: Start difference. First operand 468 states and 552 transitions. Second operand has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:10:12,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:12,156 INFO L93 Difference]: Finished difference Result 583 states and 693 transitions. [2022-11-20 12:10:12,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:10:12,157 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2022-11-20 12:10:12,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:12,158 INFO L225 Difference]: With dead ends: 583 [2022-11-20 12:10:12,158 INFO L226 Difference]: Without dead ends: 583 [2022-11-20 12:10:12,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=61, Invalid=287, Unknown=2, NotChecked=70, Total=420 [2022-11-20 12:10:12,159 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 125 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 484 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:12,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 564 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 204 Invalid, 0 Unknown, 484 Unchecked, 0.7s Time] [2022-11-20 12:10:12,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-11-20 12:10:12,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 522. [2022-11-20 12:10:12,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 471 states have (on average 1.237791932059448) internal successors, (583), 498 states have internal predecessors, (583), 8 states have call successors, (8), 3 states have call predecessors, (8), 11 states have return successors, (34), 20 states have call predecessors, (34), 8 states have call successors, (34) [2022-11-20 12:10:12,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 625 transitions. [2022-11-20 12:10:12,169 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 625 transitions. Word has length 65 [2022-11-20 12:10:12,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:12,169 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 625 transitions. [2022-11-20 12:10:12,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:10:12,170 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 625 transitions. [2022-11-20 12:10:12,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 12:10:12,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:12,171 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:12,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (79)] Ended with exit code 0 [2022-11-20 12:10:12,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (80)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:12,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 12:10:12,577 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:10:12,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:12,577 INFO L85 PathProgramCache]: Analyzing trace with hash -665539789, now seen corresponding path program 1 times [2022-11-20 12:10:12,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:10:12,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227320217] [2022-11-20 12:10:12,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:12,578 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 [2022-11-20 12:10:12,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:10:12,579 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:10:12,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (81)] Waiting until timeout for monitored process [2022-11-20 12:10:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:13,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 12:10:13,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:13,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:10:13,548 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-20 12:10:13,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2022-11-20 12:10:13,651 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-20 12:10:13,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-11-20 12:10:13,762 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 12:10:13,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 14 [2022-11-20 12:10:13,805 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:10:13,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:10:13,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-11-20 12:10:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:10:14,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:10:14,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227320217] [2022-11-20 12:10:14,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227320217] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:10:14,170 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:10:14,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-11-20 12:10:14,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173879464] [2022-11-20 12:10:14,170 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:10:14,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 12:10:14,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:10:14,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 12:10:14,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:10:14,171 INFO L87 Difference]: Start difference. First operand 522 states and 625 transitions. Second operand has 13 states, 12 states have (on average 5.25) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:10:15,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:15,545 INFO L93 Difference]: Finished difference Result 632 states and 762 transitions. [2022-11-20 12:10:15,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:10:15,546 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.25) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2022-11-20 12:10:15,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:15,549 INFO L225 Difference]: With dead ends: 632 [2022-11-20 12:10:15,549 INFO L226 Difference]: Without dead ends: 632 [2022-11-20 12:10:15,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:10:15,550 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 249 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 161 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:15,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 704 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 396 Invalid, 0 Unknown, 161 Unchecked, 1.2s Time] [2022-11-20 12:10:15,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-11-20 12:10:15,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 567. [2022-11-20 12:10:15,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 516 states have (on average 1.248062015503876) internal successors, (644), 543 states have internal predecessors, (644), 8 states have call successors, (8), 3 states have call predecessors, (8), 11 states have return successors, (34), 20 states have call predecessors, (34), 8 states have call successors, (34) [2022-11-20 12:10:15,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 686 transitions. [2022-11-20 12:10:15,559 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 686 transitions. Word has length 65 [2022-11-20 12:10:15,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:15,559 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 686 transitions. [2022-11-20 12:10:15,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.25) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:10:15,559 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 686 transitions. [2022-11-20 12:10:15,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 12:10:15,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:15,560 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:15,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (81)] Ended with exit code 0 [2022-11-20 12:10:15,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:10:15,774 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:10:15,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:15,775 INFO L85 PathProgramCache]: Analyzing trace with hash -665539788, now seen corresponding path program 1 times [2022-11-20 12:10:15,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:10:15,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761341702] [2022-11-20 12:10:15,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:15,776 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 [2022-11-20 12:10:15,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:10:15,777 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:10:15,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (82)] Waiting until timeout for monitored process [2022-11-20 12:10:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:16,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 12:10:16,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:16,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:10:16,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:10:16,968 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-20 12:10:16,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 32 [2022-11-20 12:10:17,001 INFO L321 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-20 12:10:17,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2022-11-20 12:10:17,189 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-20 12:10:17,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 31 [2022-11-20 12:10:17,229 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-20 12:10:17,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 32 [2022-11-20 12:10:17,435 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 12:10:17,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 22 [2022-11-20 12:10:17,444 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 12:10:17,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 17 [2022-11-20 12:10:17,491 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:10:17,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:10:18,392 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:10:18,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 82 [2022-11-20 12:10:19,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2022-11-20 12:10:19,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2022-11-20 12:10:19,559 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:10:19,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 60 [2022-11-20 12:10:19,815 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:10:19,815 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:10:19,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761341702] [2022-11-20 12:10:19,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761341702] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:10:19,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:10:19,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-20 12:10:19,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081569388] [2022-11-20 12:10:19,816 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:10:19,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:10:19,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:10:19,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:10:19,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:10:19,817 INFO L87 Difference]: Start difference. First operand 567 states and 686 transitions. Second operand has 20 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 20 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:10:22,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:22,787 INFO L93 Difference]: Finished difference Result 671 states and 794 transitions. [2022-11-20 12:10:22,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:10:22,788 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 20 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 65 [2022-11-20 12:10:22,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:22,790 INFO L225 Difference]: With dead ends: 671 [2022-11-20 12:10:22,790 INFO L226 Difference]: Without dead ends: 671 [2022-11-20 12:10:22,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2022-11-20 12:10:22,791 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 331 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 497 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:22,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 1087 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 417 Invalid, 0 Unknown, 497 Unchecked, 2.0s Time] [2022-11-20 12:10:22,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-11-20 12:10:22,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 569. [2022-11-20 12:10:22,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 518 states have (on average 1.247104247104247) internal successors, (646), 545 states have internal predecessors, (646), 8 states have call successors, (8), 3 states have call predecessors, (8), 11 states have return successors, (34), 20 states have call predecessors, (34), 8 states have call successors, (34) [2022-11-20 12:10:22,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 688 transitions. [2022-11-20 12:10:22,799 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 688 transitions. Word has length 65 [2022-11-20 12:10:22,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:22,799 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 688 transitions. [2022-11-20 12:10:22,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 20 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:10:22,800 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 688 transitions. [2022-11-20 12:10:22,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 12:10:22,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:22,801 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:22,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (82)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:23,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:10:23,016 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:10:23,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:23,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1286364406, now seen corresponding path program 1 times [2022-11-20 12:10:23,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:10:23,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060118489] [2022-11-20 12:10:23,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:23,017 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 [2022-11-20 12:10:23,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:10:23,018 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:10:23,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (83)] Waiting until timeout for monitored process [2022-11-20 12:10:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:24,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 12:10:24,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:24,131 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 6 treesize of output 7 [2022-11-20 12:10:24,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:10:24,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:10:24,409 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:10:24,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 26 [2022-11-20 12:10:24,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:10:24,617 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:10:24,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2022-11-20 12:10:24,664 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:10:24,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:10:24,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:10:24,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060118489] [2022-11-20 12:10:24,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060118489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:24,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:24,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:10:24,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433148510] [2022-11-20 12:10:24,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:24,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:10:24,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:10:24,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:10:24,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:10:24,665 INFO L87 Difference]: Start difference. First operand 569 states and 688 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:10:26,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:26,854 INFO L93 Difference]: Finished difference Result 660 states and 780 transitions. [2022-11-20 12:10:26,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:10:26,855 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2022-11-20 12:10:26,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:26,858 INFO L225 Difference]: With dead ends: 660 [2022-11-20 12:10:26,859 INFO L226 Difference]: Without dead ends: 660 [2022-11-20 12:10:26,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:10:26,859 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 307 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:26,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 873 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 741 Invalid, 0 Unknown, 127 Unchecked, 1.9s Time] [2022-11-20 12:10:26,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-11-20 12:10:26,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 572. [2022-11-20 12:10:26,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 521 states have (on average 1.2476007677543186) internal successors, (650), 548 states have internal predecessors, (650), 8 states have call successors, (8), 3 states have call predecessors, (8), 11 states have return successors, (34), 20 states have call predecessors, (34), 8 states have call successors, (34) [2022-11-20 12:10:26,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 692 transitions. [2022-11-20 12:10:26,870 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 692 transitions. Word has length 65 [2022-11-20 12:10:26,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:26,870 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 692 transitions. [2022-11-20 12:10:26,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:10:26,871 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 692 transitions. [2022-11-20 12:10:26,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 12:10:26,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:26,872 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:26,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (83)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:27,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:10:27,090 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:10:27,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:27,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1286364405, now seen corresponding path program 1 times [2022-11-20 12:10:27,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:10:27,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935169369] [2022-11-20 12:10:27,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:27,091 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 [2022-11-20 12:10:27,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:10:27,092 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:10:27,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (84)] Waiting until timeout for monitored process [2022-11-20 12:10:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:28,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-20 12:10:28,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:28,135 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 6 treesize of output 7 [2022-11-20 12:10:28,167 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:10:28,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:10:28,305 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 6 treesize of output 5 [2022-11-20 12:10:28,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:10:28,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:10:28,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:10:28,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:10:28,953 INFO L321 Elim1Store]: treesize reduction 29, result has 9.4 percent of original size [2022-11-20 12:10:28,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 37 [2022-11-20 12:10:28,966 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 12:10:28,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-20 12:10:29,012 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:10:29,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:10:29,012 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:10:29,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935169369] [2022-11-20 12:10:29,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935169369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:29,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:29,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:10:29,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653447417] [2022-11-20 12:10:29,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:29,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:10:29,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:10:29,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:10:29,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:10:29,014 INFO L87 Difference]: Start difference. First operand 572 states and 692 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:10:32,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:32,451 INFO L93 Difference]: Finished difference Result 760 states and 894 transitions. [2022-11-20 12:10:32,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 12:10:32,452 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2022-11-20 12:10:32,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:32,454 INFO L225 Difference]: With dead ends: 760 [2022-11-20 12:10:32,455 INFO L226 Difference]: Without dead ends: 760 [2022-11-20 12:10:32,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:10:32,455 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 288 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:32,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 1012 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 938 Invalid, 0 Unknown, 138 Unchecked, 2.8s Time] [2022-11-20 12:10:32,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-11-20 12:10:32,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 566. [2022-11-20 12:10:32,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 515 states have (on average 1.2485436893203883) internal successors, (643), 540 states have internal predecessors, (643), 8 states have call successors, (8), 3 states have call predecessors, (8), 11 states have return successors, (34), 22 states have call predecessors, (34), 8 states have call successors, (34) [2022-11-20 12:10:32,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 685 transitions. [2022-11-20 12:10:32,467 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 685 transitions. Word has length 65 [2022-11-20 12:10:32,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:32,467 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 685 transitions. [2022-11-20 12:10:32,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:10:32,468 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 685 transitions. [2022-11-20 12:10:32,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 12:10:32,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:32,469 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:32,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (84)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:32,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:10:32,685 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:10:32,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:32,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1134284034, now seen corresponding path program 1 times [2022-11-20 12:10:32,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:10:32,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610930867] [2022-11-20 12:10:32,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:32,686 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 [2022-11-20 12:10:32,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:10:32,687 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:10:32,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (85)] Waiting until timeout for monitored process [2022-11-20 12:10:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:33,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:10:33,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:33,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2022-11-20 12:10:33,507 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:10:33,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-11-20 12:10:33,558 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:10:33,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:10:33,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:10:33,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610930867] [2022-11-20 12:10:33,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610930867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:33,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:33,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:10:33,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941812469] [2022-11-20 12:10:33,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:33,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:10:33,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:10:33,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:10:33,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:10:33,560 INFO L87 Difference]: Start difference. First operand 566 states and 685 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:10:34,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:34,780 INFO L93 Difference]: Finished difference Result 587 states and 706 transitions. [2022-11-20 12:10:34,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:10:34,781 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2022-11-20 12:10:34,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:34,783 INFO L225 Difference]: With dead ends: 587 [2022-11-20 12:10:34,783 INFO L226 Difference]: Without dead ends: 587 [2022-11-20 12:10:34,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:10:34,784 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 33 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:34,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 575 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 317 Invalid, 0 Unknown, 76 Unchecked, 1.1s Time] [2022-11-20 12:10:34,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-11-20 12:10:34,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 579. [2022-11-20 12:10:34,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 528 states have (on average 1.246212121212121) internal successors, (658), 553 states have internal predecessors, (658), 8 states have call successors, (8), 3 states have call predecessors, (8), 11 states have return successors, (34), 22 states have call predecessors, (34), 8 states have call successors, (34) [2022-11-20 12:10:34,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 700 transitions. [2022-11-20 12:10:34,795 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 700 transitions. Word has length 66 [2022-11-20 12:10:34,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:34,795 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 700 transitions. [2022-11-20 12:10:34,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:10:34,796 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 700 transitions. [2022-11-20 12:10:34,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 12:10:34,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:34,797 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:34,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (85)] Ended with exit code 0 [2022-11-20 12:10:35,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:10:35,011 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:10:35,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:35,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1134284035, now seen corresponding path program 1 times [2022-11-20 12:10:35,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:10:35,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625921774] [2022-11-20 12:10:35,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:35,012 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 [2022-11-20 12:10:35,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:10:35,014 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:10:35,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (86)] Waiting until timeout for monitored process [2022-11-20 12:10:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:35,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 12:10:35,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:36,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:10:36,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:10:36,289 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-20 12:10:36,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:10:36,946 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:10:36,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 48 [2022-11-20 12:10:36,975 INFO L321 Elim1Store]: treesize reduction 26, result has 10.3 percent of original size [2022-11-20 12:10:36,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 23 [2022-11-20 12:10:37,077 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:10:37,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:10:37,078 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:10:37,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625921774] [2022-11-20 12:10:37,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625921774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:37,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:37,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 12:10:37,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117589255] [2022-11-20 12:10:37,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:37,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:10:37,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:10:37,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:10:37,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:10:37,079 INFO L87 Difference]: Start difference. First operand 579 states and 700 transitions. Second operand has 16 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:10:39,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:39,787 INFO L93 Difference]: Finished difference Result 730 states and 888 transitions. [2022-11-20 12:10:39,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 12:10:39,788 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2022-11-20 12:10:39,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:39,791 INFO L225 Difference]: With dead ends: 730 [2022-11-20 12:10:39,791 INFO L226 Difference]: Without dead ends: 730 [2022-11-20 12:10:39,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2022-11-20 12:10:39,794 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 285 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:39,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 818 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 648 Invalid, 0 Unknown, 100 Unchecked, 1.9s Time] [2022-11-20 12:10:39,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2022-11-20 12:10:39,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 625. [2022-11-20 12:10:39,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 574 states have (on average 1.2560975609756098) internal successors, (721), 599 states have internal predecessors, (721), 8 states have call successors, (8), 3 states have call predecessors, (8), 11 states have return successors, (34), 22 states have call predecessors, (34), 8 states have call successors, (34) [2022-11-20 12:10:39,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 763 transitions. [2022-11-20 12:10:39,808 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 763 transitions. Word has length 66 [2022-11-20 12:10:39,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:39,808 INFO L495 AbstractCegarLoop]: Abstraction has 625 states and 763 transitions. [2022-11-20 12:10:39,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:10:39,808 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 763 transitions. [2022-11-20 12:10:39,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 12:10:39,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:39,809 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:39,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (86)] Ended with exit code 0 [2022-11-20 12:10:40,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:10:40,012 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:10:40,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:40,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1667627082, now seen corresponding path program 2 times [2022-11-20 12:10:40,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:10:40,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377040242] [2022-11-20 12:10:40,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:10:40,013 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 [2022-11-20 12:10:40,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:10:40,014 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:10:40,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (87)] Waiting until timeout for monitored process [2022-11-20 12:10:41,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:10:41,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:10:41,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 12:10:41,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:41,100 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 6 treesize of output 7 [2022-11-20 12:10:50,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:10:50,440 INFO L321 Elim1Store]: treesize reduction 183, result has 20.8 percent of original size [2022-11-20 12:10:50,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 37 treesize of output 70 [2022-11-20 12:10:50,532 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:10:50,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:10:54,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:10:54,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377040242] [2022-11-20 12:10:54,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377040242] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:54,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2094658194] [2022-11-20 12:10:54,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:10:54,803 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:10:54,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:10:54,804 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:10:54,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (88)] Waiting until timeout for monitored process [2022-11-20 12:10:56,313 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:10:56,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774485520] [2022-11-20 12:10:56,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:10:56,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:56,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:56,318 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:10:56,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-11-20 12:10:56,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (88)] Forceful destruction successful, exit code 1 [2022-11-20 12:10:59,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:10:59,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:10:59,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 12:10:59,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:59,086 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 6 treesize of output 7 [2022-11-20 12:11:03,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:11:03,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2022-11-20 12:11:03,621 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_11198 (_ BitVec 1)) (v_ArrVal_11197 (_ BitVec 1)) (v_arrayElimCell_291 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_11198) v_arrayElimCell_291 v_ArrVal_11197) |c_#valid|) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) v_arrayElimCell_291)))) is different from true [2022-11-20 12:11:03,955 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_11198 (_ BitVec 1)) (v_ArrVal_11197 (_ BitVec 1)) (v_ArrVal_11201 (_ BitVec 1)) (v_arrayElimCell_291 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32))) (and (= (store (store (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_11198) v_arrayElimCell_291 v_ArrVal_11197) c_create_data_~nextData~0.base v_ArrVal_11201) |c_#valid|) (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) v_arrayElimCell_291)))) is different from true [2022-11-20 12:11:04,099 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_11198 (_ BitVec 1)) (v_ArrVal_11197 (_ BitVec 1)) (v_create_data_~data~0.base_211 (_ BitVec 32)) (v_ArrVal_11201 (_ BitVec 1)) (v_arrayElimCell_291 (_ BitVec 32))) (and (= |c_#valid| (store (store (store |c_old(#valid)| v_create_data_~data~0.base_211 v_ArrVal_11198) v_arrayElimCell_291 v_ArrVal_11197) c_create_data_~data~0.base v_ArrVal_11201)) (= (_ bv0 1) (select (store |c_old(#valid)| v_create_data_~data~0.base_211 (_ bv1 1)) v_arrayElimCell_291)) (= (select |c_old(#valid)| v_create_data_~data~0.base_211) (_ bv0 1)))) is different from true [2022-11-20 12:11:04,120 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_11198 (_ BitVec 1)) (v_ArrVal_11197 (_ BitVec 1)) (v_create_data_~data~0.base_211 (_ BitVec 32)) (v_ArrVal_11202 (_ BitVec 1)) (v_ArrVal_11201 (_ BitVec 1)) (v_arrayElimCell_291 (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_old(#valid)| v_create_data_~data~0.base_211 (_ bv1 1)) v_arrayElimCell_291)) (= (select |c_old(#valid)| v_create_data_~data~0.base_211) (_ bv0 1)) (= |c_#valid| (store (store (store (store |c_old(#valid)| v_create_data_~data~0.base_211 v_ArrVal_11198) v_arrayElimCell_291 v_ArrVal_11197) c_create_data_~data~0.base v_ArrVal_11201) c_create_data_~nextData~0.base v_ArrVal_11202)))) is different from true [2022-11-20 12:11:41,607 INFO L321 Elim1Store]: treesize reduction 188, result has 22.6 percent of original size [2022-11-20 12:11:41,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 37 treesize of output 77 [2022-11-20 12:11:41,651 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 18 not checked. [2022-11-20 12:11:41,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:11:54,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774485520] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:11:54,019 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:11:54,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2022-11-20 12:11:54,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13555263] [2022-11-20 12:11:54,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:11:54,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 12:11:54,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:11:54,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 12:11:54,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=200, Unknown=28, NotChecked=132, Total=420 [2022-11-20 12:11:54,021 INFO L87 Difference]: Start difference. First operand 625 states and 763 transitions. Second operand has 19 states, 18 states have (on average 5.555555555555555) internal successors, (100), 18 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 12:11:56,263 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_10657 (_ BitVec 1)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (let ((.cse0 (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select .cse0 |create_data_#t~malloc7.base|)) (= |c_#valid| (store .cse0 |create_data_#t~malloc7.base| v_ArrVal_10657))))) (exists ((v_ArrVal_11198 (_ BitVec 1)) (v_ArrVal_11197 (_ BitVec 1)) (v_arrayElimCell_291 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_11198) v_arrayElimCell_291 v_ArrVal_11197) |c_#valid|) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) v_arrayElimCell_291))))) is different from true [2022-11-20 12:11:56,288 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_10657 (_ BitVec 1)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_10659 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (let ((.cse0 (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select .cse0 |create_data_#t~malloc7.base|)) (= |c_#valid| (store (store .cse0 |create_data_#t~malloc7.base| v_ArrVal_10657) c_create_data_~nextData~0.base v_ArrVal_10659))))) (exists ((v_ArrVal_11198 (_ BitVec 1)) (v_ArrVal_11197 (_ BitVec 1)) (v_ArrVal_11201 (_ BitVec 1)) (v_arrayElimCell_291 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32))) (and (= (store (store (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_11198) v_arrayElimCell_291 v_ArrVal_11197) c_create_data_~nextData~0.base v_ArrVal_11201) |c_#valid|) (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) v_arrayElimCell_291))))) is different from true [2022-11-20 12:11:56,352 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_11198 (_ BitVec 1)) (v_ArrVal_11197 (_ BitVec 1)) (v_create_data_~data~0.base_211 (_ BitVec 32)) (v_ArrVal_11201 (_ BitVec 1)) (v_arrayElimCell_291 (_ BitVec 32))) (and (= |c_#valid| (store (store (store |c_old(#valid)| v_create_data_~data~0.base_211 v_ArrVal_11198) v_arrayElimCell_291 v_ArrVal_11197) c_create_data_~data~0.base v_ArrVal_11201)) (= (_ bv0 1) (select (store |c_old(#valid)| v_create_data_~data~0.base_211 (_ bv1 1)) v_arrayElimCell_291)) (= (select |c_old(#valid)| v_create_data_~data~0.base_211) (_ bv0 1)))) (exists ((v_create_data_~data~0.base_201 (_ BitVec 32)) (v_ArrVal_10657 (_ BitVec 1)) (v_ArrVal_10659 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (let ((.cse0 (store |c_old(#valid)| v_create_data_~data~0.base_201 (_ bv1 1)))) (and (= (select .cse0 |create_data_#t~malloc7.base|) (_ bv0 1)) (= (store (store .cse0 |create_data_#t~malloc7.base| v_ArrVal_10657) c_create_data_~data~0.base v_ArrVal_10659) |c_#valid|) (= (_ bv0 1) (select |c_old(#valid)| v_create_data_~data~0.base_201)))))) is different from true [2022-11-20 12:11:56,361 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_11198 (_ BitVec 1)) (v_ArrVal_11197 (_ BitVec 1)) (v_create_data_~data~0.base_211 (_ BitVec 32)) (v_ArrVal_11202 (_ BitVec 1)) (v_ArrVal_11201 (_ BitVec 1)) (v_arrayElimCell_291 (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_old(#valid)| v_create_data_~data~0.base_211 (_ bv1 1)) v_arrayElimCell_291)) (= (select |c_old(#valid)| v_create_data_~data~0.base_211) (_ bv0 1)) (= |c_#valid| (store (store (store (store |c_old(#valid)| v_create_data_~data~0.base_211 v_ArrVal_11198) v_arrayElimCell_291 v_ArrVal_11197) c_create_data_~data~0.base v_ArrVal_11201) c_create_data_~nextData~0.base v_ArrVal_11202)))) (exists ((v_create_data_~data~0.base_201 (_ BitVec 32)) (v_ArrVal_10657 (_ BitVec 1)) (create_data_~nextData~0.base (_ BitVec 32)) (v_ArrVal_10659 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (let ((.cse0 (store |c_old(#valid)| v_create_data_~data~0.base_201 (_ bv1 1)))) (and (= |c_#valid| (store (store (store .cse0 |create_data_#t~malloc7.base| v_ArrVal_10657) c_create_data_~data~0.base v_ArrVal_10659) create_data_~nextData~0.base (_ bv1 1))) (= (select .cse0 |create_data_#t~malloc7.base|) (_ bv0 1)) (= (_ bv0 1) (select |c_old(#valid)| v_create_data_~data~0.base_201)))))) is different from true [2022-11-20 12:12:10,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:10,257 INFO L93 Difference]: Finished difference Result 713 states and 870 transitions. [2022-11-20 12:12:10,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:12:10,258 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.555555555555555) internal successors, (100), 18 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 66 [2022-11-20 12:12:10,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:10,261 INFO L225 Difference]: With dead ends: 713 [2022-11-20 12:12:10,261 INFO L226 Difference]: Without dead ends: 713 [2022-11-20 12:12:10,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 81.9s TimeCoverageRelationStatistics Valid=94, Invalid=281, Unknown=37, NotChecked=344, Total=756 [2022-11-20 12:12:10,262 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 65 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 949 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:10,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 626 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 117 Invalid, 0 Unknown, 949 Unchecked, 0.3s Time] [2022-11-20 12:12:10,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2022-11-20 12:12:10,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 664. [2022-11-20 12:12:10,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 612 states have (on average 1.25) internal successors, (765), 635 states have internal predecessors, (765), 8 states have call successors, (8), 3 states have call predecessors, (8), 12 states have return successors, (40), 25 states have call predecessors, (40), 8 states have call successors, (40) [2022-11-20 12:12:10,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 813 transitions. [2022-11-20 12:12:10,274 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 813 transitions. Word has length 66 [2022-11-20 12:12:10,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:10,275 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 813 transitions. [2022-11-20 12:12:10,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.555555555555555) internal successors, (100), 18 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 12:12:10,275 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 813 transitions. [2022-11-20 12:12:10,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 12:12:10,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:10,276 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:10,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (87)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:10,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:10,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:12:10,709 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:12:10,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:10,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1667627081, now seen corresponding path program 2 times [2022-11-20 12:12:10,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:10,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331877227] [2022-11-20 12:12:10,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:12:10,711 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 [2022-11-20 12:12:10,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:10,712 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:12:10,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (90)] Waiting until timeout for monitored process [2022-11-20 12:12:12,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:12:12,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:12:12,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 12:12:12,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:12,194 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 6 treesize of output 7 [2022-11-20 12:12:12,203 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 6 treesize of output 5 [2022-11-20 12:12:12,349 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_11482 (_ BitVec 1))) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_11482) |c_create_data_#t~malloc7.base|))) (exists ((v_ArrVal_11483 (_ BitVec 32)) (v_ArrVal_11484 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_11484) |c_create_data_#t~malloc7.base| v_ArrVal_11483) |c_#length|)))) is different from true [2022-11-20 12:12:12,374 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_11482 (_ BitVec 1)) (v_ArrVal_11483 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_11484 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_11482) |create_data_#t~malloc7.base|) (_ bv0 1)) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_11484) |create_data_#t~malloc7.base| v_ArrVal_11483)))) is different from true [2022-11-20 12:12:12,918 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_11482 (_ BitVec 1)) (v_ArrVal_11483 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_11484 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_11482) |create_data_#t~malloc7.base|) (_ bv0 1)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_11484) |create_data_#t~malloc7.base| v_ArrVal_11483) c_create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) is different from true [2022-11-20 12:12:13,130 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_11482 (_ BitVec 1)) (v_ArrVal_11483 (_ BitVec 32)) (v_create_data_~data~0.base_219 (_ BitVec 32)) (v_ArrVal_11484 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= |c_#length| (store (store (store |c_old(#length)| v_create_data_~data~0.base_219 v_ArrVal_11484) |create_data_#t~malloc7.base| v_ArrVal_11483) create_data_~data~0.base (_ bv16 32))) (= (_ bv0 1) (select (store |c_old(#valid)| v_create_data_~data~0.base_219 v_ArrVal_11482) |create_data_#t~malloc7.base|)) (= (select |c_old(#valid)| v_create_data_~data~0.base_219) (_ bv0 1)))) is different from true [2022-11-20 12:12:13,156 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_11482 (_ BitVec 1)) (v_ArrVal_11483 (_ BitVec 32)) (v_create_data_~data~0.base_219 (_ BitVec 32)) (v_ArrVal_11484 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_old(#valid)| v_create_data_~data~0.base_219 v_ArrVal_11482) |create_data_#t~malloc7.base|)) (= (store (store (store (store |c_old(#length)| v_create_data_~data~0.base_219 v_ArrVal_11484) |create_data_#t~malloc7.base| v_ArrVal_11483) create_data_~data~0.base (_ bv16 32)) create_data_~nextData~0.base (_ bv16 32)) |c_#length|) (= (select |c_old(#valid)| v_create_data_~data~0.base_219) (_ bv0 1)))) is different from true [2022-11-20 12:12:13,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:12:13,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:12:13,666 INFO L321 Elim1Store]: treesize reduction 99, result has 31.3 percent of original size [2022-11-20 12:12:13,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 53 [2022-11-20 12:12:13,750 INFO L321 Elim1Store]: treesize reduction 17, result has 45.2 percent of original size [2022-11-20 12:12:13,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 38 [2022-11-20 12:12:13,921 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 13 not checked. [2022-11-20 12:12:13,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:12:20,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:12:20,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331877227] [2022-11-20 12:12:20,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331877227] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:12:20,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [523549369] [2022-11-20 12:12:20,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:12:20,383 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:12:20,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:12:20,384 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:12:20,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (91)] Waiting until timeout for monitored process [2022-11-20 12:12:21,950 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:12:21,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684571615] [2022-11-20 12:12:21,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:12:21,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:12:21,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:12:21,955 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:12:21,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-11-20 12:12:21,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (91)] Forceful destruction successful, exit code 1 [2022-11-20 12:12:24,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:12:24,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:12:24,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 12:12:24,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:24,209 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 6 treesize of output 7 [2022-11-20 12:12:24,215 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 6 treesize of output 5 [2022-11-20 12:12:26,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:12:26,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2022-11-20 12:12:26,510 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_299 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_12028 (_ BitVec 32)) (v_ArrVal_12027 (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) v_arrayElimCell_299) (_ bv0 1)) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_12028) v_arrayElimCell_299 v_ArrVal_12027)))) is different from true [2022-11-20 12:12:26,956 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 6 treesize of output 7 [2022-11-20 12:12:27,383 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:12:27,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 12:12:27,425 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_299 (_ BitVec 32)) (v_create_data_~data~0.base_229 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_12028 (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (v_ArrVal_12027 (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| v_create_data_~data~0.base_229)) (= (store (store (store (store |c_old(#length)| v_create_data_~data~0.base_229 v_ArrVal_12028) v_arrayElimCell_299 v_ArrVal_12027) create_data_~data~0.base (_ bv16 32)) create_data_~nextData~0.base (_ bv16 32)) |c_#length|) (= (select (store |c_old(#valid)| v_create_data_~data~0.base_229 (_ bv1 1)) v_arrayElimCell_299) (_ bv0 1)) (not (= create_data_~nextData~0.base create_data_~data~0.base)))) is different from true [2022-11-20 12:12:27,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:12:27,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:12:27,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:12:28,138 INFO L321 Elim1Store]: treesize reduction 69, result has 34.9 percent of original size [2022-11-20 12:12:28,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 50 [2022-11-20 12:12:28,205 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-20 12:12:28,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-11-20 12:12:28,448 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 18 not checked. [2022-11-20 12:12:28,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:12:28,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-20 12:12:37,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684571615] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:12:37,754 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:12:37,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 17 [2022-11-20 12:12:37,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18816599] [2022-11-20 12:12:37,755 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:12:37,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:12:37,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:12:37,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:12:37,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=151, Unknown=10, NotChecked=210, Total=420 [2022-11-20 12:12:37,756 INFO L87 Difference]: Start difference. First operand 664 states and 813 transitions. Second operand has 18 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 16 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 12:12:37,901 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_299 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_12028 (_ BitVec 32)) (v_ArrVal_12027 (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) v_arrayElimCell_299) (_ bv0 1)) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_12028) v_arrayElimCell_299 v_ArrVal_12027)))) (exists ((v_ArrVal_11482 (_ BitVec 1)) (v_ArrVal_11483 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_11484 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_11482) |create_data_#t~malloc7.base|) (_ bv0 1)) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_11484) |create_data_#t~malloc7.base| v_ArrVal_11483))))) is different from true [2022-11-20 12:12:38,152 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_299 (_ BitVec 32)) (v_create_data_~data~0.base_229 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_12028 (_ BitVec 32)) (v_ArrVal_12027 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |c_#valid| create_data_~data~0.base) (_ bv1 1))) (= (store (store (store |c_old(#length)| v_create_data_~data~0.base_229 v_ArrVal_12028) v_arrayElimCell_299 v_ArrVal_12027) create_data_~data~0.base (_ bv16 32)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| v_create_data_~data~0.base_229)) (= (select (store |c_old(#valid)| v_create_data_~data~0.base_229 (_ bv1 1)) v_arrayElimCell_299) (_ bv0 1)))) (exists ((v_ArrVal_11482 (_ BitVec 1)) (v_ArrVal_11483 (_ BitVec 32)) (v_create_data_~data~0.base_219 (_ BitVec 32)) (v_ArrVal_11484 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= |c_#length| (store (store (store |c_old(#length)| v_create_data_~data~0.base_219 v_ArrVal_11484) |create_data_#t~malloc7.base| v_ArrVal_11483) create_data_~data~0.base (_ bv16 32))) (= (_ bv0 1) (select (store |c_old(#valid)| v_create_data_~data~0.base_219 v_ArrVal_11482) |create_data_#t~malloc7.base|)) (= (select |c_old(#valid)| v_create_data_~data~0.base_219) (_ bv0 1))))) is different from true [2022-11-20 12:12:38,167 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_299 (_ BitVec 32)) (v_create_data_~data~0.base_229 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_12028 (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (v_ArrVal_12027 (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| v_create_data_~data~0.base_229)) (= (store (store (store (store |c_old(#length)| v_create_data_~data~0.base_229 v_ArrVal_12028) v_arrayElimCell_299 v_ArrVal_12027) create_data_~data~0.base (_ bv16 32)) create_data_~nextData~0.base (_ bv16 32)) |c_#length|) (= (select (store |c_old(#valid)| v_create_data_~data~0.base_229 (_ bv1 1)) v_arrayElimCell_299) (_ bv0 1)) (not (= create_data_~nextData~0.base create_data_~data~0.base)))) (exists ((v_ArrVal_11482 (_ BitVec 1)) (v_ArrVal_11483 (_ BitVec 32)) (v_create_data_~data~0.base_219 (_ BitVec 32)) (v_ArrVal_11484 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_old(#valid)| v_create_data_~data~0.base_219 v_ArrVal_11482) |create_data_#t~malloc7.base|)) (= (store (store (store (store |c_old(#length)| v_create_data_~data~0.base_219 v_ArrVal_11484) |create_data_#t~malloc7.base| v_ArrVal_11483) create_data_~data~0.base (_ bv16 32)) create_data_~nextData~0.base (_ bv16 32)) |c_#length|) (= (select |c_old(#valid)| v_create_data_~data~0.base_219) (_ bv0 1))))) is different from true [2022-11-20 12:12:38,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:38,698 INFO L93 Difference]: Finished difference Result 888 states and 1060 transitions. [2022-11-20 12:12:38,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:12:38,699 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 16 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 66 [2022-11-20 12:12:38,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:38,703 INFO L225 Difference]: With dead ends: 888 [2022-11-20 12:12:38,703 INFO L226 Difference]: Without dead ends: 888 [2022-11-20 12:12:38,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 115 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=55, Invalid=154, Unknown=13, NotChecked=330, Total=552 [2022-11-20 12:12:38,704 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 258 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 2421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2228 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:38,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 867 Invalid, 2421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 190 Invalid, 0 Unknown, 2228 Unchecked, 0.6s Time] [2022-11-20 12:12:38,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2022-11-20 12:12:38,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 664. [2022-11-20 12:12:38,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 612 states have (on average 1.2450980392156863) internal successors, (762), 635 states have internal predecessors, (762), 8 states have call successors, (8), 3 states have call predecessors, (8), 12 states have return successors, (40), 25 states have call predecessors, (40), 8 states have call successors, (40) [2022-11-20 12:12:38,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 810 transitions. [2022-11-20 12:12:38,717 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 810 transitions. Word has length 66 [2022-11-20 12:12:38,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:38,718 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 810 transitions. [2022-11-20 12:12:38,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 16 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 12:12:38,718 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 810 transitions. [2022-11-20 12:12:38,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 12:12:38,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:38,719 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:38,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (90)] Ended with exit code 0 [2022-11-20 12:12:38,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:39,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:12:39,140 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:12:39,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:39,140 INFO L85 PathProgramCache]: Analyzing trace with hash -747494557, now seen corresponding path program 1 times [2022-11-20 12:12:39,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:39,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356128609] [2022-11-20 12:12:39,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:39,141 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 [2022-11-20 12:12:39,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:39,142 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:12:39,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (93)] Waiting until timeout for monitored process [2022-11-20 12:12:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:40,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:12:40,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:40,280 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 6 treesize of output 7 [2022-11-20 12:12:41,154 INFO L321 Elim1Store]: treesize reduction 123, result has 21.7 percent of original size [2022-11-20 12:12:41,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 34 treesize of output 56 [2022-11-20 12:12:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-20 12:12:41,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:12:43,326 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_create_data_#t~malloc7.base_215| (_ BitVec 32)) (v_ArrVal_12255 (_ BitVec 1)) (v_create_data_~data~0.base_244 (_ BitVec 32)) (v_create_data_~nextData~0.base_90 (_ BitVec 32))) (let ((.cse0 (store |c_#valid| v_create_data_~data~0.base_244 (_ bv1 1)))) (or (= (bvadd (select (store (store .cse0 |v_create_data_#t~malloc7.base_215| v_ArrVal_12255) v_create_data_~nextData~0.base_90 (_ bv1 1)) |c_ULTIMATE.start_append_~node~0#1.base|) (_ bv1 1)) (_ bv0 1)) (not (= (_ bv0 1) (select .cse0 |v_create_data_#t~malloc7.base_215|))) (not (= (select |c_#valid| v_create_data_~data~0.base_244) (_ bv0 1)))))) is different from false [2022-11-20 12:12:43,330 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:12:43,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [356128609] [2022-11-20 12:12:43,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [356128609] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:12:43,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [80238965] [2022-11-20 12:12:43,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:43,331 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:12:43,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:12:43,332 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:12:43,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (94)] Waiting until timeout for monitored process [2022-11-20 12:12:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:45,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:12:45,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:45,201 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 6 treesize of output 7 [2022-11-20 12:12:45,246 WARN L859 $PredicateComparison]: unable to prove that (exists ((|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_old(#valid)| c_create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (exists ((v_ArrVal_12454 (_ BitVec 1)) (v_ArrVal_12455 (_ BitVec 1))) (= (store (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_12455) |create_data_#t~malloc7.base| v_ArrVal_12454) |c_#valid|)))) is different from true [2022-11-20 12:12:45,574 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_12454 (_ BitVec 1)) (v_ArrVal_12455 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_old(#valid)| c_create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= |c_#valid| (store (store (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_12455) |create_data_#t~malloc7.base| v_ArrVal_12454) c_create_data_~nextData~0.base (_ bv1 1))))) is different from true [2022-11-20 12:12:48,164 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:12:48,269 INFO L321 Elim1Store]: treesize reduction 91, result has 27.2 percent of original size [2022-11-20 12:12:48,269 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 5 case distinctions, treesize of input 29 treesize of output 53 [2022-11-20 12:12:48,292 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 1 not checked. [2022-11-20 12:12:48,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:12:52,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [80238965] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:12:52,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:12:52,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2022-11-20 12:12:52,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391843318] [2022-11-20 12:12:52,479 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:12:52,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:12:52,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:12:52,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:12:52,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=67, Unknown=5, NotChecked=54, Total=156 [2022-11-20 12:12:52,480 INFO L87 Difference]: Start difference. First operand 664 states and 810 transitions. Second operand has 11 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 12:12:55,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:55,129 INFO L93 Difference]: Finished difference Result 730 states and 887 transitions. [2022-11-20 12:12:55,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:12:55,129 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2022-11-20 12:12:55,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:55,131 INFO L225 Difference]: With dead ends: 730 [2022-11-20 12:12:55,131 INFO L226 Difference]: Without dead ends: 730 [2022-11-20 12:12:55,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=45, Invalid=118, Unknown=5, NotChecked=72, Total=240 [2022-11-20 12:12:55,132 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 74 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 336 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:55,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 449 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 134 Invalid, 0 Unknown, 336 Unchecked, 0.3s Time] [2022-11-20 12:12:55,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2022-11-20 12:12:55,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 681. [2022-11-20 12:12:55,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 628 states have (on average 1.2452229299363058) internal successors, (782), 649 states have internal predecessors, (782), 8 states have call successors, (8), 3 states have call predecessors, (8), 13 states have return successors, (46), 28 states have call predecessors, (46), 8 states have call successors, (46) [2022-11-20 12:12:55,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 836 transitions. [2022-11-20 12:12:55,141 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 836 transitions. Word has length 67 [2022-11-20 12:12:55,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:55,142 INFO L495 AbstractCegarLoop]: Abstraction has 681 states and 836 transitions. [2022-11-20 12:12:55,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 12:12:55,142 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 836 transitions. [2022-11-20 12:12:55,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 12:12:55,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:55,143 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:55,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (94)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:55,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (93)] Ended with exit code 0 [2022-11-20 12:12:55,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt,93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 12:12:55,557 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:12:55,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:55,557 INFO L85 PathProgramCache]: Analyzing trace with hash -747494556, now seen corresponding path program 1 times [2022-11-20 12:12:55,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:12:55,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166448125] [2022-11-20 12:12:55,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:55,558 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 [2022-11-20 12:12:55,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:12:55,559 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:12:55,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (95)] Waiting until timeout for monitored process [2022-11-20 12:12:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:56,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:12:56,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:56,750 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 6 treesize of output 7 [2022-11-20 12:12:56,760 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 6 treesize of output 5 [2022-11-20 12:12:56,901 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_12667 (_ BitVec 32)) (v_ArrVal_12668 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_12667) |create_data_#t~malloc7.base| v_ArrVal_12668) |c_#length|)) (exists ((v_ArrVal_12669 (_ BitVec 1))) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_12669) |create_data_#t~malloc7.base|))))) is different from true [2022-11-20 12:12:57,569 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_12669 (_ BitVec 1)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (v_ArrVal_12667 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32)) (v_ArrVal_12668 (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= |c_#length| (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_12667) |create_data_#t~malloc7.base| v_ArrVal_12668) create_data_~nextData~0.base (_ bv16 32))) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_12669) |create_data_#t~malloc7.base|)))) is different from true [2022-11-20 12:12:57,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:12:57,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:12:57,983 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-20 12:12:57,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 39 [2022-11-20 12:12:58,062 INFO L321 Elim1Store]: treesize reduction 17, result has 45.2 percent of original size [2022-11-20 12:12:58,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 38 [2022-11-20 12:12:58,141 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 1 not checked. [2022-11-20 12:12:58,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:13:00,416 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_append_~node~0#1.offset|))) (and (forall ((v_create_data_~data~0.base_256 (_ BitVec 32))) (or (forall ((|v_create_data_#t~malloc7.base_227| (_ BitVec 32)) (v_ArrVal_12680 (_ BitVec 1))) (or (forall ((v_create_data_~nextData~0.base_96 (_ BitVec 32)) (v_ArrVal_12678 (_ BitVec 32)) (v_ArrVal_12679 (_ BitVec 32))) (bvule .cse0 (select (store (store (store |c_#length| v_create_data_~data~0.base_256 v_ArrVal_12678) |v_create_data_#t~malloc7.base_227| v_ArrVal_12679) v_create_data_~nextData~0.base_96 (_ bv16 32)) |c_ULTIMATE.start_append_~node~0#1.base|))) (not (= (_ bv0 1) (select (store |c_#valid| v_create_data_~data~0.base_256 v_ArrVal_12680) |v_create_data_#t~malloc7.base_227|))))) (not (= (_ bv0 1) (select |c_#valid| v_create_data_~data~0.base_256))))) (or (forall ((v_ArrVal_12680 (_ BitVec 1)) (|v_create_data_#t~malloc7.base_227| (_ BitVec 32)) (v_create_data_~data~0.base_256 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_create_data_~data~0.base_256))) (not (= (_ bv0 1) (select (store |c_#valid| v_create_data_~data~0.base_256 v_ArrVal_12680) |v_create_data_#t~malloc7.base_227|))))) (bvule |c_ULTIMATE.start_append_~node~0#1.offset| .cse0)))) is different from false [2022-11-20 12:13:00,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:13:00,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166448125] [2022-11-20 12:13:00,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166448125] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:13:00,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [880160517] [2022-11-20 12:13:00,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:00,424 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:13:00,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:13:00,425 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:13:00,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (96)] Waiting until timeout for monitored process [2022-11-20 12:13:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:02,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 12:13:02,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:02,569 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 6 treesize of output 7 [2022-11-20 12:13:02,575 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 6 treesize of output 5 [2022-11-20 12:13:02,720 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_12881 (_ BitVec 32)) (v_ArrVal_12880 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_12881) |create_data_#t~malloc7.base| v_ArrVal_12880) |c_#length|))) is different from true [2022-11-20 12:13:03,364 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_12881 (_ BitVec 32)) (v_ArrVal_12880 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_12881) |create_data_#t~malloc7.base| v_ArrVal_12880) c_create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) is different from true [2022-11-20 12:13:03,515 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_12881 (_ BitVec 32)) (v_ArrVal_12880 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= |c_#length| (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_12881) |create_data_#t~malloc7.base| v_ArrVal_12880) create_data_~nextData~0.base (_ bv16 32))) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)))) is different from true [2022-11-20 12:13:03,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:13:03,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:13:03,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:13:03,756 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-20 12:13:03,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2022-11-20 12:13:03,817 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-20 12:13:03,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-11-20 12:13:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 1 not checked. [2022-11-20 12:13:03,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:13:04,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [880160517] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:13:04,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:13:04,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2022-11-20 12:13:04,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150411522] [2022-11-20 12:13:04,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:13:04,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:13:04,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:13:04,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:13:04,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=6, NotChecked=114, Total=210 [2022-11-20 12:13:04,325 INFO L87 Difference]: Start difference. First operand 681 states and 836 transitions. Second operand has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 12:13:04,411 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |c_create_data_#t~malloc7.base|)) (exists ((v_ArrVal_12881 (_ BitVec 32)) (v_ArrVal_12880 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_12881) |c_create_data_#t~malloc7.base| v_ArrVal_12880) |c_#length|)))) (exists ((create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_12667 (_ BitVec 32)) (v_ArrVal_12668 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_12667) |create_data_#t~malloc7.base| v_ArrVal_12668) |c_#length|)) (exists ((v_ArrVal_12669 (_ BitVec 1))) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_12669) |create_data_#t~malloc7.base|)))))) is different from true [2022-11-20 12:13:04,418 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_12667 (_ BitVec 32)) (v_ArrVal_12668 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_12667) |create_data_#t~malloc7.base| v_ArrVal_12668) |c_#length|)) (exists ((v_ArrVal_12669 (_ BitVec 1))) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_12669) |create_data_#t~malloc7.base|))))) (exists ((v_ArrVal_12881 (_ BitVec 32)) (v_ArrVal_12880 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_12881) |create_data_#t~malloc7.base| v_ArrVal_12880) |c_#length|)))) is different from true [2022-11-20 12:13:04,428 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_12881 (_ BitVec 32)) (v_ArrVal_12880 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_12881) |create_data_#t~malloc7.base| v_ArrVal_12880) c_create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) (exists ((v_ArrVal_12669 (_ BitVec 1)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (v_ArrVal_12667 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32)) (v_ArrVal_12668 (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= |c_#length| (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_12667) |create_data_#t~malloc7.base| v_ArrVal_12668) create_data_~nextData~0.base (_ bv16 32))) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_12669) |create_data_#t~malloc7.base|))))) is different from true [2022-11-20 12:13:04,463 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_12881 (_ BitVec 32)) (v_ArrVal_12880 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= |c_#length| (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_12881) |create_data_#t~malloc7.base| v_ArrVal_12880) create_data_~nextData~0.base (_ bv16 32))) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)))) (exists ((v_ArrVal_12669 (_ BitVec 1)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (v_ArrVal_12667 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32)) (v_ArrVal_12668 (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= |c_#length| (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_12667) |create_data_#t~malloc7.base| v_ArrVal_12668) create_data_~nextData~0.base (_ bv16 32))) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_12669) |create_data_#t~malloc7.base|))))) is different from true [2022-11-20 12:13:04,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:04,931 INFO L93 Difference]: Finished difference Result 845 states and 1025 transitions. [2022-11-20 12:13:04,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:13:04,933 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2022-11-20 12:13:04,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:04,936 INFO L225 Difference]: With dead ends: 845 [2022-11-20 12:13:04,936 INFO L226 Difference]: Without dead ends: 845 [2022-11-20 12:13:04,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=49, Invalid=91, Unknown=10, NotChecked=270, Total=420 [2022-11-20 12:13:04,937 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 189 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1255 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:04,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 475 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 168 Invalid, 0 Unknown, 1255 Unchecked, 0.5s Time] [2022-11-20 12:13:04,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-11-20 12:13:04,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 664. [2022-11-20 12:13:04,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 612 states have (on average 1.2450980392156863) internal successors, (762), 635 states have internal predecessors, (762), 8 states have call successors, (8), 3 states have call predecessors, (8), 12 states have return successors, (40), 25 states have call predecessors, (40), 8 states have call successors, (40) [2022-11-20 12:13:04,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 810 transitions. [2022-11-20 12:13:04,969 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 810 transitions. Word has length 67 [2022-11-20 12:13:04,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:04,969 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 810 transitions. [2022-11-20 12:13:04,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 12:13:04,970 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 810 transitions. [2022-11-20 12:13:04,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 12:13:04,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:04,971 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:13:04,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (95)] Forceful destruction successful, exit code 0 [2022-11-20 12:13:05,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (96)] Ended with exit code 0 [2022-11-20 12:13:05,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 12:13:05,391 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-20 12:13:05,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:05,391 INFO L85 PathProgramCache]: Analyzing trace with hash 803066894, now seen corresponding path program 1 times [2022-11-20 12:13:05,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:13:05,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721796578] [2022-11-20 12:13:05,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:05,392 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 [2022-11-20 12:13:05,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:13:05,393 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 12:13:05,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7c9c77-2a27-4039-8920-d7a1c5d15429/bin/uautomizer-ug76WZFUDN/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 (97)] Waiting until timeout for monitored process [2022-11-20 12:13:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:06,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-20 12:13:06,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:06,478 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 6 treesize of output 7 [2022-11-20 12:13:06,531 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 12:13:06,531 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 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-20 12:13:06,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:13:06,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:13:07,001 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:13:07,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 40 [2022-11-20 12:13:07,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:13:07,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-20 12:13:07,122 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:13:07,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 40 [2022-11-20 12:13:07,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:13:07,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-20 12:13:07,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-20 12:13:07,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:13:07,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 12:13:09,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:13:09,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:13:09,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:13:09,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:13:09,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-20 12:13:09,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 49 [2022-11-20 12:13:09,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:13:11,821 INFO L321 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2022-11-20 12:13:11,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 29 treesize of output 37 [2022-11-20 12:13:11,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:13:11,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:13:12,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2022-11-20 12:13:12,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-20 12:13:13,071 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-20 12:13:13,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 48 [2022-11-20 12:13:13,401 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 12:13:13,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 21 [2022-11-20 12:13:13,484 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 12:13:13,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:13:14,838 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:13:14,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 6534 treesize of output 6167 [2022-11-20 12:15:38,774 WARN L233 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 24 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 12:16:39,383 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 3 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)