./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a --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 ceb4cfb737a49cea9ea1be451c16ebb29f48ae611a8c94fc546ca2e3471f0eb3 --- 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-b5237d8 [2022-11-21 09:03:36,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:03:36,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:03:36,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:03:36,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:03:36,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:03:36,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:03:36,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:03:36,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:03:36,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:03:36,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:03:36,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:03:36,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:03:36,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:03:36,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:03:36,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:03:36,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:03:36,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:03:36,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:03:36,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:03:36,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:03:36,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:03:36,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:03:36,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:03:36,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:03:36,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:03:36,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:03:36,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:03:36,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:03:36,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:03:36,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:03:36,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:03:36,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:03:36,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:03:36,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:03:36,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:03:36,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:03:36,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:03:36,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:03:36,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:03:36,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:03:36,638 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-21 09:03:36,678 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:03:36,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:03:36,684 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:03:36,684 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:03:36,686 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:03:36,686 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:03:36,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:03:36,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:03:36,688 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:03:36,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:03:36,690 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 09:03:36,690 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 09:03:36,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:03:36,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 09:03:36,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:03:36,691 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 09:03:36,692 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 09:03:36,692 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 09:03:36,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:03:36,693 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 09:03:36,693 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 09:03:36,694 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:03:36,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:03:36,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:03:36,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:03:36,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:03:36,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:03:36,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:03:36,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:03:36,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 09:03:36,698 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_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceb4cfb737a49cea9ea1be451c16ebb29f48ae611a8c94fc546ca2e3471f0eb3 [2022-11-21 09:03:37,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:03:37,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:03:37,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:03:37,097 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:03:37,098 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:03:37,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2022-11-21 09:03:40,342 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:03:40,630 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:03:40,630 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2022-11-21 09:03:40,637 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/data/36cd0a413/23c882e2dfab4c6481444096aa56c46a/FLAGbd8bd5326 [2022-11-21 09:03:40,653 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/data/36cd0a413/23c882e2dfab4c6481444096aa56c46a [2022-11-21 09:03:40,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:03:40,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:03:40,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:03:40,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:03:40,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:03:40,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:03:40" (1/1) ... [2022-11-21 09:03:40,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60d8dd98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:40, skipping insertion in model container [2022-11-21 09:03:40,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:03:40" (1/1) ... [2022-11-21 09:03:40,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:03:40,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:03:40,884 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c[2586,2599] [2022-11-21 09:03:40,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:03:40,908 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) [2022-11-21 09:03:40,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5a9f3daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:40, skipping insertion in model container [2022-11-21 09:03:40,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:03:40,909 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-21 09:03:40,911 INFO L158 Benchmark]: Toolchain (without parser) took 253.22ms. Allocated memory is still 176.2MB. Free memory was 145.1MB in the beginning and 135.2MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 09:03:40,912 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 130.0MB. Free memory is still 75.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 09:03:40,913 INFO L158 Benchmark]: CACSL2BoogieTranslator took 250.47ms. Allocated memory is still 176.2MB. Free memory was 144.6MB in the beginning and 135.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 09:03:40,914 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 130.0MB. Free memory is still 75.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 250.47ms. Allocated memory is still 176.2MB. Free memory was 144.6MB in the beginning and 135.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 109]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a --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 ceb4cfb737a49cea9ea1be451c16ebb29f48ae611a8c94fc546ca2e3471f0eb3 --- 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-b5237d8 [2022-11-21 09:03:43,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:03:43,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:03:43,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:03:43,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:03:43,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:03:43,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:03:43,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:03:43,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:03:43,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:03:43,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:03:43,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:03:43,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:03:43,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:03:43,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:03:43,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:03:43,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:03:43,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:03:43,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:03:43,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:03:43,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:03:43,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:03:43,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:03:43,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:03:43,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:03:43,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:03:43,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:03:43,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:03:43,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:03:43,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:03:43,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:03:43,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:03:43,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:03:43,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:03:43,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:03:43,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:03:43,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:03:43,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:03:43,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:03:43,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:03:43,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:03:43,794 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-21 09:03:43,842 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:03:43,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:03:43,844 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:03:43,845 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:03:43,846 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:03:43,847 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:03:43,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:03:43,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:03:43,848 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:03:43,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:03:43,850 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 09:03:43,851 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 09:03:43,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:03:43,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 09:03:43,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:03:43,852 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 09:03:43,852 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 09:03:43,853 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 09:03:43,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:03:43,853 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 09:03:43,854 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-21 09:03:43,854 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-21 09:03:43,854 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 09:03:43,855 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:03:43,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:03:43,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:03:43,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:03:43,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:03:43,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:03:43,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:03:43,857 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-21 09:03:43,857 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-21 09:03:43,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-21 09:03:43,858 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceb4cfb737a49cea9ea1be451c16ebb29f48ae611a8c94fc546ca2e3471f0eb3 [2022-11-21 09:03:44,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:03:44,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:03:44,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:03:44,398 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:03:44,407 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:03:44,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2022-11-21 09:03:47,940 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:03:48,209 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:03:48,210 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2022-11-21 09:03:48,218 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/data/9e8f5bb14/bc80ee83c7ce4b00a87db82c4d771124/FLAG04cf7b7e0 [2022-11-21 09:03:48,249 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/data/9e8f5bb14/bc80ee83c7ce4b00a87db82c4d771124 [2022-11-21 09:03:48,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:03:48,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:03:48,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:03:48,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:03:48,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:03:48,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:03:48" (1/1) ... [2022-11-21 09:03:48,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@224fe4af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:48, skipping insertion in model container [2022-11-21 09:03:48,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:03:48" (1/1) ... [2022-11-21 09:03:48,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:03:48,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:03:48,557 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c[2586,2599] [2022-11-21 09:03:48,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:03:48,613 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-21 09:03:48,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:03:48,654 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c[2586,2599] [2022-11-21 09:03:48,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:03:48,709 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:03:48,756 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c[2586,2599] [2022-11-21 09:03:48,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:03:48,798 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:03:48,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:48 WrapperNode [2022-11-21 09:03:48,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:03:48,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:03:48,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:03:48,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:03:48,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:48" (1/1) ... [2022-11-21 09:03:48,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:48" (1/1) ... [2022-11-21 09:03:48,883 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 99 [2022-11-21 09:03:48,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:03:48,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:03:48,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:03:48,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:03:48,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:48" (1/1) ... [2022-11-21 09:03:48,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:48" (1/1) ... [2022-11-21 09:03:48,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:48" (1/1) ... [2022-11-21 09:03:48,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:48" (1/1) ... [2022-11-21 09:03:48,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:48" (1/1) ... [2022-11-21 09:03:48,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:48" (1/1) ... [2022-11-21 09:03:48,934 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:48" (1/1) ... [2022-11-21 09:03:48,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:48" (1/1) ... [2022-11-21 09:03:48,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:03:48,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:03:48,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:03:48,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:03:48,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:48" (1/1) ... [2022-11-21 09:03:48,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:03:48,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:03:49,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 09:03:49,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 09:03:49,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 09:03:49,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-21 09:03:49,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 09:03:49,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-21 09:03:49,080 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 09:03:49,080 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 09:03:49,080 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 09:03:49,081 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 09:03:49,081 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 09:03:49,081 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 09:03:49,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 09:03:49,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 09:03:49,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 09:03:49,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:03:49,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:03:49,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 09:03:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-21 09:03:49,085 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 09:03:49,282 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:03:49,285 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:03:50,050 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:03:50,311 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:03:50,312 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-21 09:03:50,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:03:50 BoogieIcfgContainer [2022-11-21 09:03:50,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:03:50,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 09:03:50,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 09:03:50,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 09:03:50,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:03:48" (1/3) ... [2022-11-21 09:03:50,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f9481a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:03:50, skipping insertion in model container [2022-11-21 09:03:50,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:48" (2/3) ... [2022-11-21 09:03:50,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f9481a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:03:50, skipping insertion in model container [2022-11-21 09:03:50,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:03:50" (3/3) ... [2022-11-21 09:03:50,328 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array-hom.wvr.c [2022-11-21 09:03:50,350 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 09:03:50,351 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-11-21 09:03:50,351 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 09:03:50,518 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 09:03:50,582 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-21 09:03:50,615 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 181 transitions, 386 flow [2022-11-21 09:03:50,621 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 181 transitions, 386 flow [2022-11-21 09:03:50,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 181 transitions, 386 flow [2022-11-21 09:03:50,767 INFO L130 PetriNetUnfolder]: 12/178 cut-off events. [2022-11-21 09:03:50,768 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 09:03:50,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 178 events. 12/178 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 204 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2022-11-21 09:03:50,779 INFO L119 LiptonReduction]: Number of co-enabled transitions 2688 [2022-11-21 09:04:28,084 INFO L134 LiptonReduction]: Checked pairs total: 3576 [2022-11-21 09:04:28,085 INFO L136 LiptonReduction]: Total number of compositions: 178 [2022-11-21 09:04:28,099 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 55 transitions, 134 flow [2022-11-21 09:04:28,259 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1830 states, 1330 states have (on average 4.845112781954887) internal successors, (6444), 1829 states have internal predecessors, (6444), 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) [2022-11-21 09:04:28,288 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:04:28,296 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;@5863449f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:04:28,296 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2022-11-21 09:04:28,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 1830 states, 1330 states have (on average 4.845112781954887) internal successors, (6444), 1829 states have internal predecessors, (6444), 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) [2022-11-21 09:04:28,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 09:04:28,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:28,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 09:04:28,316 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:04:28,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:28,328 INFO L85 PathProgramCache]: Analyzing trace with hash 23267, now seen corresponding path program 1 times [2022-11-21 09:04:28,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:04:28,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544290985] [2022-11-21 09:04:28,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:28,343 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 [2022-11-21 09:04:28,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:04:28,350 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:04:28,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:28,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 09:04:28,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:28,710 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-21 09:04:28,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-21 09:04:28,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:28,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:04:28,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:04:28,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544290985] [2022-11-21 09:04:28,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544290985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:28,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:28,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 09:04:28,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620667889] [2022-11-21 09:04:28,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:28,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:04:28,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:04:28,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:04:28,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:04:28,789 INFO L87 Difference]: Start difference. First operand has 1830 states, 1330 states have (on average 4.845112781954887) internal successors, (6444), 1829 states have internal predecessors, (6444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:29,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:29,159 INFO L93 Difference]: Finished difference Result 748 states and 2564 transitions. [2022-11-21 09:04:29,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:04:29,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-21 09:04:29,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:29,191 INFO L225 Difference]: With dead ends: 748 [2022-11-21 09:04:29,191 INFO L226 Difference]: Without dead ends: 748 [2022-11-21 09:04:29,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:04:29,196 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:29,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 09:04:29,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-11-21 09:04:29,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2022-11-21 09:04:29,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 616 states have (on average 4.162337662337662) internal successors, (2564), 747 states have internal predecessors, (2564), 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) [2022-11-21 09:04:29,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 2564 transitions. [2022-11-21 09:04:29,430 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 2564 transitions. Word has length 2 [2022-11-21 09:04:29,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:29,431 INFO L495 AbstractCegarLoop]: Abstraction has 748 states and 2564 transitions. [2022-11-21 09:04:29,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:29,432 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 2564 transitions. [2022-11-21 09:04:29,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 09:04:29,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:29,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 09:04:29,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Ended with exit code 0 [2022-11-21 09:04:29,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:04:29,648 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:04:29,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:29,649 INFO L85 PathProgramCache]: Analyzing trace with hash 23268, now seen corresponding path program 1 times [2022-11-21 09:04:29,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:04:29,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896169083] [2022-11-21 09:04:29,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:29,651 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 [2022-11-21 09:04:29,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:04:29,653 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:04:29,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:29,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 09:04:29,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:29,973 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:04:29,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 09:04:30,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:30,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:04:30,012 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:04:30,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896169083] [2022-11-21 09:04:30,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896169083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:30,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:30,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 09:04:30,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027595640] [2022-11-21 09:04:30,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:30,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:04:30,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:04:30,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:04:30,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:04:30,017 INFO L87 Difference]: Start difference. First operand 748 states and 2564 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:30,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:30,560 INFO L93 Difference]: Finished difference Result 1494 states and 5126 transitions. [2022-11-21 09:04:30,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:04:30,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-21 09:04:30,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:30,577 INFO L225 Difference]: With dead ends: 1494 [2022-11-21 09:04:30,577 INFO L226 Difference]: Without dead ends: 1494 [2022-11-21 09:04:30,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:04:30,579 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 40 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:30,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 6 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 09:04:30,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2022-11-21 09:04:30,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 749. [2022-11-21 09:04:30,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 617 states have (on average 4.162074554294976) internal successors, (2568), 748 states have internal predecessors, (2568), 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) [2022-11-21 09:04:30,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 2568 transitions. [2022-11-21 09:04:30,635 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 2568 transitions. Word has length 2 [2022-11-21 09:04:30,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:30,636 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 2568 transitions. [2022-11-21 09:04:30,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:30,637 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 2568 transitions. [2022-11-21 09:04:30,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 09:04:30,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:30,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 09:04:30,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:30,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:04:30,852 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:04:30,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:30,852 INFO L85 PathProgramCache]: Analyzing trace with hash 23423, now seen corresponding path program 1 times [2022-11-21 09:04:30,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:04:30,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006571863] [2022-11-21 09:04:30,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:30,863 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 [2022-11-21 09:04:30,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:04:30,864 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:04:30,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:30,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 09:04:30,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:31,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:31,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:04:31,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:04:31,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006571863] [2022-11-21 09:04:31,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006571863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:31,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:31,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 09:04:31,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541690840] [2022-11-21 09:04:31,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:31,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:04:31,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:04:31,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:04:31,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:04:31,013 INFO L87 Difference]: Start difference. First operand 749 states and 2568 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:31,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:31,344 INFO L93 Difference]: Finished difference Result 749 states and 2565 transitions. [2022-11-21 09:04:31,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:04:31,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-21 09:04:31,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:31,352 INFO L225 Difference]: With dead ends: 749 [2022-11-21 09:04:31,352 INFO L226 Difference]: Without dead ends: 749 [2022-11-21 09:04:31,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:04:31,360 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:31,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 09:04:31,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-11-21 09:04:31,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 749. [2022-11-21 09:04:31,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 617 states have (on average 4.157212317666127) internal successors, (2565), 748 states have internal predecessors, (2565), 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) [2022-11-21 09:04:31,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 2565 transitions. [2022-11-21 09:04:31,408 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 2565 transitions. Word has length 2 [2022-11-21 09:04:31,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:31,409 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 2565 transitions. [2022-11-21 09:04:31,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:31,411 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 2565 transitions. [2022-11-21 09:04:31,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 09:04:31,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:31,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 09:04:31,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:31,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:04:31,652 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:04:31,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:31,653 INFO L85 PathProgramCache]: Analyzing trace with hash 725604, now seen corresponding path program 1 times [2022-11-21 09:04:31,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:04:31,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501016140] [2022-11-21 09:04:31,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:31,654 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 [2022-11-21 09:04:31,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:04:31,656 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:04:31,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:31,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 09:04:31,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:31,959 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:04:31,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 09:04:32,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:32,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:04:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:32,404 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:04:32,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501016140] [2022-11-21 09:04:32,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501016140] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:04:32,405 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:04:32,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-21 09:04:32,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767606138] [2022-11-21 09:04:32,405 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:04:32,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:04:32,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:04:32,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:04:32,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:04:32,407 INFO L87 Difference]: Start difference. First operand 749 states and 2565 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:33,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:33,535 INFO L93 Difference]: Finished difference Result 1497 states and 5135 transitions. [2022-11-21 09:04:33,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 09:04:33,537 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-21 09:04:33,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:33,552 INFO L225 Difference]: With dead ends: 1497 [2022-11-21 09:04:33,552 INFO L226 Difference]: Without dead ends: 1497 [2022-11-21 09:04:33,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:04:33,554 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 163 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:33,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 9 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 09:04:33,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2022-11-21 09:04:33,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 752. [2022-11-21 09:04:33,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 620 states have (on average 4.156451612903226) internal successors, (2577), 751 states have internal predecessors, (2577), 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) [2022-11-21 09:04:33,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 2577 transitions. [2022-11-21 09:04:33,604 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 2577 transitions. Word has length 3 [2022-11-21 09:04:33,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:33,605 INFO L495 AbstractCegarLoop]: Abstraction has 752 states and 2577 transitions. [2022-11-21 09:04:33,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:33,605 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 2577 transitions. [2022-11-21 09:04:33,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 09:04:33,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:33,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 09:04:33,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:33,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:04:33,819 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:04:33,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:33,820 INFO L85 PathProgramCache]: Analyzing trace with hash 725759, now seen corresponding path program 1 times [2022-11-21 09:04:33,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:04:33,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141962852] [2022-11-21 09:04:33,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:33,821 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 [2022-11-21 09:04:33,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:04:33,822 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:04:33,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:33,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 09:04:33,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:34,089 INFO L321 Elim1Store]: treesize reduction 115, result has 16.1 percent of original size [2022-11-21 09:04:34,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 47 [2022-11-21 09:04:34,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 09:04:34,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:04:34,210 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:04:34,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141962852] [2022-11-21 09:04:34,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141962852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:34,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:34,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 09:04:34,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566029269] [2022-11-21 09:04:34,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:34,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:04:34,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:04:34,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:04:34,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:04:34,213 INFO L87 Difference]: Start difference. First operand 752 states and 2577 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:34,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:34,564 INFO L93 Difference]: Finished difference Result 626 states and 2073 transitions. [2022-11-21 09:04:34,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:04:34,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-21 09:04:34,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:34,571 INFO L225 Difference]: With dead ends: 626 [2022-11-21 09:04:34,571 INFO L226 Difference]: Without dead ends: 626 [2022-11-21 09:04:34,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:04:34,572 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:34,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 09:04:34,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2022-11-21 09:04:34,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2022-11-21 09:04:34,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 522 states have (on average 3.971264367816092) internal successors, (2073), 625 states have internal predecessors, (2073), 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) [2022-11-21 09:04:34,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 2073 transitions. [2022-11-21 09:04:34,620 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 2073 transitions. Word has length 3 [2022-11-21 09:04:34,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:34,620 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 2073 transitions. [2022-11-21 09:04:34,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:34,622 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 2073 transitions. [2022-11-21 09:04:34,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 09:04:34,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:34,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 09:04:34,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-21 09:04:34,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:04:34,837 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:04:34,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:34,838 INFO L85 PathProgramCache]: Analyzing trace with hash 725760, now seen corresponding path program 1 times [2022-11-21 09:04:34,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:04:34,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026796608] [2022-11-21 09:04:34,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:34,839 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 [2022-11-21 09:04:34,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:04:34,840 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:04:34,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:34,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 09:04:34,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:35,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:04:35,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:04:35,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:04:35,156 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-21 09:04:35,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 15 treesize of output 33 [2022-11-21 09:04:35,199 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-21 09:04:35,200 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 23 treesize of output 19 [2022-11-21 09:04:35,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:35,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:04:35,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:35,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:04:35,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026796608] [2022-11-21 09:04:35,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026796608] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 09:04:35,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:04:35,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-11-21 09:04:35,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692811947] [2022-11-21 09:04:35,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:35,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:04:35,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:04:35,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:04:35,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:04:35,501 INFO L87 Difference]: Start difference. First operand 626 states and 2073 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:35,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:35,844 INFO L93 Difference]: Finished difference Result 500 states and 1569 transitions. [2022-11-21 09:04:35,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:04:35,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-21 09:04:35,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:35,850 INFO L225 Difference]: With dead ends: 500 [2022-11-21 09:04:35,851 INFO L226 Difference]: Without dead ends: 500 [2022-11-21 09:04:35,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:04:35,852 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 38 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:35,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 09:04:35,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-11-21 09:04:35,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2022-11-21 09:04:35,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 424 states have (on average 3.7004716981132075) internal successors, (1569), 499 states have internal predecessors, (1569), 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) [2022-11-21 09:04:35,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 1569 transitions. [2022-11-21 09:04:35,875 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 1569 transitions. Word has length 3 [2022-11-21 09:04:35,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:35,876 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 1569 transitions. [2022-11-21 09:04:35,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:35,876 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1569 transitions. [2022-11-21 09:04:35,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 09:04:35,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:35,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 09:04:35,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:36,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:04:36,092 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:04:36,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:36,092 INFO L85 PathProgramCache]: Analyzing trace with hash 697470199, now seen corresponding path program 1 times [2022-11-21 09:04:36,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:04:36,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418128577] [2022-11-21 09:04:36,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:36,093 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 [2022-11-21 09:04:36,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:04:36,095 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:04:36,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:36,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 09:04:36,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:36,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:04:36,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:04:36,412 INFO L321 Elim1Store]: treesize reduction 49, result has 38.8 percent of original size [2022-11-21 09:04:36,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 38 [2022-11-21 09:04:36,429 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 14 treesize of output 12 [2022-11-21 09:04:36,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:36,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:04:37,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:37,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:04:37,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418128577] [2022-11-21 09:04:37,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418128577] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:04:37,087 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:04:37,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-21 09:04:37,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642987884] [2022-11-21 09:04:37,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:04:37,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 09:04:37,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:04:37,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 09:04:37,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:04:37,089 INFO L87 Difference]: Start difference. First operand 500 states and 1569 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) [2022-11-21 09:04:37,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:37,859 INFO L93 Difference]: Finished difference Result 933 states and 2957 transitions. [2022-11-21 09:04:37,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:04:37,860 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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 5 [2022-11-21 09:04:37,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:37,867 INFO L225 Difference]: With dead ends: 933 [2022-11-21 09:04:37,867 INFO L226 Difference]: Without dead ends: 933 [2022-11-21 09:04:37,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-21 09:04:37,869 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 107 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:37,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 9 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 09:04:37,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2022-11-21 09:04:37,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 470. [2022-11-21 09:04:37,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 406 states have (on average 3.6551724137931036) internal successors, (1484), 469 states have internal predecessors, (1484), 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) [2022-11-21 09:04:37,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1484 transitions. [2022-11-21 09:04:37,895 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1484 transitions. Word has length 5 [2022-11-21 09:04:37,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:37,896 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 1484 transitions. [2022-11-21 09:04:37,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) [2022-11-21 09:04:37,897 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1484 transitions. [2022-11-21 09:04:37,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 09:04:37,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:37,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 09:04:37,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:38,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:04:38,112 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:04:38,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:38,113 INFO L85 PathProgramCache]: Analyzing trace with hash 697470198, now seen corresponding path program 1 times [2022-11-21 09:04:38,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:04:38,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293297939] [2022-11-21 09:04:38,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:38,113 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 [2022-11-21 09:04:38,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:04:38,116 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:04:38,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:38,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 09:04:38,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:38,337 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-21 09:04:38,337 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 4 case distinctions, treesize of input 29 treesize of output 40 [2022-11-21 09:04:38,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 09:04:38,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:04:38,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:04:38,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293297939] [2022-11-21 09:04:38,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293297939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:38,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:38,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 09:04:38,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129488415] [2022-11-21 09:04:38,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:38,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:04:38,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:04:38,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:04:38,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:04:38,500 INFO L87 Difference]: Start difference. First operand 470 states and 1484 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2022-11-21 09:04:38,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:38,701 INFO L93 Difference]: Finished difference Result 440 states and 1399 transitions. [2022-11-21 09:04:38,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:04:38,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 [2022-11-21 09:04:38,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:38,707 INFO L225 Difference]: With dead ends: 440 [2022-11-21 09:04:38,708 INFO L226 Difference]: Without dead ends: 440 [2022-11-21 09:04:38,708 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 [2022-11-21 09:04:38,709 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:38,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 09:04:38,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-11-21 09:04:38,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 440. [2022-11-21 09:04:38,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 388 states have (on average 3.6056701030927836) internal successors, (1399), 439 states have internal predecessors, (1399), 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) [2022-11-21 09:04:38,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1399 transitions. [2022-11-21 09:04:38,728 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1399 transitions. Word has length 5 [2022-11-21 09:04:38,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:38,729 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 1399 transitions. [2022-11-21 09:04:38,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2022-11-21 09:04:38,729 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1399 transitions. [2022-11-21 09:04:38,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 09:04:38,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:38,730 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-21 09:04:38,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Ended with exit code 0 [2022-11-21 09:04:38,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:04:38,944 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:04:38,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:38,945 INFO L85 PathProgramCache]: Analyzing trace with hash 145898212, now seen corresponding path program 2 times [2022-11-21 09:04:38,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:04:38,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413031244] [2022-11-21 09:04:38,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 09:04:38,948 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 [2022-11-21 09:04:38,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:04:38,949 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:04:38,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:39,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 09:04:39,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:04:39,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 09:04:39,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:39,271 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:04:39,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 09:04:39,492 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:39,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:04:40,430 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:40,430 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:04:40,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413031244] [2022-11-21 09:04:40,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413031244] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:04:40,431 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:04:40,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-21 09:04:40,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075448781] [2022-11-21 09:04:40,431 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:04:40,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 09:04:40,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:04:40,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 09:04:40,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-21 09:04:40,432 INFO L87 Difference]: Start difference. First operand 440 states and 1399 transitions. Second operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:46,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:46,329 INFO L93 Difference]: Finished difference Result 3910 states and 12515 transitions. [2022-11-21 09:04:46,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 09:04:46,331 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-21 09:04:46,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:46,362 INFO L225 Difference]: With dead ends: 3910 [2022-11-21 09:04:46,362 INFO L226 Difference]: Without dead ends: 3910 [2022-11-21 09:04:46,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:04:46,363 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 672 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:46,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 72 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-21 09:04:46,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3910 states. [2022-11-21 09:04:46,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3910 to 446. [2022-11-21 09:04:46,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 394 states have (on average 3.581218274111675) internal successors, (1411), 445 states have internal predecessors, (1411), 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) [2022-11-21 09:04:46,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1411 transitions. [2022-11-21 09:04:46,423 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1411 transitions. Word has length 6 [2022-11-21 09:04:46,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:46,423 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 1411 transitions. [2022-11-21 09:04:46,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:46,424 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1411 transitions. [2022-11-21 09:04:46,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 09:04:46,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:46,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 09:04:46,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:46,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:04:46,639 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:04:46,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:46,640 INFO L85 PathProgramCache]: Analyzing trace with hash 146734139, now seen corresponding path program 1 times [2022-11-21 09:04:46,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:04:46,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [128370635] [2022-11-21 09:04:46,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:46,641 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 [2022-11-21 09:04:46,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:04:46,642 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:04:46,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:46,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 09:04:46,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:46,867 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-21 09:04:46,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-21 09:04:46,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 09:04:46,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:04:46,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:04:46,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [128370635] [2022-11-21 09:04:46,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [128370635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:46,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:46,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 09:04:46,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730734806] [2022-11-21 09:04:46,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:46,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:04:46,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:04:46,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:04:46,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:04:46,910 INFO L87 Difference]: Start difference. First operand 446 states and 1411 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:47,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:47,127 INFO L93 Difference]: Finished difference Result 264 states and 810 transitions. [2022-11-21 09:04:47,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:04:47,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-21 09:04:47,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:47,132 INFO L225 Difference]: With dead ends: 264 [2022-11-21 09:04:47,132 INFO L226 Difference]: Without dead ends: 264 [2022-11-21 09:04:47,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:04:47,134 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 56 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:47,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 09:04:47,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-21 09:04:47,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2022-11-21 09:04:47,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 243 states have (on average 3.3333333333333335) internal successors, (810), 263 states have internal predecessors, (810), 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) [2022-11-21 09:04:47,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 810 transitions. [2022-11-21 09:04:47,146 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 810 transitions. Word has length 6 [2022-11-21 09:04:47,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:47,147 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 810 transitions. [2022-11-21 09:04:47,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:47,147 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 810 transitions. [2022-11-21 09:04:47,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 09:04:47,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:47,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 09:04:47,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:47,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:04:47,363 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:04:47,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:47,364 INFO L85 PathProgramCache]: Analyzing trace with hash 146734140, now seen corresponding path program 1 times [2022-11-21 09:04:47,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:04:47,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545738602] [2022-11-21 09:04:47,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:47,365 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 [2022-11-21 09:04:47,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:04:47,366 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:04:47,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:47,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 09:04:47,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:47,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:04:47,867 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 25 treesize of output 21 [2022-11-21 09:04:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:47,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:04:47,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545738602] [2022-11-21 09:04:47,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545738602] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:04:47,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:04:47,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-21 09:04:47,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494585280] [2022-11-21 09:04:47,996 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:04:47,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 09:04:47,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:04:47,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 09:04:47,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-21 09:04:47,997 INFO L87 Difference]: Start difference. First operand 264 states and 810 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:49,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:49,225 INFO L93 Difference]: Finished difference Result 815 states and 2513 transitions. [2022-11-21 09:04:49,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:04:49,227 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-21 09:04:49,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:49,233 INFO L225 Difference]: With dead ends: 815 [2022-11-21 09:04:49,233 INFO L226 Difference]: Without dead ends: 815 [2022-11-21 09:04:49,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-11-21 09:04:49,234 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 426 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:49,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 17 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 09:04:49,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2022-11-21 09:04:49,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 314. [2022-11-21 09:04:49,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 293 states have (on average 3.4948805460750854) internal successors, (1024), 313 states have internal predecessors, (1024), 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) [2022-11-21 09:04:49,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 1024 transitions. [2022-11-21 09:04:49,252 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 1024 transitions. Word has length 6 [2022-11-21 09:04:49,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:49,253 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 1024 transitions. [2022-11-21 09:04:49,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:49,253 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 1024 transitions. [2022-11-21 09:04:49,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 09:04:49,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:49,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:49,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:49,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:04:49,469 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:04:49,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:49,469 INFO L85 PathProgramCache]: Analyzing trace with hash 253794113, now seen corresponding path program 1 times [2022-11-21 09:04:49,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:04:49,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586330413] [2022-11-21 09:04:49,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:49,470 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 [2022-11-21 09:04:49,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:04:49,472 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:04:49,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:49,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 09:04:49,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:49,819 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:04:49,820 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 09:04:50,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 09:04:50,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:04:50,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 09:04:50,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:04:50,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586330413] [2022-11-21 09:04:50,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [586330413] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:04:50,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:04:50,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-21 09:04:50,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984255352] [2022-11-21 09:04:50,671 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:04:50,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 09:04:50,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:04:50,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 09:04:50,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-21 09:04:50,673 INFO L87 Difference]: Start difference. First operand 314 states and 1024 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:52,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:52,415 INFO L93 Difference]: Finished difference Result 564 states and 1860 transitions. [2022-11-21 09:04:52,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 09:04:52,417 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-21 09:04:52,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:52,421 INFO L225 Difference]: With dead ends: 564 [2022-11-21 09:04:52,422 INFO L226 Difference]: Without dead ends: 564 [2022-11-21 09:04:52,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-11-21 09:04:52,423 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 283 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:52,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 19 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-21 09:04:52,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-11-21 09:04:52,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 464. [2022-11-21 09:04:52,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 443 states have (on average 3.6478555304740405) internal successors, (1616), 463 states have internal predecessors, (1616), 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) [2022-11-21 09:04:52,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1616 transitions. [2022-11-21 09:04:52,443 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1616 transitions. Word has length 7 [2022-11-21 09:04:52,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:52,444 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 1616 transitions. [2022-11-21 09:04:52,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:52,444 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1616 transitions. [2022-11-21 09:04:52,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 09:04:52,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:52,445 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:52,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:52,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:04:52,660 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:04:52,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:52,660 INFO L85 PathProgramCache]: Analyzing trace with hash 253977843, now seen corresponding path program 1 times [2022-11-21 09:04:52,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:04:52,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491437270] [2022-11-21 09:04:52,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:52,661 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 [2022-11-21 09:04:52,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:04:52,662 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:04:52,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:52,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 09:04:52,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:52,915 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-21 09:04:52,916 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 3 case distinctions, treesize of input 15 treesize of output 29 [2022-11-21 09:04:52,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 09:04:52,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:04:52,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:04:52,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491437270] [2022-11-21 09:04:52,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491437270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:52,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:52,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 09:04:52,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264957556] [2022-11-21 09:04:52,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:52,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:04:52,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:04:52,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:04:52,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:04:52,965 INFO L87 Difference]: Start difference. First operand 464 states and 1616 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:53,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:53,164 INFO L93 Difference]: Finished difference Result 428 states and 1500 transitions. [2022-11-21 09:04:53,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:04:53,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-21 09:04:53,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:53,168 INFO L225 Difference]: With dead ends: 428 [2022-11-21 09:04:53,168 INFO L226 Difference]: Without dead ends: 428 [2022-11-21 09:04:53,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:04:53,169 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:53,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 3 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 09:04:53,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-11-21 09:04:53,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2022-11-21 09:04:53,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 413 states have (on average 3.6319612590799033) internal successors, (1500), 427 states have internal predecessors, (1500), 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) [2022-11-21 09:04:53,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 1500 transitions. [2022-11-21 09:04:53,186 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 1500 transitions. Word has length 7 [2022-11-21 09:04:53,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:53,187 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 1500 transitions. [2022-11-21 09:04:53,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:53,187 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 1500 transitions. [2022-11-21 09:04:53,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 09:04:53,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:53,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:53,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:53,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:04:53,409 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:04:53,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:53,409 INFO L85 PathProgramCache]: Analyzing trace with hash 253977844, now seen corresponding path program 1 times [2022-11-21 09:04:53,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:04:53,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889208311] [2022-11-21 09:04:53,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:53,410 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 [2022-11-21 09:04:53,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:04:53,412 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:04:53,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:53,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 09:04:53,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:53,776 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:04:53,777 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 09:04:54,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:54,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:04:54,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:54,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:04:54,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889208311] [2022-11-21 09:04:54,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889208311] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:04:54,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:04:54,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-21 09:04:54,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667246] [2022-11-21 09:04:54,402 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:04:54,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 09:04:54,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:04:54,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 09:04:54,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:04:54,404 INFO L87 Difference]: Start difference. First operand 428 states and 1500 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:55,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:55,007 INFO L93 Difference]: Finished difference Result 771 states and 2745 transitions. [2022-11-21 09:04:55,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:04:55,008 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-21 09:04:55,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:55,012 INFO L225 Difference]: With dead ends: 771 [2022-11-21 09:04:55,012 INFO L226 Difference]: Without dead ends: 771 [2022-11-21 09:04:55,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-21 09:04:55,013 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 221 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:55,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 9 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 09:04:55,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2022-11-21 09:04:55,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 392. [2022-11-21 09:04:55,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 383 states have (on average 3.6135770234986944) internal successors, (1384), 391 states have internal predecessors, (1384), 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) [2022-11-21 09:04:55,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1384 transitions. [2022-11-21 09:04:55,032 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1384 transitions. Word has length 7 [2022-11-21 09:04:55,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:55,033 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 1384 transitions. [2022-11-21 09:04:55,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:55,033 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1384 transitions. [2022-11-21 09:04:55,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-21 09:04:55,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:55,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:55,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:55,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:04:55,239 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:04:55,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:55,239 INFO L85 PathProgramCache]: Analyzing trace with hash -716626654, now seen corresponding path program 1 times [2022-11-21 09:04:55,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:04:55,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036169974] [2022-11-21 09:04:55,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:55,240 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 [2022-11-21 09:04:55,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:04:55,241 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:04:55,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:55,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 09:04:55,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:55,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:55,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:04:55,800 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 25 treesize of output 21 [2022-11-21 09:04:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:55,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:04:55,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036169974] [2022-11-21 09:04:55,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036169974] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:04:55,908 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:04:55,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-21 09:04:55,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200195746] [2022-11-21 09:04:55,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:04:55,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 09:04:55,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:04:55,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 09:04:55,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-21 09:04:55,910 INFO L87 Difference]: Start difference. First operand 392 states and 1384 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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) [2022-11-21 09:04:57,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:57,012 INFO L93 Difference]: Finished difference Result 1143 states and 4085 transitions. [2022-11-21 09:04:57,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:04:57,013 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-21 09:04:57,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:57,020 INFO L225 Difference]: With dead ends: 1143 [2022-11-21 09:04:57,020 INFO L226 Difference]: Without dead ends: 1143 [2022-11-21 09:04:57,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-11-21 09:04:57,022 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 220 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:57,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 19 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-21 09:04:57,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2022-11-21 09:04:57,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 480. [2022-11-21 09:04:57,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 471 states have (on average 3.8174097664543525) internal successors, (1798), 479 states have internal predecessors, (1798), 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) [2022-11-21 09:04:57,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1798 transitions. [2022-11-21 09:04:57,047 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1798 transitions. Word has length 8 [2022-11-21 09:04:57,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:57,047 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 1798 transitions. [2022-11-21 09:04:57,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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) [2022-11-21 09:04:57,048 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1798 transitions. [2022-11-21 09:04:57,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 09:04:57,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:57,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:04:57,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Ended with exit code 0 [2022-11-21 09:04:57,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:04:57,263 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:04:57,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:57,264 INFO L85 PathProgramCache]: Analyzing trace with hash -740587394, now seen corresponding path program 1 times [2022-11-21 09:04:57,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:04:57,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524379176] [2022-11-21 09:04:57,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:57,265 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 [2022-11-21 09:04:57,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:04:57,266 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:04:57,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:04:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:57,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 09:04:57,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:04:57,620 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:04:57,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 09:04:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 09:04:57,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:04:58,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 09:04:58,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:04:58,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524379176] [2022-11-21 09:04:58,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524379176] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:04:58,564 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:04:58,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-21 09:04:58,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829334663] [2022-11-21 09:04:58,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:04:58,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 09:04:58,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:04:58,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 09:04:58,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-21 09:04:58,565 INFO L87 Difference]: Start difference. First operand 480 states and 1798 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:00,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:05:00,662 INFO L93 Difference]: Finished difference Result 1038 states and 3808 transitions. [2022-11-21 09:05:00,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:05:00,664 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-21 09:05:00,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:05:00,670 INFO L225 Difference]: With dead ends: 1038 [2022-11-21 09:05:00,670 INFO L226 Difference]: Without dead ends: 1038 [2022-11-21 09:05:00,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:05:00,671 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 226 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 09:05:00,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 11 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 09:05:00,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-11-21 09:05:00,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 744. [2022-11-21 09:05:00,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 735 states have (on average 4.136054421768708) internal successors, (3040), 743 states have internal predecessors, (3040), 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) [2022-11-21 09:05:00,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 3040 transitions. [2022-11-21 09:05:00,704 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 3040 transitions. Word has length 9 [2022-11-21 09:05:00,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:05:00,705 INFO L495 AbstractCegarLoop]: Abstraction has 744 states and 3040 transitions. [2022-11-21 09:05:00,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:00,705 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 3040 transitions. [2022-11-21 09:05:00,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 09:05:00,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:05:00,706 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:00,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-21 09:05:00,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:05:00,921 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:05:00,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:00,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1641026940, now seen corresponding path program 2 times [2022-11-21 09:05:00,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:05:00,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644424559] [2022-11-21 09:05:00,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 09:05:00,923 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 [2022-11-21 09:05:00,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:05:00,925 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:05:00,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:05:01,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 09:05:01,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:05:01,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-21 09:05:01,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:05:01,350 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:05:01,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 09:05:01,806 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:01,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:05:03,450 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:03,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:05:03,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644424559] [2022-11-21 09:05:03,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644424559] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:05:03,451 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:05:03,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-11-21 09:05:03,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184523507] [2022-11-21 09:05:03,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:05:03,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 09:05:03,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:05:03,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 09:05:03,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-11-21 09:05:03,453 INFO L87 Difference]: Start difference. First operand 744 states and 3040 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:17,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:05:17,099 INFO L93 Difference]: Finished difference Result 2428 states and 9308 transitions. [2022-11-21 09:05:17,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 09:05:17,103 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-21 09:05:17,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:05:17,114 INFO L225 Difference]: With dead ends: 2428 [2022-11-21 09:05:17,114 INFO L226 Difference]: Without dead ends: 2428 [2022-11-21 09:05:17,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=279, Invalid=651, Unknown=0, NotChecked=0, Total=930 [2022-11-21 09:05:17,115 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 459 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:05:17,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 139 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-11-21 09:05:17,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2022-11-21 09:05:17,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 1238. [2022-11-21 09:05:17,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1229 states have (on average 4.084621643612693) internal successors, (5020), 1237 states have internal predecessors, (5020), 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) [2022-11-21 09:05:17,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 5020 transitions. [2022-11-21 09:05:17,212 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 5020 transitions. Word has length 10 [2022-11-21 09:05:17,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:05:17,212 INFO L495 AbstractCegarLoop]: Abstraction has 1238 states and 5020 transitions. [2022-11-21 09:05:17,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:17,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 5020 transitions. [2022-11-21 09:05:17,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 09:05:17,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:05:17,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:17,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-21 09:05:17,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:05:17,432 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:05:17,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:17,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1477967732, now seen corresponding path program 1 times [2022-11-21 09:05:17,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:05:17,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639997176] [2022-11-21 09:05:17,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:17,433 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 [2022-11-21 09:05:17,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:05:17,435 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:05:17,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:05:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:17,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-21 09:05:17,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:05:17,760 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:05:17,760 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 09:05:18,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:18,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:05:19,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:19,067 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:05:19,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639997176] [2022-11-21 09:05:19,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [639997176] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:05:19,067 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:05:19,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-21 09:05:19,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653607053] [2022-11-21 09:05:19,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:05:19,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 09:05:19,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:05:19,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 09:05:19,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-21 09:05:19,069 INFO L87 Difference]: Start difference. First operand 1238 states and 5020 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:24,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:05:24,604 INFO L93 Difference]: Finished difference Result 2368 states and 9582 transitions. [2022-11-21 09:05:24,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 09:05:24,606 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-21 09:05:24,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:05:24,619 INFO L225 Difference]: With dead ends: 2368 [2022-11-21 09:05:24,619 INFO L226 Difference]: Without dead ends: 2368 [2022-11-21 09:05:24,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-11-21 09:05:24,620 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 203 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-21 09:05:24,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 27 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-21 09:05:24,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2022-11-21 09:05:24,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 1756. [2022-11-21 09:05:24,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1747 states have (on average 4.143102461362336) internal successors, (7238), 1755 states have internal predecessors, (7238), 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) [2022-11-21 09:05:24,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 7238 transitions. [2022-11-21 09:05:24,710 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 7238 transitions. Word has length 10 [2022-11-21 09:05:24,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:05:24,711 INFO L495 AbstractCegarLoop]: Abstraction has 1756 states and 7238 transitions. [2022-11-21 09:05:24,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:05:24,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 7238 transitions. [2022-11-21 09:05:24,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 09:05:24,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:05:24,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:05:24,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Ended with exit code 0 [2022-11-21 09:05:24,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:05:24,931 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:05:24,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:24,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1427644591, now seen corresponding path program 1 times [2022-11-21 09:05:24,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:05:24,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793970061] [2022-11-21 09:05:24,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:24,933 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 [2022-11-21 09:05:24,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:05:24,934 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:05:24,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-21 09:05:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:25,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 09:05:25,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:05:25,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:25,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:05:25,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:25,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:05:25,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793970061] [2022-11-21 09:05:25,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793970061] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:05:25,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:05:25,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-21 09:05:25,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960532559] [2022-11-21 09:05:25,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:05:25,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 09:05:25,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:05:25,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 09:05:25,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-21 09:05:25,927 INFO L87 Difference]: Start difference. First operand 1756 states and 7238 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 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) [2022-11-21 09:05:27,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:05:27,974 INFO L93 Difference]: Finished difference Result 1778 states and 7182 transitions. [2022-11-21 09:05:27,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 09:05:27,976 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-21 09:05:27,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:05:27,986 INFO L225 Difference]: With dead ends: 1778 [2022-11-21 09:05:27,986 INFO L226 Difference]: Without dead ends: 1778 [2022-11-21 09:05:27,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:05:27,987 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 146 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-21 09:05:27,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 37 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-21 09:05:27,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2022-11-21 09:05:28,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1742. [2022-11-21 09:05:28,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1742 states, 1733 states have (on average 4.100403923831506) internal successors, (7106), 1741 states have internal predecessors, (7106), 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) [2022-11-21 09:05:28,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1742 states to 1742 states and 7106 transitions. [2022-11-21 09:05:28,068 INFO L78 Accepts]: Start accepts. Automaton has 1742 states and 7106 transitions. Word has length 11 [2022-11-21 09:05:28,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:05:28,069 INFO L495 AbstractCegarLoop]: Abstraction has 1742 states and 7106 transitions. [2022-11-21 09:05:28,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 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) [2022-11-21 09:05:28,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1742 states and 7106 transitions. [2022-11-21 09:05:28,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 09:05:28,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:05:28,071 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-21 09:05:28,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-21 09:05:28,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:05:28,292 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:05:28,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:28,292 INFO L85 PathProgramCache]: Analyzing trace with hash 417008356, now seen corresponding path program 3 times [2022-11-21 09:05:28,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:05:28,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650882735] [2022-11-21 09:05:28,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 09:05:28,293 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 [2022-11-21 09:05:28,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:05:28,295 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:05:28,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:05:28,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-21 09:05:28,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:05:28,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-21 09:05:28,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:05:28,859 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:05:28,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 09:05:29,560 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:29,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:05:33,907 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:33,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:05:33,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650882735] [2022-11-21 09:05:33,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650882735] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:05:33,908 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:05:33,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-21 09:05:33,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199201437] [2022-11-21 09:05:33,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:05:33,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 09:05:33,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:05:33,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 09:05:33,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-21 09:05:33,912 INFO L87 Difference]: Start difference. First operand 1742 states and 7106 transitions. Second operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 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) [2022-11-21 09:06:06,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:06:06,040 INFO L93 Difference]: Finished difference Result 15536 states and 64250 transitions. [2022-11-21 09:06:06,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 09:06:06,042 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 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 12 [2022-11-21 09:06:06,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:06:06,272 INFO L225 Difference]: With dead ends: 15536 [2022-11-21 09:06:06,272 INFO L226 Difference]: Without dead ends: 15536 [2022-11-21 09:06:06,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 09:06:06,277 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 2990 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 2774 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2990 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 2796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-21 09:06:06,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2990 Valid, 360 Invalid, 2796 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 2774 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2022-11-21 09:06:06,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15536 states. [2022-11-21 09:06:06,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15536 to 1754. [2022-11-21 09:06:06,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1745 states have (on average 4.08595988538682) internal successors, (7130), 1753 states have internal predecessors, (7130), 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) [2022-11-21 09:06:06,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 7130 transitions. [2022-11-21 09:06:06,934 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 7130 transitions. Word has length 12 [2022-11-21 09:06:06,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:06:06,935 INFO L495 AbstractCegarLoop]: Abstraction has 1754 states and 7130 transitions. [2022-11-21 09:06:06,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 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) [2022-11-21 09:06:06,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 7130 transitions. [2022-11-21 09:06:06,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 09:06:06,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:06:06,936 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1] [2022-11-21 09:06:06,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:06:07,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:06:07,147 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:06:07,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:06:07,148 INFO L85 PathProgramCache]: Analyzing trace with hash -402760063, now seen corresponding path program 3 times [2022-11-21 09:06:07,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:06:07,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752471446] [2022-11-21 09:06:07,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 09:06:07,149 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 [2022-11-21 09:06:07,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:06:07,151 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:06:07,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Waiting until timeout for monitored process [2022-11-21 09:06:07,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-21 09:06:07,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:06:07,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 09:06:07,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:06:07,629 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:06:07,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 09:06:07,764 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 15 treesize of output 11 [2022-11-21 09:06:07,984 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 09:06:07,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:06:08,455 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 09:06:08,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:06:08,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752471446] [2022-11-21 09:06:08,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752471446] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:06:08,455 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:06:08,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-21 09:06:08,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706585558] [2022-11-21 09:06:08,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:06:08,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 09:06:08,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:06:08,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 09:06:08,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:06:08,458 INFO L87 Difference]: Start difference. First operand 1754 states and 7130 transitions. Second operand has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:06:11,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:06:11,814 INFO L93 Difference]: Finished difference Result 2373 states and 9409 transitions. [2022-11-21 09:06:11,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 09:06:11,814 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-21 09:06:11,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:06:11,825 INFO L225 Difference]: With dead ends: 2373 [2022-11-21 09:06:11,825 INFO L226 Difference]: Without dead ends: 2373 [2022-11-21 09:06:11,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2022-11-21 09:06:11,827 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 333 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-21 09:06:11,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 112 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-21 09:06:11,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2022-11-21 09:06:11,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2115. [2022-11-21 09:06:11,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2115 states, 2106 states have (on average 4.092592592592593) internal successors, (8619), 2114 states have internal predecessors, (8619), 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) [2022-11-21 09:06:11,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2115 states to 2115 states and 8619 transitions. [2022-11-21 09:06:11,920 INFO L78 Accepts]: Start accepts. Automaton has 2115 states and 8619 transitions. Word has length 12 [2022-11-21 09:06:11,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:06:11,921 INFO L495 AbstractCegarLoop]: Abstraction has 2115 states and 8619 transitions. [2022-11-21 09:06:11,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:06:11,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2115 states and 8619 transitions. [2022-11-21 09:06:11,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 09:06:11,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:06:11,924 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:06:11,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Ended with exit code 0 [2022-11-21 09:06:12,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:06:12,141 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:06:12,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:06:12,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1692653871, now seen corresponding path program 2 times [2022-11-21 09:06:12,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:06:12,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893293108] [2022-11-21 09:06:12,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 09:06:12,142 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 [2022-11-21 09:06:12,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:06:12,144 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:06:12,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:06:12,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 09:06:12,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:06:12,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-21 09:06:12,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:06:12,586 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:06:12,587 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 09:06:13,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:06:13,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:06:15,734 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:06:15,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:06:15,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893293108] [2022-11-21 09:06:15,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893293108] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:06:15,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:06:15,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2022-11-21 09:06:15,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948093006] [2022-11-21 09:06:15,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:06:15,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 09:06:15,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:06:15,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 09:06:15,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-21 09:06:15,737 INFO L87 Difference]: Start difference. First operand 2115 states and 8619 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 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) [2022-11-21 09:06:28,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:06:28,935 INFO L93 Difference]: Finished difference Result 3688 states and 15008 transitions. [2022-11-21 09:06:28,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 09:06:28,938 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 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 12 [2022-11-21 09:06:28,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:06:28,949 INFO L225 Difference]: With dead ends: 3688 [2022-11-21 09:06:28,949 INFO L226 Difference]: Without dead ends: 3688 [2022-11-21 09:06:28,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=179, Invalid=471, Unknown=0, NotChecked=0, Total=650 [2022-11-21 09:06:28,950 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 362 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-21 09:06:28,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 83 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-21 09:06:28,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3688 states. [2022-11-21 09:06:29,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3688 to 2802. [2022-11-21 09:06:29,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2802 states, 2793 states have (on average 4.220551378446116) internal successors, (11788), 2801 states have internal predecessors, (11788), 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) [2022-11-21 09:06:29,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2802 states to 2802 states and 11788 transitions. [2022-11-21 09:06:29,102 INFO L78 Accepts]: Start accepts. Automaton has 2802 states and 11788 transitions. Word has length 12 [2022-11-21 09:06:29,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:06:29,103 INFO L495 AbstractCegarLoop]: Abstraction has 2802 states and 11788 transitions. [2022-11-21 09:06:29,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 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) [2022-11-21 09:06:29,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2802 states and 11788 transitions. [2022-11-21 09:06:29,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 09:06:29,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:06:29,105 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:06:29,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:06:29,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:06:29,319 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:06:29,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:06:29,320 INFO L85 PathProgramCache]: Analyzing trace with hash 410328098, now seen corresponding path program 2 times [2022-11-21 09:06:29,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:06:29,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854037958] [2022-11-21 09:06:29,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 09:06:29,320 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 [2022-11-21 09:06:29,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:06:29,321 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:06:29,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:06:29,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 09:06:29,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:06:29,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-21 09:06:29,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:06:29,698 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:06:29,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 09:06:30,326 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:06:30,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:06:31,972 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:06:31,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:06:31,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854037958] [2022-11-21 09:06:31,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854037958] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:06:31,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:06:31,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-11-21 09:06:31,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745694388] [2022-11-21 09:06:31,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:06:31,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 09:06:31,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:06:31,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 09:06:31,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-11-21 09:06:31,975 INFO L87 Difference]: Start difference. First operand 2802 states and 11788 transitions. Second operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 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) [2022-11-21 09:06:54,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:06:54,393 INFO L93 Difference]: Finished difference Result 4128 states and 16409 transitions. [2022-11-21 09:06:54,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 09:06:54,396 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 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 12 [2022-11-21 09:06:54,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:06:54,409 INFO L225 Difference]: With dead ends: 4128 [2022-11-21 09:06:54,409 INFO L226 Difference]: Without dead ends: 4128 [2022-11-21 09:06:54,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=203, Invalid=727, Unknown=0, NotChecked=0, Total=930 [2022-11-21 09:06:54,410 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 379 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-11-21 09:06:54,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 75 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 15.4s Time] [2022-11-21 09:06:54,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4128 states. [2022-11-21 09:06:54,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4128 to 2866. [2022-11-21 09:06:54,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2857 states have (on average 4.259712985649283) internal successors, (12170), 2865 states have internal predecessors, (12170), 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) [2022-11-21 09:06:54,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 12170 transitions. [2022-11-21 09:06:54,532 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 12170 transitions. Word has length 12 [2022-11-21 09:06:54,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:06:54,533 INFO L495 AbstractCegarLoop]: Abstraction has 2866 states and 12170 transitions. [2022-11-21 09:06:54,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 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) [2022-11-21 09:06:54,533 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 12170 transitions. [2022-11-21 09:06:54,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 09:06:54,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:06:54,535 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2022-11-21 09:06:54,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:06:54,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:06:54,752 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:06:54,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:06:54,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1092461316, now seen corresponding path program 4 times [2022-11-21 09:06:54,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:06:54,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725429869] [2022-11-21 09:06:54,753 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 09:06:54,754 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 [2022-11-21 09:06:54,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:06:54,755 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:06:54,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:06:54,985 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 09:06:54,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:06:54,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-21 09:06:54,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:06:55,203 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:06:55,203 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 09:06:55,964 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:06:55,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:06:58,732 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:06:58,732 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:06:58,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725429869] [2022-11-21 09:06:58,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725429869] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:06:58,733 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:06:58,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-21 09:06:58,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343777904] [2022-11-21 09:06:58,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:06:58,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 09:06:58,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:06:58,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 09:06:58,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2022-11-21 09:06:58,735 INFO L87 Difference]: Start difference. First operand 2866 states and 12170 transitions. Second operand has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 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) [2022-11-21 09:07:34,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:07:34,936 INFO L93 Difference]: Finished difference Result 5234 states and 21800 transitions. [2022-11-21 09:07:34,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 09:07:34,939 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-21 09:07:34,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:07:34,957 INFO L225 Difference]: With dead ends: 5234 [2022-11-21 09:07:34,957 INFO L226 Difference]: Without dead ends: 5234 [2022-11-21 09:07:34,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=515, Invalid=2241, Unknown=0, NotChecked=0, Total=2756 [2022-11-21 09:07:34,958 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 1203 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 3905 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 3946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.9s IncrementalHoareTripleChecker+Time [2022-11-21 09:07:34,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 601 Invalid, 3946 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [41 Valid, 3905 Invalid, 0 Unknown, 0 Unchecked, 23.9s Time] [2022-11-21 09:07:34,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5234 states. [2022-11-21 09:07:35,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5234 to 3698. [2022-11-21 09:07:35,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3698 states, 3689 states have (on average 4.340471672539984) internal successors, (16012), 3697 states have internal predecessors, (16012), 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) [2022-11-21 09:07:35,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 16012 transitions. [2022-11-21 09:07:35,101 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 16012 transitions. Word has length 13 [2022-11-21 09:07:35,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:07:35,102 INFO L495 AbstractCegarLoop]: Abstraction has 3698 states and 16012 transitions. [2022-11-21 09:07:35,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 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) [2022-11-21 09:07:35,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 16012 transitions. [2022-11-21 09:07:35,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 09:07:35,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:07:35,104 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:07:35,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Ended with exit code 0 [2022-11-21 09:07:35,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:07:35,322 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:07:35,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:07:35,323 INFO L85 PathProgramCache]: Analyzing trace with hash 83511308, now seen corresponding path program 2 times [2022-11-21 09:07:35,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:07:35,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888966212] [2022-11-21 09:07:35,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 09:07:35,323 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 [2022-11-21 09:07:35,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:07:35,331 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:07:35,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Waiting until timeout for monitored process [2022-11-21 09:07:35,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 09:07:35,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:07:35,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 09:07:35,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:07:35,819 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:07:35,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 09:07:36,173 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 09:07:36,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:07:36,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:07:36,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888966212] [2022-11-21 09:07:36,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888966212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:07:36,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:07:36,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:07:36,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769919424] [2022-11-21 09:07:36,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:07:36,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:07:36,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:07:36,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:07:36,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:07:36,175 INFO L87 Difference]: Start difference. First operand 3698 states and 16012 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2022-11-21 09:07:36,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:07:36,793 INFO L93 Difference]: Finished difference Result 3940 states and 16398 transitions. [2022-11-21 09:07:36,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:07:36,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 13 [2022-11-21 09:07:36,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:07:36,832 INFO L225 Difference]: With dead ends: 3940 [2022-11-21 09:07:36,832 INFO L226 Difference]: Without dead ends: 3940 [2022-11-21 09:07:36,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:07:36,833 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 60 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 09:07:36,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 6 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 09:07:36,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3940 states. [2022-11-21 09:07:36,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3940 to 3614. [2022-11-21 09:07:36,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3614 states, 3605 states have (on average 4.1536754507628295) internal successors, (14974), 3613 states have internal predecessors, (14974), 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) [2022-11-21 09:07:36,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 14974 transitions. [2022-11-21 09:07:36,962 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 14974 transitions. Word has length 13 [2022-11-21 09:07:36,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:07:36,962 INFO L495 AbstractCegarLoop]: Abstraction has 3614 states and 14974 transitions. [2022-11-21 09:07:36,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2022-11-21 09:07:36,963 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 14974 transitions. [2022-11-21 09:07:36,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 09:07:36,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:07:36,966 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1] [2022-11-21 09:07:36,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-21 09:07:37,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:07:37,183 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:07:37,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:07:37,183 INFO L85 PathProgramCache]: Analyzing trace with hash -777406975, now seen corresponding path program 5 times [2022-11-21 09:07:37,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:07:37,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408618361] [2022-11-21 09:07:37,184 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 09:07:37,184 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 [2022-11-21 09:07:37,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:07:37,186 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:07:37,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:07:37,438 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-21 09:07:37,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:07:37,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-21 09:07:37,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:07:37,639 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:07:37,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 09:07:38,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 10 [2022-11-21 09:07:38,334 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 [2022-11-21 09:07:38,346 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 09:07:38,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:07:38,770 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 8 treesize of output 6 [2022-11-21 09:07:38,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 9 [2022-11-21 09:07:38,881 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-21 09:07:41,853 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:07:41,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:07:41,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408618361] [2022-11-21 09:07:41,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408618361] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:07:41,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:07:41,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2022-11-21 09:07:41,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79068181] [2022-11-21 09:07:41,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:07:41,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 09:07:41,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:07:41,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 09:07:41,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2022-11-21 09:07:41,856 INFO L87 Difference]: Start difference. First operand 3614 states and 14974 transitions. Second operand has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 states have internal predecessors, (26), 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) [2022-11-21 09:07:53,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:07:53,260 INFO L93 Difference]: Finished difference Result 4566 states and 18346 transitions. [2022-11-21 09:07:53,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 09:07:53,263 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-21 09:07:53,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:07:53,276 INFO L225 Difference]: With dead ends: 4566 [2022-11-21 09:07:53,276 INFO L226 Difference]: Without dead ends: 4566 [2022-11-21 09:07:53,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=224, Invalid=966, Unknown=0, NotChecked=0, Total=1190 [2022-11-21 09:07:53,277 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 839 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 1971 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:07:53,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 283 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1971 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-11-21 09:07:53,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4566 states. [2022-11-21 09:07:53,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4566 to 3800. [2022-11-21 09:07:53,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3800 states, 3791 states have (on average 4.191242416249011) internal successors, (15889), 3799 states have internal predecessors, (15889), 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) [2022-11-21 09:07:53,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3800 states to 3800 states and 15889 transitions. [2022-11-21 09:07:53,371 INFO L78 Accepts]: Start accepts. Automaton has 3800 states and 15889 transitions. Word has length 13 [2022-11-21 09:07:53,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:07:53,371 INFO L495 AbstractCegarLoop]: Abstraction has 3800 states and 15889 transitions. [2022-11-21 09:07:53,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 states have internal predecessors, (26), 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) [2022-11-21 09:07:53,372 INFO L276 IsEmpty]: Start isEmpty. Operand 3800 states and 15889 transitions. [2022-11-21 09:07:53,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-21 09:07:53,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:07:53,374 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:07:53,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:07:53,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:07:53,592 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:07:53,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:07:53,592 INFO L85 PathProgramCache]: Analyzing trace with hash -2091453204, now seen corresponding path program 3 times [2022-11-21 09:07:53,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:07:53,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449230369] [2022-11-21 09:07:53,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 09:07:53,593 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 [2022-11-21 09:07:53,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:07:53,595 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:07:53,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-21 09:07:53,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-21 09:07:53,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:07:53,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 09:07:53,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:07:54,037 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:07:54,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 09:07:54,534 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 09:07:54,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:07:56,603 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 09:07:56,603 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:07:56,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449230369] [2022-11-21 09:07:56,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449230369] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:07:56,603 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:07:56,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-21 09:07:56,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461200868] [2022-11-21 09:07:56,604 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:07:56,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 09:07:56,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:07:56,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 09:07:56,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-21 09:07:56,605 INFO L87 Difference]: Start difference. First operand 3800 states and 15889 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 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) [2022-11-21 09:07:58,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:07:58,521 INFO L93 Difference]: Finished difference Result 4208 states and 17535 transitions. [2022-11-21 09:07:58,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:07:58,523 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-21 09:07:58,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:07:58,537 INFO L225 Difference]: With dead ends: 4208 [2022-11-21 09:07:58,537 INFO L226 Difference]: Without dead ends: 4208 [2022-11-21 09:07:58,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:07:58,539 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 180 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 09:07:58,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 24 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 09:07:58,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4208 states. [2022-11-21 09:07:58,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4208 to 2175. [2022-11-21 09:07:58,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2175 states, 2170 states have (on average 4.04516129032258) internal successors, (8778), 2174 states have internal predecessors, (8778), 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) [2022-11-21 09:07:58,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 8778 transitions. [2022-11-21 09:07:58,637 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 8778 transitions. Word has length 14 [2022-11-21 09:07:58,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:07:58,638 INFO L495 AbstractCegarLoop]: Abstraction has 2175 states and 8778 transitions. [2022-11-21 09:07:58,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 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) [2022-11-21 09:07:58,638 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 8778 transitions. [2022-11-21 09:07:58,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-21 09:07:58,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:07:58,641 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:07:58,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-21 09:07:58,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:07:58,855 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:07:58,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:07:58,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1106119166, now seen corresponding path program 3 times [2022-11-21 09:07:58,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:07:58,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776659857] [2022-11-21 09:07:58,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 09:07:58,856 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 [2022-11-21 09:07:58,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:07:58,857 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:07:58,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:07:59,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-21 09:07:59,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:07:59,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 09:07:59,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:07:59,366 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:07:59,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 09:07:59,484 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 [2022-11-21 09:07:59,799 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 09:07:59,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:08:00,465 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 09:08:00,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:08:00,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776659857] [2022-11-21 09:08:00,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776659857] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:08:00,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:08:00,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-21 09:08:00,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210294910] [2022-11-21 09:08:00,466 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:08:00,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 09:08:00,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:08:00,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 09:08:00,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-21 09:08:00,467 INFO L87 Difference]: Start difference. First operand 2175 states and 8778 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 states have internal predecessors, (22), 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) [2022-11-21 09:08:05,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:08:05,355 INFO L93 Difference]: Finished difference Result 2231 states and 8627 transitions. [2022-11-21 09:08:05,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 09:08:05,356 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-21 09:08:05,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:08:05,363 INFO L225 Difference]: With dead ends: 2231 [2022-11-21 09:08:05,363 INFO L226 Difference]: Without dead ends: 2231 [2022-11-21 09:08:05,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2022-11-21 09:08:05,364 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 334 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:08:05,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 53 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-21 09:08:05,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2022-11-21 09:08:05,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2105. [2022-11-21 09:08:05,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2105 states, 2100 states have (on average 3.990952380952381) internal successors, (8381), 2104 states have internal predecessors, (8381), 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) [2022-11-21 09:08:05,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2105 states to 2105 states and 8381 transitions. [2022-11-21 09:08:05,429 INFO L78 Accepts]: Start accepts. Automaton has 2105 states and 8381 transitions. Word has length 14 [2022-11-21 09:08:05,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:08:05,429 INFO L495 AbstractCegarLoop]: Abstraction has 2105 states and 8381 transitions. [2022-11-21 09:08:05,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 states have internal predecessors, (22), 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) [2022-11-21 09:08:05,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2105 states and 8381 transitions. [2022-11-21 09:08:05,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 09:08:05,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:08:05,433 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:08:05,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-21 09:08:05,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:08:05,651 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:08:05,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:08:05,651 INFO L85 PathProgramCache]: Analyzing trace with hash 2048099234, now seen corresponding path program 4 times [2022-11-21 09:08:05,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:08:05,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386345721] [2022-11-21 09:08:05,652 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 09:08:05,653 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 [2022-11-21 09:08:05,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:08:05,654 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:08:05,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:08:05,879 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 09:08:05,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:08:05,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-21 09:08:05,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:08:06,108 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:08:06,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 09:08:07,170 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:08:07,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:08:10,529 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:08:10,530 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:08:10,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386345721] [2022-11-21 09:08:10,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386345721] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:08:10,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:08:10,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-21 09:08:10,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284977301] [2022-11-21 09:08:10,531 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:08:10,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 09:08:10,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:08:10,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 09:08:10,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2022-11-21 09:08:10,533 INFO L87 Difference]: Start difference. First operand 2105 states and 8381 transitions. Second operand has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 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) [2022-11-21 09:08:49,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:08:49,066 INFO L93 Difference]: Finished difference Result 4357 states and 16203 transitions. [2022-11-21 09:08:49,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 09:08:49,067 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 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 15 [2022-11-21 09:08:49,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:08:49,079 INFO L225 Difference]: With dead ends: 4357 [2022-11-21 09:08:49,079 INFO L226 Difference]: Without dead ends: 4357 [2022-11-21 09:08:49,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=520, Invalid=2236, Unknown=0, NotChecked=0, Total=2756 [2022-11-21 09:08:49,080 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1208 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 3257 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 3294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2022-11-21 09:08:49,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1208 Valid, 248 Invalid, 3294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3257 Invalid, 0 Unknown, 0 Unchecked, 22.3s Time] [2022-11-21 09:08:49,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4357 states. [2022-11-21 09:08:49,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4357 to 2975. [2022-11-21 09:08:49,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2975 states, 2970 states have (on average 4.22996632996633) internal successors, (12563), 2974 states have internal predecessors, (12563), 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) [2022-11-21 09:08:49,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2975 states to 2975 states and 12563 transitions. [2022-11-21 09:08:49,170 INFO L78 Accepts]: Start accepts. Automaton has 2975 states and 12563 transitions. Word has length 15 [2022-11-21 09:08:49,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:08:49,170 INFO L495 AbstractCegarLoop]: Abstraction has 2975 states and 12563 transitions. [2022-11-21 09:08:49,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 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) [2022-11-21 09:08:49,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2975 states and 12563 transitions. [2022-11-21 09:08:49,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 09:08:49,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:08:49,173 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:08:49,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:08:49,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:08:49,387 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:08:49,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:08:49,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1847689598, now seen corresponding path program 5 times [2022-11-21 09:08:49,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:08:49,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706545781] [2022-11-21 09:08:49,388 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 09:08:49,388 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 [2022-11-21 09:08:49,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:08:49,389 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:08:49,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-21 09:08:49,651 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-21 09:08:49,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:08:49,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-21 09:08:49,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:08:49,875 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:08:49,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 09:08:50,536 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 09:08:50,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:08:50,840 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 8 treesize of output 6 [2022-11-21 09:08:50,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 9 [2022-11-21 09:08:50,887 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-21 09:08:53,831 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:08:53,831 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:08:53,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706545781] [2022-11-21 09:08:53,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706545781] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:08:53,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:08:53,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2022-11-21 09:08:53,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289039471] [2022-11-21 09:08:53,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:08:53,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 09:08:53,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:08:53,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 09:08:53,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2022-11-21 09:08:53,833 INFO L87 Difference]: Start difference. First operand 2975 states and 12563 transitions. Second operand has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 21 states have internal predecessors, (30), 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) [2022-11-21 09:09:03,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:03,498 INFO L93 Difference]: Finished difference Result 3285 states and 12947 transitions. [2022-11-21 09:09:03,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 09:09:03,501 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 21 states have internal predecessors, (30), 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 15 [2022-11-21 09:09:03,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:09:03,511 INFO L225 Difference]: With dead ends: 3285 [2022-11-21 09:09:03,511 INFO L226 Difference]: Without dead ends: 3285 [2022-11-21 09:09:03,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=197, Invalid=859, Unknown=0, NotChecked=0, Total=1056 [2022-11-21 09:09:03,512 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 734 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 1646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-21 09:09:03,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 230 Invalid, 1646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-21 09:09:03,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3285 states. [2022-11-21 09:09:03,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3285 to 2841. [2022-11-21 09:09:03,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2841 states, 2836 states have (on average 4.194992947813822) internal successors, (11897), 2840 states have internal predecessors, (11897), 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) [2022-11-21 09:09:03,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 11897 transitions. [2022-11-21 09:09:03,574 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 11897 transitions. Word has length 15 [2022-11-21 09:09:03,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:09:03,574 INFO L495 AbstractCegarLoop]: Abstraction has 2841 states and 11897 transitions. [2022-11-21 09:09:03,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 21 states have internal predecessors, (30), 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) [2022-11-21 09:09:03,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 11897 transitions. [2022-11-21 09:09:03,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-21 09:09:03,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:09:03,578 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 1, 1, 1, 1, 1] [2022-11-21 09:09:03,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:03,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:09:03,795 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:09:03,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:03,796 INFO L85 PathProgramCache]: Analyzing trace with hash -2132150564, now seen corresponding path program 6 times [2022-11-21 09:09:03,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:09:03,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873989104] [2022-11-21 09:09:03,796 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 09:09:03,796 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 [2022-11-21 09:09:03,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:09:03,798 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:09:03,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:09:04,487 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-21 09:09:04,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:09:04,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-21 09:09:04,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:04,738 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:09:04,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 09:09:04,951 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 15 treesize of output 11 [2022-11-21 09:09:05,378 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 09:09:05,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:09:06,620 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 09:09:06,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:09:06,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873989104] [2022-11-21 09:09:06,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873989104] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:09:06,621 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:09:06,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-11-21 09:09:06,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759530145] [2022-11-21 09:09:06,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:09:06,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 09:09:06,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:09:06,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 09:09:06,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2022-11-21 09:09:06,622 INFO L87 Difference]: Start difference. First operand 2841 states and 11897 transitions. Second operand has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 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) [2022-11-21 09:09:16,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:16,642 INFO L93 Difference]: Finished difference Result 4100 states and 16592 transitions. [2022-11-21 09:09:16,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 09:09:16,644 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-21 09:09:16,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:09:16,656 INFO L225 Difference]: With dead ends: 4100 [2022-11-21 09:09:16,656 INFO L226 Difference]: Without dead ends: 4100 [2022-11-21 09:09:16,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=406, Invalid=1574, Unknown=0, NotChecked=0, Total=1980 [2022-11-21 09:09:16,658 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 666 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 2722 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 2753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-21 09:09:16,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 475 Invalid, 2753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2722 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-21 09:09:16,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4100 states. [2022-11-21 09:09:16,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4100 to 3664. [2022-11-21 09:09:16,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3664 states, 3659 states have (on average 4.183110139382345) internal successors, (15306), 3663 states have internal predecessors, (15306), 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) [2022-11-21 09:09:16,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 15306 transitions. [2022-11-21 09:09:16,782 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 15306 transitions. Word has length 19 [2022-11-21 09:09:16,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:09:16,782 INFO L495 AbstractCegarLoop]: Abstraction has 3664 states and 15306 transitions. [2022-11-21 09:09:16,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 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) [2022-11-21 09:09:16,783 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 15306 transitions. [2022-11-21 09:09:16,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-21 09:09:16,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:09:16,791 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 1, 1, 1, 1, 1] [2022-11-21 09:09:16,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:09:17,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:09:17,008 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:09:17,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:17,008 INFO L85 PathProgramCache]: Analyzing trace with hash -407556260, now seen corresponding path program 7 times [2022-11-21 09:09:17,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:09:17,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617854222] [2022-11-21 09:09:17,009 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-21 09:09:17,009 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 [2022-11-21 09:09:17,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:09:17,010 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:09:17,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:09:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:17,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-21 09:09:17,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:17,464 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:09:17,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 09:09:18,794 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 51 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 09:09:18,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:09:25,620 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:25,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:09:25,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617854222] [2022-11-21 09:09:25,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617854222] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:09:25,621 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:09:25,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 35 [2022-11-21 09:09:25,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311508978] [2022-11-21 09:09:25,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:09:25,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-21 09:09:25,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:09:25,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-21 09:09:25,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1013, Unknown=0, NotChecked=0, Total=1260 [2022-11-21 09:09:25,623 INFO L87 Difference]: Start difference. First operand 3664 states and 15306 transitions. Second operand has 36 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 35 states have internal predecessors, (40), 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) [2022-11-21 09:10:09,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:10:32,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:10:32,256 INFO L93 Difference]: Finished difference Result 10044 states and 39948 transitions. [2022-11-21 09:10:32,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-11-21 09:10:32,260 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-21 09:10:32,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:10:32,285 INFO L225 Difference]: With dead ends: 10044 [2022-11-21 09:10:32,285 INFO L226 Difference]: Without dead ends: 10044 [2022-11-21 09:10:32,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1989 ImplicationChecksByTransitivity, 31.5s TimeCoverageRelationStatistics Valid=1663, Invalid=6893, Unknown=0, NotChecked=0, Total=8556 [2022-11-21 09:10:32,287 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 2381 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 9283 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2381 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 9373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 9283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.7s IncrementalHoareTripleChecker+Time [2022-11-21 09:10:32,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2381 Valid, 1543 Invalid, 9373 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 9283 Invalid, 0 Unknown, 0 Unchecked, 41.7s Time] [2022-11-21 09:10:32,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10044 states. [2022-11-21 09:10:32,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10044 to 5360. [2022-11-21 09:10:32,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5360 states, 5355 states have (on average 4.205042016806723) internal successors, (22518), 5359 states have internal predecessors, (22518), 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) [2022-11-21 09:10:32,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5360 states to 5360 states and 22518 transitions. [2022-11-21 09:10:32,491 INFO L78 Accepts]: Start accepts. Automaton has 5360 states and 22518 transitions. Word has length 20 [2022-11-21 09:10:32,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:10:32,493 INFO L495 AbstractCegarLoop]: Abstraction has 5360 states and 22518 transitions. [2022-11-21 09:10:32,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 35 states have internal predecessors, (40), 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) [2022-11-21 09:10:32,493 INFO L276 IsEmpty]: Start isEmpty. Operand 5360 states and 22518 transitions. [2022-11-21 09:10:32,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-21 09:10:32,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:10:32,504 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:10:32,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-21 09:10:32,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:10:32,719 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:10:32,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:10:32,719 INFO L85 PathProgramCache]: Analyzing trace with hash 835274274, now seen corresponding path program 6 times [2022-11-21 09:10:32,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:10:32,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545191969] [2022-11-21 09:10:32,720 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 09:10:32,720 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 [2022-11-21 09:10:32,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:10:32,721 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:10:32,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:10:33,477 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-21 09:10:33,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:10:33,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-21 09:10:33,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:10:33,655 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:10:33,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 09:10:34,867 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 [2022-11-21 09:10:34,878 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:10:34,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:10:35,078 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 8 treesize of output 6 [2022-11-21 09:10:35,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 9 [2022-11-21 09:10:35,117 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-21 09:10:41,495 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:10:41,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:10:41,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545191969] [2022-11-21 09:10:41,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545191969] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:10:41,495 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:10:41,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 34 [2022-11-21 09:10:41,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392246605] [2022-11-21 09:10:41,496 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:10:41,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-21 09:10:41,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:10:41,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-21 09:10:41,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=977, Unknown=0, NotChecked=0, Total=1190 [2022-11-21 09:10:41,498 INFO L87 Difference]: Start difference. First operand 5360 states and 22518 transitions. Second operand has 35 states, 35 states have (on average 1.2) internal successors, (42), 34 states have internal predecessors, (42), 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) [2022-11-21 09:11:38,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:11:38,209 INFO L93 Difference]: Finished difference Result 11613 states and 42673 transitions. [2022-11-21 09:11:38,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-21 09:11:38,212 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.2) internal successors, (42), 34 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-21 09:11:38,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:11:38,241 INFO L225 Difference]: With dead ends: 11613 [2022-11-21 09:11:38,241 INFO L226 Difference]: Without dead ends: 11613 [2022-11-21 09:11:38,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 31.0s TimeCoverageRelationStatistics Valid=788, Invalid=3634, Unknown=0, NotChecked=0, Total=4422 [2022-11-21 09:11:38,242 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2016 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 4814 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2016 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 4850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 4814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.8s IncrementalHoareTripleChecker+Time [2022-11-21 09:11:38,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2016 Valid, 641 Invalid, 4850 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [36 Valid, 4814 Invalid, 0 Unknown, 0 Unchecked, 31.8s Time] [2022-11-21 09:11:38,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11613 states. [2022-11-21 09:11:38,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11613 to 5485. [2022-11-21 09:11:38,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5485 states, 5480 states have (on average 4.187773722627737) internal successors, (22949), 5484 states have internal predecessors, (22949), 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) [2022-11-21 09:11:38,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5485 states to 5485 states and 22949 transitions. [2022-11-21 09:11:38,565 INFO L78 Accepts]: Start accepts. Automaton has 5485 states and 22949 transitions. Word has length 21 [2022-11-21 09:11:38,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:11:38,565 INFO L495 AbstractCegarLoop]: Abstraction has 5485 states and 22949 transitions. [2022-11-21 09:11:38,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.2) internal successors, (42), 34 states have internal predecessors, (42), 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) [2022-11-21 09:11:38,566 INFO L276 IsEmpty]: Start isEmpty. Operand 5485 states and 22949 transitions. [2022-11-21 09:11:38,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-21 09:11:38,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:11:38,576 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 1, 1, 1, 1, 1] [2022-11-21 09:11:38,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-21 09:11:38,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:11:38,792 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:11:38,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:11:38,792 INFO L85 PathProgramCache]: Analyzing trace with hash -271589215, now seen corresponding path program 8 times [2022-11-21 09:11:38,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:11:38,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379370233] [2022-11-21 09:11:38,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 09:11:38,793 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 [2022-11-21 09:11:38,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:11:38,795 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:11:38,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:11:39,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 09:11:39,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:11:39,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-21 09:11:39,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:11:39,240 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:11:39,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 09:11:40,611 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:11:40,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:11:47,275 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:11:47,275 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:11:47,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379370233] [2022-11-21 09:11:47,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379370233] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:11:47,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:11:47,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 40 [2022-11-21 09:11:47,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705678974] [2022-11-21 09:11:47,276 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:11:47,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-21 09:11:47,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:11:47,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-21 09:11:47,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=1332, Unknown=0, NotChecked=0, Total=1722 [2022-11-21 09:11:47,278 INFO L87 Difference]: Start difference. First operand 5485 states and 22949 transitions. Second operand has 42 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 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) [2022-11-21 09:13:06,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:13:06,445 INFO L93 Difference]: Finished difference Result 14353 states and 58005 transitions. [2022-11-21 09:13:06,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-11-21 09:13:06,447 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 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 22 [2022-11-21 09:13:06,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:13:06,494 INFO L225 Difference]: With dead ends: 14353 [2022-11-21 09:13:06,494 INFO L226 Difference]: Without dead ends: 14353 [2022-11-21 09:13:06,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2843 ImplicationChecksByTransitivity, 33.8s TimeCoverageRelationStatistics Valid=2702, Invalid=7398, Unknown=0, NotChecked=0, Total=10100 [2022-11-21 09:13:06,496 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 3441 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 10950 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3441 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 11086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 10950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.9s IncrementalHoareTripleChecker+Time [2022-11-21 09:13:06,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3441 Valid, 1703 Invalid, 11086 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [136 Valid, 10950 Invalid, 0 Unknown, 0 Unchecked, 51.9s Time] [2022-11-21 09:13:06,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14353 states. [2022-11-21 09:13:06,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14353 to 8389. [2022-11-21 09:13:06,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8389 states, 8384 states have (on average 4.342915076335878) internal successors, (36411), 8388 states have internal predecessors, (36411), 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) [2022-11-21 09:13:06,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8389 states to 8389 states and 36411 transitions. [2022-11-21 09:13:06,890 INFO L78 Accepts]: Start accepts. Automaton has 8389 states and 36411 transitions. Word has length 22 [2022-11-21 09:13:06,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:13:06,905 INFO L495 AbstractCegarLoop]: Abstraction has 8389 states and 36411 transitions. [2022-11-21 09:13:06,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 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) [2022-11-21 09:13:06,909 INFO L276 IsEmpty]: Start isEmpty. Operand 8389 states and 36411 transitions. [2022-11-21 09:13:06,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-21 09:13:06,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:13:06,927 INFO L195 NwaCegarLoop]: trace histogram [11, 5, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:13:06,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:13:07,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:13:07,128 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:13:07,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:13:07,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1113816830, now seen corresponding path program 7 times [2022-11-21 09:13:07,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:13:07,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64613128] [2022-11-21 09:13:07,129 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-21 09:13:07,129 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 [2022-11-21 09:13:07,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:13:07,131 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:13:07,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 09:13:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:13:07,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-21 09:13:07,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:13:07,537 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 09:13:07,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 09:13:08,849 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 27 proven. 51 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 09:13:08,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:13:14,212 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:13:14,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:13:14,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64613128] [2022-11-21 09:13:14,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64613128] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:13:14,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:13:14,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 36 [2022-11-21 09:13:14,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548905924] [2022-11-21 09:13:14,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:13:14,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-21 09:13:14,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:13:14,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-21 09:13:14,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1135, Unknown=0, NotChecked=0, Total=1332 [2022-11-21 09:13:14,214 INFO L87 Difference]: Start difference. First operand 8389 states and 36411 transitions. Second operand has 37 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 36 states have internal predecessors, (45), 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) [2022-11-21 09:15:00,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:15:00,461 INFO L93 Difference]: Finished difference Result 17079 states and 66469 transitions. [2022-11-21 09:15:00,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-11-21 09:15:00,465 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 36 states have internal predecessors, (45), 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 23 [2022-11-21 09:15:00,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:15:00,570 INFO L225 Difference]: With dead ends: 17079 [2022-11-21 09:15:00,570 INFO L226 Difference]: Without dead ends: 17079 [2022-11-21 09:15:00,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2390 ImplicationChecksByTransitivity, 46.0s TimeCoverageRelationStatistics Valid=1945, Invalid=8155, Unknown=0, NotChecked=0, Total=10100 [2022-11-21 09:15:00,575 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 3954 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 11264 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3954 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 11383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 11264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.3s IncrementalHoareTripleChecker+Time [2022-11-21 09:15:00,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3954 Valid, 836 Invalid, 11383 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [119 Valid, 11264 Invalid, 0 Unknown, 0 Unchecked, 65.3s Time] [2022-11-21 09:15:00,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17079 states. [2022-11-21 09:15:00,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17079 to 8379. [2022-11-21 09:15:00,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8379 states, 8374 states have (on average 4.364819679961786) internal successors, (36551), 8378 states have internal predecessors, (36551), 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) [2022-11-21 09:15:00,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 36551 transitions. [2022-11-21 09:15:00,998 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 36551 transitions. Word has length 23 [2022-11-21 09:15:00,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:15:00,998 INFO L495 AbstractCegarLoop]: Abstraction has 8379 states and 36551 transitions. [2022-11-21 09:15:00,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 36 states have internal predecessors, (45), 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) [2022-11-21 09:15:00,998 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 36551 transitions. [2022-11-21 09:15:01,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-21 09:15:01,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:15:01,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:01,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-21 09:15:01,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:15:01,233 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 09:15:01,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:01,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1428928247, now seen corresponding path program 1 times [2022-11-21 09:15:01,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:15:01,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370047420] [2022-11-21 09:15:01,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:01,233 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 [2022-11-21 09:15:01,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:15:01,234 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 09:15:01,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6958fedf-fb9d-4e0b-bfc5-ec2b9220e79e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-21 09:15:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-21 09:15:01,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:15:01,604 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 60 treesize of output 58 [2022-11-21 09:15:01,881 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 6 treesize of output 5 [2022-11-21 09:15:02,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:15:02,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 135 treesize of output 115 [2022-11-21 09:15:02,762 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 135 treesize of output 115 [2022-11-21 09:15:03,757 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 284 treesize of output 276 [2022-11-21 09:15:03,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:15:03,767 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 09:15:03,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:15:03,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:15:03,776 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 09:15:03,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:15:03,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:15:03,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:15:03,783 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 09:15:03,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:15:03,786 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 09:15:03,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 276 treesize of output 138 [2022-11-21 09:15:03,794 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 138 treesize of output 130 [2022-11-21 09:15:04,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:15:04,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:15:08,319 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 710 treesize of output 702 [2022-11-21 09:15:08,331 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 702 treesize of output 694 [2022-11-21 09:15:11,087 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse19 (bvmul (_ bv4 32) c_~M~0))) (let ((.cse13 (bvsgt c_~min2~0 c_~min3~0)) (.cse7 (bvadd .cse19 (_ bv3 32) c_~A~0.offset)) (.cse8 (bvadd .cse19 (_ bv2 32) c_~A~0.offset)) (.cse9 (bvadd .cse19 c_~A~0.offset (_ bv1 32))) (.cse10 (bvadd .cse19 c_~A~0.offset)) (.cse5 (let ((.cse22 (select |c_#memory_int| c_~A~0.base))) (concat (concat (concat (select .cse22 (bvadd (_ bv3 32) c_~A~0.offset)) (select .cse22 (bvadd (_ bv2 32) c_~A~0.offset))) (select .cse22 (bvadd c_~A~0.offset (_ bv1 32)))) (select .cse22 c_~A~0.offset))))) (let ((.cse1 (not (bvule c_~A~0.offset (bvadd (_ bv4 32) c_~A~0.offset)))) (.cse0 (bvsgt c_~min1~0 .cse5)) (.cse3 (forall ((v_prenex_2 (Array (_ BitVec 32) (_ BitVec 8))) (v_prenex_1 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse20 (let ((.cse21 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_prenex_2) |c_ULTIMATE.start_main_~#t3~0#1.base| v_prenex_1) c_~A~0.base))) (concat (concat (concat (select .cse21 .cse7) (select .cse21 .cse8)) (select .cse21 .cse9)) (select .cse21 .cse10))))) (or (not (bvsgt c_~min3~0 .cse20)) (bvsgt c_~min2~0 .cse20))))) (.cse11 (not (bvule .cse10 (bvadd .cse19 (_ bv4 32) c_~A~0.offset)))) (.cse12 (not .cse13)) (.cse14 (forall ((v_prenex_4 (Array (_ BitVec 32) (_ BitVec 8))) (v_prenex_3 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsgt c_~min3~0 (let ((.cse18 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_prenex_4) |c_ULTIMATE.start_main_~#t3~0#1.base| v_prenex_3) c_~A~0.base))) (concat (concat (concat (select .cse18 .cse7) (select .cse18 .cse8)) (select .cse18 .cse9)) (select .cse18 .cse10))))))) (and (or (not .cse0) .cse1 (let ((.cse2 (= c_~min2~0 .cse5))) (and (or (and (or .cse2 .cse3) (forall ((v_ArrVal_1318 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1317 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse4 (let ((.cse6 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1317) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1318) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse7) (select .cse6 .cse8)) (select .cse6 .cse9)) (select .cse6 .cse10))))) (or (not (bvsgt c_~min3~0 .cse4)) (not (bvsgt c_~min2~0 .cse4)) (= .cse4 .cse5))))) .cse11) (or .cse11 (and (or .cse12 (= c_~min3~0 .cse5)) (or .cse2 .cse13)) .cse14)))) (or .cse1 .cse0 (let ((.cse15 (= c_~min2~0 c_~min1~0))) (and (or .cse11 (and (or .cse15 .cse3) (forall ((v_ArrVal_1318 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1317 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse16 (let ((.cse17 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1317) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1318) c_~A~0.base))) (concat (concat (concat (select .cse17 .cse7) (select .cse17 .cse8)) (select .cse17 .cse9)) (select .cse17 .cse10))))) (or (not (bvsgt c_~min3~0 .cse16)) (= .cse16 c_~min1~0) (not (bvsgt c_~min2~0 .cse16))))))) (or .cse11 (and (or .cse13 .cse15) (or .cse12 (= c_~min3~0 c_~min1~0))) .cse14)))))))) is different from false [2022-11-21 09:15:12,282 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-21 09:15:12,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 29180 treesize of output 26169 [2022-11-21 09:15:12,608 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 09:15:12,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 26128 treesize of output 24400 [2022-11-21 09:15:13,469 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-21 09:15:13,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 24400 treesize of output 23459 [2022-11-21 09:15:13,626 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 09:15:13,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 23418 treesize of output 22554 [2022-11-21 09:15:13,848 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 09:15:13,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22554 treesize of output 21690 [2022-11-21 09:15:14,030 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 09:15:14,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 21690 treesize of output 21258 [2022-11-21 09:15:14,268 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 09:15:14,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 21258 treesize of output 21042 [2022-11-21 09:15:14,423 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 09:15:14,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 21042 treesize of output 20934 [2022-11-21 09:15:14,580 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 09:15:14,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20934 treesize of output 18342 [2022-11-21 09:15:15,280 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-21 09:15:15,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 18342 treesize of output 17073 [2022-11-21 09:15:15,431 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 09:15:15,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17032 treesize of output 15736 [2022-11-21 09:15:15,594 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 09:15:15,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15736 treesize of output 14008 [2022-11-21 09:15:15,818 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 09:15:15,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14008 treesize of output 13144 [2022-11-21 09:15:16,011 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 09:15:16,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13144 treesize of output 12280 [2022-11-21 09:15:16,179 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 09:15:16,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12280 treesize of output 11848