./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 --- 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 16:42:03,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:42:03,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:42:03,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:42:03,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:42:03,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:42:03,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:42:03,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:42:03,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:42:03,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:42:03,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:42:03,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:42:03,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:42:03,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:42:03,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:42:03,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:42:03,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:42:03,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:42:03,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:42:03,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:42:03,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:42:03,183 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:42:03,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:42:03,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:42:03,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:42:03,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:42:03,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:42:03,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:42:03,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:42:03,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:42:03,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:42:03,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:42:03,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:42:03,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:42:03,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:42:03,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:42:03,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:42:03,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:42:03,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:42:03,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:42:03,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:42:03,218 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-21 16:42:03,261 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:42:03,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:42:03,262 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:42:03,263 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:42:03,264 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:42:03,264 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:42:03,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:42:03,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:42:03,265 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:42:03,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:42:03,267 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:42:03,267 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:42:03,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:42:03,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:42:03,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:42:03,268 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 16:42:03,268 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 16:42:03,269 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 16:42:03,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:42:03,269 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 16:42:03,269 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:42:03,269 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:42:03,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:42:03,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:42:03,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:42:03,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:42:03,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:42:03,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:42:03,272 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:42:03,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:42:03,272 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_964ef80b-bb21-4188-ba9f-a383dc98ca03/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 [2022-11-21 16:42:03,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:42:03,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:42:03,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:42:03,670 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:42:03,670 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:42:03,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2022-11-21 16:42:06,780 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:42:06,998 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:42:06,999 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2022-11-21 16:42:07,007 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/data/ea77172ff/3116cb4b3b1944048e8617a08b963996/FLAGfb518dbae [2022-11-21 16:42:07,022 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/data/ea77172ff/3116cb4b3b1944048e8617a08b963996 [2022-11-21 16:42:07,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:42:07,026 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:42:07,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:42:07,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:42:07,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:42:07,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:42:07" (1/1) ... [2022-11-21 16:42:07,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445039bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:07, skipping insertion in model container [2022-11-21 16:42:07,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:42:07" (1/1) ... [2022-11-21 16:42:07,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:42:07,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:42:07,248 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_964ef80b-bb21-4188-ba9f-a383dc98ca03/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c[2618,2631] [2022-11-21 16:42:07,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:42:07,271 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 16:42:07,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@41993ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:07, skipping insertion in model container [2022-11-21 16:42:07,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:42:07,272 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-21 16:42:07,274 INFO L158 Benchmark]: Toolchain (without parser) took 246.99ms. Allocated memory is still 142.6MB. Free memory was 108.4MB in the beginning and 98.4MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 16:42:07,275 INFO L158 Benchmark]: CDTParser took 0.62ms. Allocated memory is still 104.9MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:42:07,275 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.32ms. Allocated memory is still 142.6MB. Free memory was 107.8MB in the beginning and 98.4MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 16:42:07,277 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62ms. Allocated memory is still 104.9MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 244.32ms. Allocated memory is still 142.6MB. Free memory was 107.8MB in the beginning and 98.4MB 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: 79]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 --- 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 16:42:09,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:42:09,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:42:09,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:42:09,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:42:09,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:42:09,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:42:09,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:42:09,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:42:09,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:42:09,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:42:09,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:42:09,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:42:09,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:42:09,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:42:09,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:42:09,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:42:09,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:42:09,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:42:09,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:42:09,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:42:09,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:42:09,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:42:09,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:42:09,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:42:09,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:42:09,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:42:09,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:42:09,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:42:09,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:42:09,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:42:09,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:42:09,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:42:09,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:42:09,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:42:09,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:42:09,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:42:09,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:42:09,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:42:09,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:42:09,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:42:09,753 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-21 16:42:09,796 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:42:09,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:42:09,798 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:42:09,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:42:09,799 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:42:09,799 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:42:09,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:42:09,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:42:09,801 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:42:09,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:42:09,802 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:42:09,802 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:42:09,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:42:09,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:42:09,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:42:09,803 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 16:42:09,804 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 16:42:09,804 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 16:42:09,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:42:09,804 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 16:42:09,804 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-21 16:42:09,805 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-21 16:42:09,805 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:42:09,805 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:42:09,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:42:09,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:42:09,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:42:09,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:42:09,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:42:09,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:42:09,807 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-21 16:42:09,807 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-21 16:42:09,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-21 16:42:09,808 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_964ef80b-bb21-4188-ba9f-a383dc98ca03/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 [2022-11-21 16:42:10,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:42:10,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:42:10,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:42:10,227 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:42:10,227 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:42:10,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2022-11-21 16:42:13,378 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:42:13,637 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:42:13,638 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2022-11-21 16:42:13,645 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/data/bcd7f97ef/9f0d1a3de2484a4f9d16f3b4e73ffe7e/FLAG304b3d8ea [2022-11-21 16:42:13,659 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/data/bcd7f97ef/9f0d1a3de2484a4f9d16f3b4e73ffe7e [2022-11-21 16:42:13,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:42:13,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:42:13,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:42:13,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:42:13,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:42:13,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:42:13" (1/1) ... [2022-11-21 16:42:13,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77d1c91c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:13, skipping insertion in model container [2022-11-21 16:42:13,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:42:13" (1/1) ... [2022-11-21 16:42:13,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:42:13,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:42:13,903 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_964ef80b-bb21-4188-ba9f-a383dc98ca03/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c[2618,2631] [2022-11-21 16:42:13,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:42:13,941 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-21 16:42:13,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:42:13,988 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_964ef80b-bb21-4188-ba9f-a383dc98ca03/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c[2618,2631] [2022-11-21 16:42:13,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:42:14,007 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:42:14,046 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_964ef80b-bb21-4188-ba9f-a383dc98ca03/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c[2618,2631] [2022-11-21 16:42:14,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:42:14,089 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:42:14,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:14 WrapperNode [2022-11-21 16:42:14,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:42:14,091 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:42:14,091 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:42:14,091 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:42:14,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:14" (1/1) ... [2022-11-21 16:42:14,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:14" (1/1) ... [2022-11-21 16:42:14,163 INFO L138 Inliner]: procedures = 27, calls = 41, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 179 [2022-11-21 16:42:14,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:42:14,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:42:14,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:42:14,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:42:14,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:14" (1/1) ... [2022-11-21 16:42:14,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:14" (1/1) ... [2022-11-21 16:42:14,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:14" (1/1) ... [2022-11-21 16:42:14,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:14" (1/1) ... [2022-11-21 16:42:14,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:14" (1/1) ... [2022-11-21 16:42:14,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:14" (1/1) ... [2022-11-21 16:42:14,215 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:14" (1/1) ... [2022-11-21 16:42:14,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:14" (1/1) ... [2022-11-21 16:42:14,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:42:14,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:42:14,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:42:14,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:42:14,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:14" (1/1) ... [2022-11-21 16:42:14,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:42:14,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:42:14,288 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:42:14,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:42:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:42:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-21 16:42:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 16:42:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:42:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-21 16:42:14,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 16:42:14,385 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:42:14,385 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:42:14,385 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:42:14,385 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:42:14,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:42:14,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:42:14,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:42:14,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:42:14,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-21 16:42:14,408 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 16:42:14,587 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:42:14,593 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:42:15,901 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:42:15,915 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:42:15,915 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-21 16:42:15,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:42:15 BoogieIcfgContainer [2022-11-21 16:42:15,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:42:15,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:42:15,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:42:15,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:42:15,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:42:13" (1/3) ... [2022-11-21 16:42:15,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@478bb27c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:42:15, skipping insertion in model container [2022-11-21 16:42:15,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:14" (2/3) ... [2022-11-21 16:42:15,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@478bb27c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:42:15, skipping insertion in model container [2022-11-21 16:42:15,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:42:15" (3/3) ... [2022-11-21 16:42:15,930 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2022-11-21 16:42:15,953 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:42:15,954 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2022-11-21 16:42:15,954 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:42:16,094 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 16:42:16,138 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-21 16:42:16,156 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 289 places, 308 transitions, 632 flow [2022-11-21 16:42:16,160 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 289 places, 308 transitions, 632 flow [2022-11-21 16:42:16,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 308 transitions, 632 flow [2022-11-21 16:42:16,328 INFO L130 PetriNetUnfolder]: 26/306 cut-off events. [2022-11-21 16:42:16,333 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:42:16,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 306 events. 26/306 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 438 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 223. Up to 2 conditions per place. [2022-11-21 16:42:16,352 INFO L119 LiptonReduction]: Number of co-enabled transitions 1820 [2022-11-21 16:44:17,516 WARN L233 SmtUtils]: Spent 11.30s on a formula simplification. DAG size of input: 120 DAG size of output: 118 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-21 16:44:22,588 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 111 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-21 16:44:53,373 WARN L233 SmtUtils]: Spent 17.20s on a formula simplification. DAG size of input: 133 DAG size of output: 130 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-21 16:44:59,760 WARN L233 SmtUtils]: Spent 6.38s on a formula simplification that was a NOOP. DAG size: 120 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-21 16:45:18,575 WARN L233 SmtUtils]: Spent 18.81s on a formula simplification. DAG size of input: 145 DAG size of output: 142 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-21 16:45:24,165 WARN L233 SmtUtils]: Spent 5.59s on a formula simplification that was a NOOP. DAG size: 132 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-21 16:45:24,174 INFO L134 LiptonReduction]: Checked pairs total: 4014 [2022-11-21 16:45:24,174 INFO L136 LiptonReduction]: Total number of compositions: 352 [2022-11-21 16:45:24,183 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 64 places, 64 transitions, 144 flow [2022-11-21 16:45:24,244 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 489 states, 343 states have (on average 3.7346938775510203) internal successors, (1281), 488 states have internal predecessors, (1281), 0 states have call successors, (0), 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 16:45:24,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:45:24,277 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;@3d448bec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:45:24,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-11-21 16:45:24,282 INFO L276 IsEmpty]: Start isEmpty. Operand has 489 states, 343 states have (on average 3.7346938775510203) internal successors, (1281), 488 states have internal predecessors, (1281), 0 states have call successors, (0), 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 16:45:24,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 16:45:24,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:24,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 16:45:24,288 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-21 16:45:24,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:24,293 INFO L85 PathProgramCache]: Analyzing trace with hash 36757, now seen corresponding path program 1 times [2022-11-21 16:45:24,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:45:24,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614913730] [2022-11-21 16:45:24,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:24,307 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 16:45:24,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:45:24,309 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:24,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:24,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 16:45:24,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:45:24,711 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-21 16:45:24,712 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 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-21 16:45:24,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:24,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:45:24,758 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:45:24,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614913730] [2022-11-21 16:45:24,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614913730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:24,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:24,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 16:45:24,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391321049] [2022-11-21 16:45:24,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:24,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:45:24,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:45:24,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:45:24,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:45:24,797 INFO L87 Difference]: Start difference. First operand has 489 states, 343 states have (on average 3.7346938775510203) internal successors, (1281), 488 states have internal predecessors, (1281), 0 states have call successors, (0), 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 16:45:25,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:25,780 INFO L93 Difference]: Finished difference Result 485 states and 1277 transitions. [2022-11-21 16:45:25,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:45:25,787 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 16:45:25,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:25,810 INFO L225 Difference]: With dead ends: 485 [2022-11-21 16:45:25,810 INFO L226 Difference]: Without dead ends: 485 [2022-11-21 16:45:25,810 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 16:45:25,813 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 53 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:25,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 2 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 16:45:25,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-11-21 16:45:25,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 485. [2022-11-21 16:45:25,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 343 states have (on average 3.7230320699708455) internal successors, (1277), 484 states have internal predecessors, (1277), 0 states have call successors, (0), 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 16:45:25,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1277 transitions. [2022-11-21 16:45:25,899 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1277 transitions. Word has length 2 [2022-11-21 16:45:25,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:25,899 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 1277 transitions. [2022-11-21 16:45:25,900 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 16:45:25,900 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1277 transitions. [2022-11-21 16:45:25,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 16:45:25,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:25,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 16:45:25,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:26,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:26,116 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-21 16:45:26,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:26,116 INFO L85 PathProgramCache]: Analyzing trace with hash 36758, now seen corresponding path program 1 times [2022-11-21 16:45:26,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:45:26,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970326022] [2022-11-21 16:45:26,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:26,117 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 16:45:26,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:45:26,149 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:26,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:26,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 16:45:26,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:45:26,578 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 16:45:26,578 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 16:45:26,664 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 16:45:26,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:45:26,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:45:26,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970326022] [2022-11-21 16:45:26,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970326022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:26,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:26,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 16:45:26,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084306623] [2022-11-21 16:45:26,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:26,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:45:26,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:45:26,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:45:26,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:45:26,669 INFO L87 Difference]: Start difference. First operand 485 states and 1277 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 16:45:28,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:28,694 INFO L93 Difference]: Finished difference Result 966 states and 2550 transitions. [2022-11-21 16:45:28,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:45:28,699 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 16:45:28,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:28,706 INFO L225 Difference]: With dead ends: 966 [2022-11-21 16:45:28,707 INFO L226 Difference]: Without dead ends: 966 [2022-11-21 16:45:28,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:45:28,709 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 47 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:28,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 7 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-21 16:45:28,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-11-21 16:45:28,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 488. [2022-11-21 16:45:28,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 346 states have (on average 3.713872832369942) internal successors, (1285), 487 states have internal predecessors, (1285), 0 states have call successors, (0), 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 16:45:28,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 1285 transitions. [2022-11-21 16:45:28,744 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 1285 transitions. Word has length 2 [2022-11-21 16:45:28,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:28,745 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 1285 transitions. [2022-11-21 16:45:28,745 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 16:45:28,745 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 1285 transitions. [2022-11-21 16:45:28,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 16:45:28,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:28,746 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 16:45:28,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:28,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:28,959 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-21 16:45:28,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:28,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1146155, now seen corresponding path program 1 times [2022-11-21 16:45:28,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:45:28,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148521615] [2022-11-21 16:45:28,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:28,961 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 16:45:28,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:45:28,962 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:28,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:29,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 16:45:29,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:45:29,286 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 16:45:29,287 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 16:45:29,491 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 16:45:29,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:45:29,930 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 16:45:29,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:45:29,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148521615] [2022-11-21 16:45:29,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148521615] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:45:29,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:45:29,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-21 16:45:29,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147675625] [2022-11-21 16:45:29,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:45:29,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:45:29,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:45:29,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:45:29,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:45:29,933 INFO L87 Difference]: Start difference. First operand 488 states and 1285 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 16:45:32,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:45:35,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:45:38,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:38,465 INFO L93 Difference]: Finished difference Result 1452 states and 3835 transitions. [2022-11-21 16:45:38,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:45:38,471 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 16:45:38,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:38,481 INFO L225 Difference]: With dead ends: 1452 [2022-11-21 16:45:38,482 INFO L226 Difference]: Without dead ends: 1452 [2022-11-21 16:45:38,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:45:38,484 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 194 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:38,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 14 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 354 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2022-11-21 16:45:38,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2022-11-21 16:45:38,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 496. [2022-11-21 16:45:38,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 354 states have (on average 3.6864406779661016) internal successors, (1305), 495 states have internal predecessors, (1305), 0 states have call successors, (0), 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 16:45:38,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 1305 transitions. [2022-11-21 16:45:38,529 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 1305 transitions. Word has length 3 [2022-11-21 16:45:38,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:38,530 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 1305 transitions. [2022-11-21 16:45:38,530 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 16:45:38,530 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 1305 transitions. [2022-11-21 16:45:38,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-21 16:45:38,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:38,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-21 16:45:38,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:38,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:38,745 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-21 16:45:38,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:38,746 INFO L85 PathProgramCache]: Analyzing trace with hash 35604477, now seen corresponding path program 1 times [2022-11-21 16:45:38,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:45:38,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664388071] [2022-11-21 16:45:38,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:38,747 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 16:45:38,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:45:38,750 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:38,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:38,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 16:45:38,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:45:39,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:45:39,151 INFO L321 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-21 16:45:39,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 33 [2022-11-21 16:45:39,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:45:39,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-21 16:45:39,468 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-21 16:45:39,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-21 16:45:39,519 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 16:45:39,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:45:39,520 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:45:39,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664388071] [2022-11-21 16:45:39,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664388071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:39,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:39,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:45:39,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337359455] [2022-11-21 16:45:39,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:39,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:45:39,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:45:39,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:45:39,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:45:39,522 INFO L87 Difference]: Start difference. First operand 496 states and 1305 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:40,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:40,526 INFO L93 Difference]: Finished difference Result 399 states and 1008 transitions. [2022-11-21 16:45:40,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:45:40,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-21 16:45:40,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:40,533 INFO L225 Difference]: With dead ends: 399 [2022-11-21 16:45:40,534 INFO L226 Difference]: Without dead ends: 399 [2022-11-21 16:45:40,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:45:40,535 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 102 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:40,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 2 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 16:45:40,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-11-21 16:45:40,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2022-11-21 16:45:40,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 293 states have (on average 3.4402730375426622) internal successors, (1008), 398 states have internal predecessors, (1008), 0 states have call successors, (0), 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 16:45:40,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 1008 transitions. [2022-11-21 16:45:40,550 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 1008 transitions. Word has length 4 [2022-11-21 16:45:40,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:40,550 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 1008 transitions. [2022-11-21 16:45:40,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:40,551 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 1008 transitions. [2022-11-21 16:45:40,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-21 16:45:40,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:40,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-21 16:45:40,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:40,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:40,765 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-21 16:45:40,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:40,766 INFO L85 PathProgramCache]: Analyzing trace with hash 35604479, now seen corresponding path program 1 times [2022-11-21 16:45:40,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:45:40,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393994457] [2022-11-21 16:45:40,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:40,767 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 16:45:40,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:45:40,768 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:40,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:40,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 16:45:40,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:45:40,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:45:41,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:45:41,092 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 16:45:41,092 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 1 case distinctions, treesize of input 12 treesize of output 20 [2022-11-21 16:45:41,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-21 16:45:41,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:45:41,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-21 16:45:41,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:45:41,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-21 16:45:41,424 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 16:45:41,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:45:41,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:45:41,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393994457] [2022-11-21 16:45:41,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393994457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:41,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:41,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:45:41,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421232120] [2022-11-21 16:45:41,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:41,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:45:41,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:45:41,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:45:41,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:45:41,427 INFO L87 Difference]: Start difference. First operand 399 states and 1008 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:42,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:42,413 INFO L93 Difference]: Finished difference Result 302 states and 711 transitions. [2022-11-21 16:45:42,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:45:42,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-21 16:45:42,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:42,420 INFO L225 Difference]: With dead ends: 302 [2022-11-21 16:45:42,420 INFO L226 Difference]: Without dead ends: 302 [2022-11-21 16:45:42,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:45:42,424 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 49 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:42,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 2 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 16:45:42,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-21 16:45:42,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2022-11-21 16:45:42,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 232 states have (on average 3.064655172413793) internal successors, (711), 301 states have internal predecessors, (711), 0 states have call successors, (0), 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 16:45:42,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 711 transitions. [2022-11-21 16:45:42,436 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 711 transitions. Word has length 4 [2022-11-21 16:45:42,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:42,436 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 711 transitions. [2022-11-21 16:45:42,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:42,437 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 711 transitions. [2022-11-21 16:45:42,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 16:45:42,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:42,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 16:45:42,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:42,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:42,652 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-21 16:45:42,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:42,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1103743263, now seen corresponding path program 1 times [2022-11-21 16:45:42,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:45:42,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763167280] [2022-11-21 16:45:42,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:42,653 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 16:45:42,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:45:42,654 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:42,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:42,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 16:45:42,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:45:42,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-21 16:45:42,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-21 16:45:43,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:45:43,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:45:43,090 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 16:45:43,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-21 16:45:43,145 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 16:45:43,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:45:43,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:45:43,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763167280] [2022-11-21 16:45:43,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [763167280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:43,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:43,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:45:43,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492582838] [2022-11-21 16:45:43,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:43,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:45:43,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:45:43,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:45:43,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:45:43,148 INFO L87 Difference]: Start difference. First operand 302 states and 711 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:45,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:45,665 INFO L93 Difference]: Finished difference Result 648 states and 1599 transitions. [2022-11-21 16:45:45,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:45:45,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-21 16:45:45,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:45,673 INFO L225 Difference]: With dead ends: 648 [2022-11-21 16:45:45,673 INFO L226 Difference]: Without dead ends: 648 [2022-11-21 16:45:45,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:45:45,674 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 155 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:45,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 7 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-21 16:45:45,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2022-11-21 16:45:45,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 435. [2022-11-21 16:45:45,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 365 states have (on average 3.2356164383561645) internal successors, (1181), 434 states have internal predecessors, (1181), 0 states have call successors, (0), 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 16:45:45,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 1181 transitions. [2022-11-21 16:45:45,693 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 1181 transitions. Word has length 5 [2022-11-21 16:45:45,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:45,693 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 1181 transitions. [2022-11-21 16:45:45,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:45,693 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 1181 transitions. [2022-11-21 16:45:45,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 16:45:45,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:45,694 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-21 16:45:45,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:45,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:45,908 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-21 16:45:45,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:45,909 INFO L85 PathProgramCache]: Analyzing trace with hash -208024362, now seen corresponding path program 2 times [2022-11-21 16:45:45,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:45:45,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258739096] [2022-11-21 16:45:45,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:45:45,909 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 16:45:45,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:45:45,911 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:45,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:45:46,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:45:46,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:45:46,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 16:45:46,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:45:46,364 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 16:45:46,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 16:45:46,900 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 16:45:46,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:45:48,281 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 16:45:48,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:45:48,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258739096] [2022-11-21 16:45:48,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258739096] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:45:48,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:45:48,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-21 16:45:48,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505782193] [2022-11-21 16:45:48,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:45:48,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:45:48,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:45:48,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:45:48,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:45:48,283 INFO L87 Difference]: Start difference. First operand 435 states and 1181 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 16:45:55,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:45:57,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:45:59,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:46:01,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:46:04,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:46:06,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:46:08,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:46:10,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:46:21,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:46:21,441 INFO L93 Difference]: Finished difference Result 2282 states and 5702 transitions. [2022-11-21 16:46:21,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:46:21,446 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 16:46:21,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:46:21,456 INFO L225 Difference]: With dead ends: 2282 [2022-11-21 16:46:21,456 INFO L226 Difference]: Without dead ends: 2282 [2022-11-21 16:46:21,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:46:21,457 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 590 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 159 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:46:21,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 70 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1604 Invalid, 8 Unknown, 0 Unchecked, 30.9s Time] [2022-11-21 16:46:21,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2022-11-21 16:46:21,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 449. [2022-11-21 16:46:21,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 379 states have (on average 3.2058047493403694) internal successors, (1215), 448 states have internal predecessors, (1215), 0 states have call successors, (0), 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 16:46:21,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 1215 transitions. [2022-11-21 16:46:21,487 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 1215 transitions. Word has length 6 [2022-11-21 16:46:21,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:46:21,487 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 1215 transitions. [2022-11-21 16:46:21,487 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 16:46:21,488 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 1215 transitions. [2022-11-21 16:46:21,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 16:46:21,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:46:21,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 16:46:21,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:46:21,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:46:21,703 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-21 16:46:21,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:21,703 INFO L85 PathProgramCache]: Analyzing trace with hash -143809987, now seen corresponding path program 1 times [2022-11-21 16:46:21,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:46:21,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451895579] [2022-11-21 16:46:21,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:21,704 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:46:21,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:46:21,705 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:46:21,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:46:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:21,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 16:46:21,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:46:21,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:46:22,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:46:22,068 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 16:46:22,068 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 1 case distinctions, treesize of input 12 treesize of output 20 [2022-11-21 16:46:22,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:46:22,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-21 16:46:22,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:46:22,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-21 16:46:22,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:46:22,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-21 16:46:22,470 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 16:46:22,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:46:22,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:46:22,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451895579] [2022-11-21 16:46:22,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451895579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:22,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:22,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:46:22,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626958841] [2022-11-21 16:46:22,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:22,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:46:22,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:46:22,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:46:22,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:46:22,472 INFO L87 Difference]: Start difference. First operand 449 states and 1215 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 16:46:23,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:46:23,444 INFO L93 Difference]: Finished difference Result 424 states and 1148 transitions. [2022-11-21 16:46:23,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:46:23,449 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 16:46:23,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:46:23,452 INFO L225 Difference]: With dead ends: 424 [2022-11-21 16:46:23,452 INFO L226 Difference]: Without dead ends: 424 [2022-11-21 16:46:23,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:46:23,453 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 92 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:46:23,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 2 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 16:46:23,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-11-21 16:46:23,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2022-11-21 16:46:23,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 366 states have (on average 3.1366120218579234) internal successors, (1148), 423 states have internal predecessors, (1148), 0 states have call successors, (0), 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 16:46:23,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 1148 transitions. [2022-11-21 16:46:23,466 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 1148 transitions. Word has length 6 [2022-11-21 16:46:23,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:46:23,466 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 1148 transitions. [2022-11-21 16:46:23,467 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 16:46:23,467 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 1148 transitions. [2022-11-21 16:46:23,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 16:46:23,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:46:23,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 16:46:23,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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)] Forceful destruction successful, exit code 0 [2022-11-21 16:46:23,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:46:23,682 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-21 16:46:23,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:23,683 INFO L85 PathProgramCache]: Analyzing trace with hash -143809986, now seen corresponding path program 1 times [2022-11-21 16:46:23,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:46:23,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070850370] [2022-11-21 16:46:23,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:23,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:46:23,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:46:23,685 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:46:23,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:46:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:23,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 16:46:23,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:46:24,019 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-21 16:46:24,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2022-11-21 16:46:24,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:46:24,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-21 16:46:24,247 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-21 16:46:24,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-21 16:46:24,334 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 16:46:24,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:46:24,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:46:24,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070850370] [2022-11-21 16:46:24,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070850370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:24,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:24,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:46:24,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463796071] [2022-11-21 16:46:24,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:24,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:46:24,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:46:24,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:46:24,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:46:24,337 INFO L87 Difference]: Start difference. First operand 424 states and 1148 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 16:46:25,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:46:25,321 INFO L93 Difference]: Finished difference Result 399 states and 1081 transitions. [2022-11-21 16:46:25,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:46:25,326 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 16:46:25,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:46:25,328 INFO L225 Difference]: With dead ends: 399 [2022-11-21 16:46:25,328 INFO L226 Difference]: Without dead ends: 399 [2022-11-21 16:46:25,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:46:25,330 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 88 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:46:25,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 2 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 16:46:25,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-11-21 16:46:25,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2022-11-21 16:46:25,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 353 states have (on average 3.0623229461756374) internal successors, (1081), 398 states have internal predecessors, (1081), 0 states have call successors, (0), 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 16:46:25,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 1081 transitions. [2022-11-21 16:46:25,343 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 1081 transitions. Word has length 6 [2022-11-21 16:46:25,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:46:25,344 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 1081 transitions. [2022-11-21 16:46:25,344 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 16:46:25,345 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 1081 transitions. [2022-11-21 16:46:25,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 16:46:25,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:46:25,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:25,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:46:25,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:46:25,560 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-21 16:46:25,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:25,560 INFO L85 PathProgramCache]: Analyzing trace with hash -163151747, now seen corresponding path program 1 times [2022-11-21 16:46:25,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:46:25,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670157239] [2022-11-21 16:46:25,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:25,561 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 16:46:25,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:46:25,562 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:46:25,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:46:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:25,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 16:46:25,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:46:25,955 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 16:46:25,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:46:25,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:46:25,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670157239] [2022-11-21 16:46:25,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670157239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:25,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:25,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:46:25,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250757751] [2022-11-21 16:46:25,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:25,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:46:25,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:46:25,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:46:25,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:46:25,957 INFO L87 Difference]: Start difference. First operand 399 states and 1081 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 16:46:29,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:46:29,034 INFO L93 Difference]: Finished difference Result 631 states and 1573 transitions. [2022-11-21 16:46:29,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:46:29,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 16:46:29,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:46:29,047 INFO L225 Difference]: With dead ends: 631 [2022-11-21 16:46:29,047 INFO L226 Difference]: Without dead ends: 631 [2022-11-21 16:46:29,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:46:29,048 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 120 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:46:29,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 18 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-21 16:46:29,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2022-11-21 16:46:29,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 498. [2022-11-21 16:46:29,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 452 states have (on average 3.0) internal successors, (1356), 497 states have internal predecessors, (1356), 0 states have call successors, (0), 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 16:46:29,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1356 transitions. [2022-11-21 16:46:29,062 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1356 transitions. Word has length 7 [2022-11-21 16:46:29,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:46:29,062 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 1356 transitions. [2022-11-21 16:46:29,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 16:46:29,063 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1356 transitions. [2022-11-21 16:46:29,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 16:46:29,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:46:29,063 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-21 16:46:29,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:46:29,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:46:29,287 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-21 16:46:29,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:29,287 INFO L85 PathProgramCache]: Analyzing trace with hash -159564517, now seen corresponding path program 1 times [2022-11-21 16:46:29,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:46:29,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988513613] [2022-11-21 16:46:29,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:29,288 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 16:46:29,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:46:29,289 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:46:29,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:46:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:29,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 16:46:29,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:46:29,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-21 16:46:29,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-21 16:46:29,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:46:29,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:46:29,711 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 16:46:29,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-21 16:46:30,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:46:30,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-21 16:46:30,092 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 16:46:30,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-21 16:46:30,216 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 16:46:30,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:46:32,807 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:46:32,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 74 [2022-11-21 16:46:36,230 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:46:36,231 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:46:36,241 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 16:46:36,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:46:36,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988513613] [2022-11-21 16:46:36,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988513613] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:46:36,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:46:36,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-21 16:46:36,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941481008] [2022-11-21 16:46:36,242 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:46:36,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 16:46:36,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:46:36,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 16:46:36,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=78, Unknown=1, NotChecked=0, Total=110 [2022-11-21 16:46:36,243 INFO L87 Difference]: Start difference. First operand 498 states and 1356 transitions. Second operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 11 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 16:46:59,119 WARN L233 SmtUtils]: Spent 20.90s on a formula simplification that was a NOOP. DAG size: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:47:10,984 WARN L233 SmtUtils]: Spent 10.61s on a formula simplification. DAG size of input: 74 DAG size of output: 66 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:47:18,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:47:18,450 INFO L93 Difference]: Finished difference Result 1328 states and 3322 transitions. [2022-11-21 16:47:18,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:47:18,455 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 11 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 16:47:18,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:47:18,461 INFO L225 Difference]: With dead ends: 1328 [2022-11-21 16:47:18,462 INFO L226 Difference]: Without dead ends: 1328 [2022-11-21 16:47:18,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 38.6s TimeCoverageRelationStatistics Valid=88, Invalid=183, Unknown=1, NotChecked=0, Total=272 [2022-11-21 16:47:18,463 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 426 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:47:18,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 21 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-21 16:47:18,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2022-11-21 16:47:18,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 546. [2022-11-21 16:47:18,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 500 states have (on average 2.972) internal successors, (1486), 545 states have internal predecessors, (1486), 0 states have call successors, (0), 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 16:47:18,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 1486 transitions. [2022-11-21 16:47:18,491 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 1486 transitions. Word has length 7 [2022-11-21 16:47:18,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:47:18,492 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 1486 transitions. [2022-11-21 16:47:18,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 11 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 16:47:18,492 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 1486 transitions. [2022-11-21 16:47:18,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 16:47:18,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:47:18,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:18,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:47:18,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:47:18,707 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-21 16:47:18,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:18,708 INFO L85 PathProgramCache]: Analyzing trace with hash 426172397, now seen corresponding path program 1 times [2022-11-21 16:47:18,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:47:18,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830785994] [2022-11-21 16:47:18,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:18,708 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:47:18,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:47:18,710 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:47:18,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:47:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:18,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-21 16:47:18,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:47:23,440 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 16:47:23,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:47:24,158 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 16:47:24,159 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:47:24,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830785994] [2022-11-21 16:47:24,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830785994] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:47:24,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:47:24,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-21 16:47:24,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556933772] [2022-11-21 16:47:24,160 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:47:24,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:47:24,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:47:24,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:47:24,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:47:24,161 INFO L87 Difference]: Start difference. First operand 546 states and 1486 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 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 16:47:26,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 16:47:29,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 16:47:32,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 16:47:41,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:47:41,187 INFO L93 Difference]: Finished difference Result 1282 states and 3454 transitions. [2022-11-21 16:47:41,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 16:47:41,198 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 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 16:47:41,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:47:41,202 INFO L225 Difference]: With dead ends: 1282 [2022-11-21 16:47:41,202 INFO L226 Difference]: Without dead ends: 1282 [2022-11-21 16:47:41,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-21 16:47:41,203 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 160 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:47:41,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 33 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 438 Invalid, 3 Unknown, 0 Unchecked, 16.3s Time] [2022-11-21 16:47:41,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2022-11-21 16:47:41,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 547. [2022-11-21 16:47:41,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 501 states have (on average 2.9660678642714573) internal successors, (1486), 546 states have internal predecessors, (1486), 0 states have call successors, (0), 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 16:47:41,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 1486 transitions. [2022-11-21 16:47:41,224 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 1486 transitions. Word has length 9 [2022-11-21 16:47:41,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:47:41,225 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 1486 transitions. [2022-11-21 16:47:41,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 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 16:47:41,225 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 1486 transitions. [2022-11-21 16:47:41,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 16:47:41,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:47:41,226 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2022-11-21 16:47:41,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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)] Ended with exit code 0 [2022-11-21 16:47:41,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:47:41,442 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-21 16:47:41,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:41,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1277403672, now seen corresponding path program 1 times [2022-11-21 16:47:41,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:47:41,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288749919] [2022-11-21 16:47:41,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:41,443 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 16:47:41,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:47:41,444 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:47:41,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:47:41,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:41,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:47:41,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:47:41,813 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-21 16:47:41,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-21 16:47:41,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:47:41,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:47:41,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:47:41,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288749919] [2022-11-21 16:47:41,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288749919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:41,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:41,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:47:41,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083783270] [2022-11-21 16:47:41,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:41,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:47:41,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:47:41,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:47:41,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:47:41,848 INFO L87 Difference]: Start difference. First operand 547 states and 1486 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:42,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:47:42,842 INFO L93 Difference]: Finished difference Result 523 states and 1389 transitions. [2022-11-21 16:47:42,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:47:42,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-21 16:47:42,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:47:42,850 INFO L225 Difference]: With dead ends: 523 [2022-11-21 16:47:42,851 INFO L226 Difference]: Without dead ends: 523 [2022-11-21 16:47:42,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 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 16:47:42,852 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:47:42,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 2 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 16:47:42,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-11-21 16:47:42,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 475. [2022-11-21 16:47:42,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 436 states have (on average 2.9013761467889907) internal successors, (1265), 474 states have internal predecessors, (1265), 0 states have call successors, (0), 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 16:47:42,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 1265 transitions. [2022-11-21 16:47:42,866 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 1265 transitions. Word has length 9 [2022-11-21 16:47:42,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:47:42,866 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 1265 transitions. [2022-11-21 16:47:42,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:42,867 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 1265 transitions. [2022-11-21 16:47:42,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 16:47:42,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:47:42,868 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1] [2022-11-21 16:47:42,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:47:43,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:47:43,083 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-21 16:47:43,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:43,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1269483382, now seen corresponding path program 1 times [2022-11-21 16:47:43,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:47:43,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651507119] [2022-11-21 16:47:43,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:43,083 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 16:47:43,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:47:43,084 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:47:43,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:47:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:43,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-21 16:47:43,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:47:43,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-21 16:47:44,150 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:47:44,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:47:47,005 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:47:47,006 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:47:47,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651507119] [2022-11-21 16:47:47,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651507119] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:47:47,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:47:47,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 16 [2022-11-21 16:47:47,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310192078] [2022-11-21 16:47:47,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:47:47,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-21 16:47:47,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:47:47,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-21 16:47:47,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-21 16:47:47,008 INFO L87 Difference]: Start difference. First operand 475 states and 1265 transitions. Second operand has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:47:55,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:48:00,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:48:00,641 INFO L93 Difference]: Finished difference Result 587 states and 1496 transitions. [2022-11-21 16:48:00,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 16:48:00,648 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-21 16:48:00,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:48:00,651 INFO L225 Difference]: With dead ends: 587 [2022-11-21 16:48:00,651 INFO L226 Difference]: Without dead ends: 587 [2022-11-21 16:48:00,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2022-11-21 16:48:00,652 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 40 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:48:00,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 29 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2022-11-21 16:48:00,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-11-21 16:48:00,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 479. [2022-11-21 16:48:00,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 440 states have (on average 2.890909090909091) internal successors, (1272), 478 states have internal predecessors, (1272), 0 states have call successors, (0), 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 16:48:00,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 1272 transitions. [2022-11-21 16:48:00,667 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 1272 transitions. Word has length 10 [2022-11-21 16:48:00,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:48:00,668 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 1272 transitions. [2022-11-21 16:48:00,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:00,668 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 1272 transitions. [2022-11-21 16:48:00,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 16:48:00,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:48:00,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:00,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:48:00,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:48:00,890 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-21 16:48:00,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:00,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1756246536, now seen corresponding path program 1 times [2022-11-21 16:48:00,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:48:00,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030884353] [2022-11-21 16:48:00,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:00,892 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 16:48:00,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:48:00,892 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:48:00,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:48:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:01,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:48:01,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:48:01,510 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 16:48:01,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:48:01,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:48:01,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030884353] [2022-11-21 16:48:01,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030884353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:01,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:48:01,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:48:01,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281275683] [2022-11-21 16:48:01,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:01,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:48:01,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:48:01,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:48:01,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:48:01,512 INFO L87 Difference]: Start difference. First operand 479 states and 1272 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 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 16:48:03,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:48:03,922 INFO L93 Difference]: Finished difference Result 512 states and 1327 transitions. [2022-11-21 16:48:03,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:48:03,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-21 16:48:03,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:48:03,931 INFO L225 Difference]: With dead ends: 512 [2022-11-21 16:48:03,931 INFO L226 Difference]: Without dead ends: 480 [2022-11-21 16:48:03,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:48:03,932 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 90 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:48:03,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 11 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-21 16:48:03,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-11-21 16:48:03,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 478. [2022-11-21 16:48:03,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 439 states have (on average 2.8929384965831435) internal successors, (1270), 477 states have internal predecessors, (1270), 0 states have call successors, (0), 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 16:48:03,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 1270 transitions. [2022-11-21 16:48:03,947 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 1270 transitions. Word has length 10 [2022-11-21 16:48:03,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:48:03,947 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 1270 transitions. [2022-11-21 16:48:03,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 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 16:48:03,947 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1270 transitions. [2022-11-21 16:48:03,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 16:48:03,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:48:03,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:03,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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)] Forceful destruction successful, exit code 0 [2022-11-21 16:48:04,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:48:04,165 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-21 16:48:04,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:04,165 INFO L85 PathProgramCache]: Analyzing trace with hash 678635753, now seen corresponding path program 1 times [2022-11-21 16:48:04,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:48:04,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401871485] [2022-11-21 16:48:04,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:04,166 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 16:48:04,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:48:04,173 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:48:04,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:48:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:04,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-21 16:48:04,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:48:08,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:48:08,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:48:10,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:48:10,139 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:48:10,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401871485] [2022-11-21 16:48:10,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401871485] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:48:10,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:48:10,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2022-11-21 16:48:10,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414595570] [2022-11-21 16:48:10,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:48:10,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 16:48:10,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:48:10,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 16:48:10,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:48:10,141 INFO L87 Difference]: Start difference. First operand 478 states and 1270 transitions. Second operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:30,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:48:30,384 INFO L93 Difference]: Finished difference Result 1135 states and 2970 transitions. [2022-11-21 16:48:30,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 16:48:30,394 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-21 16:48:30,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:48:30,398 INFO L225 Difference]: With dead ends: 1135 [2022-11-21 16:48:30,398 INFO L226 Difference]: Without dead ends: 1135 [2022-11-21 16:48:30,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=203, Invalid=447, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:48:30,399 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 198 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:48:30,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 38 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2022-11-21 16:48:30,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2022-11-21 16:48:30,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 568. [2022-11-21 16:48:30,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 529 states have (on average 2.7618147448015122) internal successors, (1461), 567 states have internal predecessors, (1461), 0 states have call successors, (0), 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 16:48:30,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 1461 transitions. [2022-11-21 16:48:30,421 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 1461 transitions. Word has length 11 [2022-11-21 16:48:30,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:48:30,422 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 1461 transitions. [2022-11-21 16:48:30,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:48:30,422 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 1461 transitions. [2022-11-21 16:48:30,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 16:48:30,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:48:30,423 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1] [2022-11-21 16:48:30,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:48:30,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:48:30,639 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-21 16:48:30,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:30,640 INFO L85 PathProgramCache]: Analyzing trace with hash 836160717, now seen corresponding path program 1 times [2022-11-21 16:48:30,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:48:30,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797868056] [2022-11-21 16:48:30,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:30,640 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 16:48:30,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:48:30,641 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:48:30,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:48:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:30,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 16:48:30,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:48:31,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-21 16:48:31,995 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 16:48:31,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:48:35,002 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 16:48:35,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:48:35,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797868056] [2022-11-21 16:48:35,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797868056] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:48:35,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:48:35,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-11-21 16:48:35,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731244646] [2022-11-21 16:48:35,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:48:35,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-21 16:48:35,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:48:35,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-21 16:48:35,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-21 16:48:35,005 INFO L87 Difference]: Start difference. First operand 568 states and 1461 transitions. Second operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 17 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 16:48:42,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:48:44,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:48:46,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:48:48,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:48:50,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:48:52,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:48:57,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:48:59,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:49:01,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:49:03,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:49:05,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:49:07,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:49:36,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:49:36,293 INFO L93 Difference]: Finished difference Result 5715 states and 15550 transitions. [2022-11-21 16:49:36,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 16:49:36,301 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.375) internal successors, (22), 17 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 16:49:36,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:49:36,352 INFO L225 Difference]: With dead ends: 5715 [2022-11-21 16:49:36,352 INFO L226 Difference]: Without dead ends: 5715 [2022-11-21 16:49:36,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=276, Invalid=654, Unknown=0, NotChecked=0, Total=930 [2022-11-21 16:49:36,353 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 2560 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 167 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2560 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:49:36,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2560 Valid, 110 Invalid, 2418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 2239 Invalid, 12 Unknown, 0 Unchecked, 53.2s Time] [2022-11-21 16:49:36,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5715 states. [2022-11-21 16:49:36,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5715 to 728. [2022-11-21 16:49:36,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 689 states have (on average 2.6313497822931784) internal successors, (1813), 727 states have internal predecessors, (1813), 0 states have call successors, (0), 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 16:49:36,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1813 transitions. [2022-11-21 16:49:36,434 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1813 transitions. Word has length 11 [2022-11-21 16:49:36,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:49:36,435 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1813 transitions. [2022-11-21 16:49:36,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.375) internal successors, (22), 17 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 16:49:36,435 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1813 transitions. [2022-11-21 16:49:36,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 16:49:36,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:49:36,436 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-21 16:49:36,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:49:36,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:49:36,651 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-21 16:49:36,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:49:36,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1495040842, now seen corresponding path program 3 times [2022-11-21 16:49:36,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:49:36,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212949381] [2022-11-21 16:49:36,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:49:36,652 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 16:49:36,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:49:36,654 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:49:36,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:49:37,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-21 16:49:37,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:49:37,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-21 16:49:37,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:49:37,725 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 16:49:37,725 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 16:49:39,338 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 16:49:39,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:49:45,715 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 16:49:45,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:49:45,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212949381] [2022-11-21 16:49:45,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212949381] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:49:45,715 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:49:45,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-21 16:49:45,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058825640] [2022-11-21 16:49:45,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:49:45,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 16:49:45,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:49:45,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 16:49:45,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-21 16:49:45,717 INFO L87 Difference]: Start difference. First operand 728 states and 1813 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 16:50:07,578 WARN L233 SmtUtils]: Spent 5.58s on a formula simplification that was a NOOP. DAG size: 114 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:50:26,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:50:28,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:50:30,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:50:32,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:50:34,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:50:36,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:50:38,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:50:40,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:50:42,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:50:44,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:50:47,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:50:49,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:50:51,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:50:53,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:50:55,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:50:57,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:50:59,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:51:01,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:51:03,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:51:05,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:51:38,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:51:38,650 INFO L93 Difference]: Finished difference Result 5337 states and 14495 transitions. [2022-11-21 16:51:38,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 16:51:38,658 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 16:51:38,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:51:38,678 INFO L225 Difference]: With dead ends: 5337 [2022-11-21 16:51:38,678 INFO L226 Difference]: Without dead ends: 5337 [2022-11-21 16:51:38,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 32.4s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 16:51:38,680 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3454 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 5298 mSolverCounterSat, 570 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3454 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 5888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 5298 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:51:38,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3454 Valid, 262 Invalid, 5888 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [570 Valid, 5298 Invalid, 20 Unknown, 0 Unchecked, 86.8s Time] [2022-11-21 16:51:38,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5337 states. [2022-11-21 16:51:38,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5337 to 744. [2022-11-21 16:51:38,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 705 states have (on average 2.617021276595745) internal successors, (1845), 743 states have internal predecessors, (1845), 0 states have call successors, (0), 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 16:51:38,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1845 transitions. [2022-11-21 16:51:38,757 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1845 transitions. Word has length 12 [2022-11-21 16:51:38,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:51:38,758 INFO L495 AbstractCegarLoop]: Abstraction has 744 states and 1845 transitions. [2022-11-21 16:51:38,758 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 16:51:38,758 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1845 transitions. [2022-11-21 16:51:38,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 16:51:38,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:51:38,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:38,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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)] Forceful destruction successful, exit code 0 [2022-11-21 16:51:38,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:51:38,974 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-21 16:51:38,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:38,975 INFO L85 PathProgramCache]: Analyzing trace with hash -2022207232, now seen corresponding path program 1 times [2022-11-21 16:51:38,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:51:38,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77554950] [2022-11-21 16:51:38,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:38,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:51:38,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:51:38,977 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:51:38,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:51:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:39,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 16:51:39,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:51:39,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-21 16:51:39,601 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-21 16:51:39,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-11-21 16:51:39,736 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-21 16:51:39,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-21 16:51:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:51:40,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:51:40,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:51:40,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77554950] [2022-11-21 16:51:40,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77554950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:40,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:40,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:51:40,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066535381] [2022-11-21 16:51:40,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:40,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:51:40,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:51:40,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:51:40,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:51:40,123 INFO L87 Difference]: Start difference. First operand 744 states and 1845 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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 16:51:41,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:51:41,322 INFO L93 Difference]: Finished difference Result 700 states and 1707 transitions. [2022-11-21 16:51:41,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:51:41,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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 12 [2022-11-21 16:51:41,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:51:41,325 INFO L225 Difference]: With dead ends: 700 [2022-11-21 16:51:41,326 INFO L226 Difference]: Without dead ends: 700 [2022-11-21 16:51:41,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:51:41,326 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 119 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:51:41,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 2 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 16:51:41,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-11-21 16:51:41,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 700. [2022-11-21 16:51:41,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 671 states have (on average 2.5439642324888228) internal successors, (1707), 699 states have internal predecessors, (1707), 0 states have call successors, (0), 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 16:51:41,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1707 transitions. [2022-11-21 16:51:41,345 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1707 transitions. Word has length 12 [2022-11-21 16:51:41,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:51:41,347 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 1707 transitions. [2022-11-21 16:51:41,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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 16:51:41,347 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1707 transitions. [2022-11-21 16:51:41,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 16:51:41,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:51:41,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:41,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:51:41,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:51:41,563 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-21 16:51:41,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:41,563 INFO L85 PathProgramCache]: Analyzing trace with hash -2022207168, now seen corresponding path program 1 times [2022-11-21 16:51:41,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:51:41,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115250239] [2022-11-21 16:51:41,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:41,564 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 16:51:41,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:51:41,565 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:51:41,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:51:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:42,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 16:51:42,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:51:42,324 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-21 16:51:42,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-21 16:51:42,455 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-21 16:51:42,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-21 16:51:42,570 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-21 16:51:42,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-11-21 16:51:42,709 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-21 16:51:42,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-21 16:51:42,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:51:42,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:51:42,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:51:42,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115250239] [2022-11-21 16:51:42,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115250239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:51:42,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:51:42,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:51:42,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630667614] [2022-11-21 16:51:42,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:51:42,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:51:42,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:51:42,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:51:42,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:51:42,959 INFO L87 Difference]: Start difference. First operand 700 states and 1707 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 16:51:44,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:51:44,107 INFO L93 Difference]: Finished difference Result 677 states and 1635 transitions. [2022-11-21 16:51:44,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:51:44,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 12 [2022-11-21 16:51:44,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:51:44,111 INFO L225 Difference]: With dead ends: 677 [2022-11-21 16:51:44,111 INFO L226 Difference]: Without dead ends: 677 [2022-11-21 16:51:44,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:51:44,112 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 113 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:51:44,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 2 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 16:51:44,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2022-11-21 16:51:44,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 677. [2022-11-21 16:51:44,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 654 states have (on average 2.5) internal successors, (1635), 676 states have internal predecessors, (1635), 0 states have call successors, (0), 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 16:51:44,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1635 transitions. [2022-11-21 16:51:44,130 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1635 transitions. Word has length 12 [2022-11-21 16:51:44,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:51:44,131 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 1635 transitions. [2022-11-21 16:51:44,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 16:51:44,131 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1635 transitions. [2022-11-21 16:51:44,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 16:51:44,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:51:44,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:51:44,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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)] Forceful destruction successful, exit code 0 [2022-11-21 16:51:44,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:51:44,353 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-21 16:51:44,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:51:44,354 INFO L85 PathProgramCache]: Analyzing trace with hash -2022207231, now seen corresponding path program 1 times [2022-11-21 16:51:44,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:51:44,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595938515] [2022-11-21 16:51:44,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:51:44,355 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 16:51:44,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:51:44,358 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:51:44,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:51:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:51:45,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-21 16:51:45,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:51:45,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-21 16:51:45,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-11-21 16:51:46,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:51:46,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 16:51:46,774 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 16:51:46,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-21 16:51:47,479 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-21 16:51:47,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2022-11-21 16:51:49,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:51:49,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:51:51,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:51:51,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-21 16:51:52,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:51:52,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:51:52,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595938515] [2022-11-21 16:51:52,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595938515] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:51:52,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:51:52,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2022-11-21 16:51:52,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138326830] [2022-11-21 16:51:52,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:51:52,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 16:51:52,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:51:52,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 16:51:52,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-21 16:51:52,586 INFO L87 Difference]: Start difference. First operand 677 states and 1635 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 16:52:02,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 16:52:08,217 WARN L233 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 40 DAG size of output: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:52:21,773 WARN L233 SmtUtils]: Spent 8.70s on a formula simplification. DAG size of input: 48 DAG size of output: 45 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:52:48,698 WARN L233 SmtUtils]: Spent 19.90s on a formula simplification. DAG size of input: 43 DAG size of output: 41 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:53:01,915 WARN L233 SmtUtils]: Spent 11.65s on a formula simplification. DAG size of input: 60 DAG size of output: 56 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:53:16,530 WARN L233 SmtUtils]: Spent 9.20s on a formula simplification. DAG size of input: 47 DAG size of output: 45 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:53:30,990 WARN L233 SmtUtils]: Spent 12.79s on a formula simplification. DAG size of input: 56 DAG size of output: 53 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:53:39,251 WARN L233 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 48 DAG size of output: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:53:42,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:53:44,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:53:46,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:53:59,801 WARN L233 SmtUtils]: Spent 11.19s on a formula simplification. DAG size of input: 59 DAG size of output: 56 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:54:06,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:54:09,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:54:11,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:54:13,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:54:25,458 WARN L233 SmtUtils]: Spent 11.28s on a formula simplification. DAG size of input: 54 DAG size of output: 52 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:54:28,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:54:30,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:54:40,076 WARN L233 SmtUtils]: Spent 8.76s on a formula simplification. DAG size of input: 62 DAG size of output: 58 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:54:57,312 WARN L233 SmtUtils]: Spent 12.32s on a formula simplification. DAG size of input: 55 DAG size of output: 52 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:54:59,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:55:17,196 WARN L233 SmtUtils]: Spent 16.24s on a formula simplification. DAG size of input: 61 DAG size of output: 58 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:55:24,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:55:26,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:55:28,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:55:30,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:55:32,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:55:35,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:55:40,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:55:58,605 WARN L233 SmtUtils]: Spent 15.15s on a formula simplification. DAG size of input: 66 DAG size of output: 62 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:56:05,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:56:16,492 WARN L233 SmtUtils]: Spent 9.83s on a formula simplification. DAG size of input: 65 DAG size of output: 62 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:56:19,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:56:22,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:56:24,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:56:41,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:56:46,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:56:58,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:57:00,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:57:04,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:57:04,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:04,270 INFO L93 Difference]: Finished difference Result 2252 states and 5570 transitions. [2022-11-21 16:57:04,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 16:57:04,276 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 16:57:04,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:04,284 INFO L225 Difference]: With dead ends: 2252 [2022-11-21 16:57:04,284 INFO L226 Difference]: Without dead ends: 2252 [2022-11-21 16:57:04,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 199.2s TimeCoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2022-11-21 16:57:04,285 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 443 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 42 mSolverCounterUnsat, 24 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 115.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 24 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 117.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:04,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 70 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1179 Invalid, 24 Unknown, 0 Unchecked, 117.3s Time] [2022-11-21 16:57:04,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2252 states. [2022-11-21 16:57:04,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2252 to 762. [2022-11-21 16:57:04,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 739 states have (on average 2.6170500676589987) internal successors, (1934), 761 states have internal predecessors, (1934), 0 states have call successors, (0), 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 16:57:04,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1934 transitions. [2022-11-21 16:57:04,315 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1934 transitions. Word has length 12 [2022-11-21 16:57:04,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:04,316 INFO L495 AbstractCegarLoop]: Abstraction has 762 states and 1934 transitions. [2022-11-21 16:57:04,316 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 16:57:04,316 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1934 transitions. [2022-11-21 16:57:04,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 16:57:04,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:04,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:04,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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)] Forceful destruction successful, exit code 0 [2022-11-21 16:57:04,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:57:04,530 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-21 16:57:04,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:04,531 INFO L85 PathProgramCache]: Analyzing trace with hash -2022207166, now seen corresponding path program 1 times [2022-11-21 16:57:04,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:57:04,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1520503764] [2022-11-21 16:57:04,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:04,532 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 16:57:04,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:57:04,534 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:57:04,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964ef80b-bb21-4188-ba9f-a383dc98ca03/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 16:57:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:05,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-21 16:57:05,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:57:05,296 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 16:57:05,296 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 16:57:05,530 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-21 16:57:05,530 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 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-21 16:57:06,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:57:06,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 16:57:06,596 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 16:57:06,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-21 16:57:07,459 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 16:57:07,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22