./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:33:12,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:33:12,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:33:12,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:33:12,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:33:12,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:33:12,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:33:12,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:33:12,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:33:12,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:33:12,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:33:12,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:33:12,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:33:12,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:33:12,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:33:12,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:33:12,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:33:12,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:33:12,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:33:12,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:33:12,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:33:12,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:33:12,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:33:12,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:33:12,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:33:12,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:33:12,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:33:12,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:33:12,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:33:12,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:33:12,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:33:12,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:33:12,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:33:12,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:33:12,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:33:12,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:33:12,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:33:12,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:33:12,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:33:12,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:33:12,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:33:12,638 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-19 07:33:12,679 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:33:12,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:33:12,680 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:33:12,680 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:33:12,681 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:33:12,681 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:33:12,681 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:33:12,682 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:33:12,682 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:33:12,682 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:33:12,683 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:33:12,683 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:33:12,684 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:33:12,684 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:33:12,684 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:33:12,684 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:33:12,684 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:33:12,685 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:33:12,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 07:33:12,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 07:33:12,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:33:12,687 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:33:12,687 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:33:12,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:33:12,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:33:12,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:33:12,688 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 07:33:12,688 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 07:33:12,688 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 07:33:12,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:33:12,689 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:33:12,689 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:33:12,689 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:33:12,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:33:12,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:33:12,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:33:12,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:33:12,690 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:33:12,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:33:12,691 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:33:12,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:33:12,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:33:12,691 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_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 [2022-11-19 07:33:13,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:33:13,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:33:13,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:33:13,050 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:33:13,051 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:33:13,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2022-11-19 07:33:13,127 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/data/e33460e49/d43d89e6375e42a8a50c7a5040d3d4d5/FLAG690644cad [2022-11-19 07:33:13,696 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:33:13,697 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2022-11-19 07:33:13,718 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/data/e33460e49/d43d89e6375e42a8a50c7a5040d3d4d5/FLAG690644cad [2022-11-19 07:33:13,965 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/data/e33460e49/d43d89e6375e42a8a50c7a5040d3d4d5 [2022-11-19 07:33:13,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:33:13,971 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:33:13,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:33:13,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:33:13,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:33:13,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:13" (1/1) ... [2022-11-19 07:33:13,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f165b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:13, skipping insertion in model container [2022-11-19 07:33:13,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:13" (1/1) ... [2022-11-19 07:33:13,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:33:14,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:33:14,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:33:14,653 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) [2022-11-19 07:33:14,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7e659b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:14, skipping insertion in model container [2022-11-19 07:33:14,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:33:14,655 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-19 07:33:14,657 INFO L158 Benchmark]: Toolchain (without parser) took 684.49ms. Allocated memory is still 121.6MB. Free memory was 84.8MB in the beginning and 88.9MB in the end (delta: -4.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:33:14,659 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 79.7MB. Free memory was 34.4MB in the beginning and 34.3MB in the end (delta: 45.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:33:14,660 INFO L158 Benchmark]: CACSL2BoogieTranslator took 679.25ms. Allocated memory is still 121.6MB. Free memory was 84.8MB in the beginning and 89.5MB in the end (delta: -4.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:33:14,662 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 79.7MB. Free memory was 34.4MB in the beginning and 34.3MB in the end (delta: 45.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 679.25ms. Allocated memory is still 121.6MB. Free memory was 84.8MB in the beginning and 89.5MB in the end (delta: -4.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:33:16,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:33:16,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:33:16,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:33:16,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:33:16,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:33:16,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:33:16,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:33:16,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:33:16,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:33:16,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:33:16,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:33:16,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:33:16,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:33:16,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:33:16,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:33:16,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:33:16,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:33:16,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:33:16,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:33:16,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:33:16,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:33:16,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:33:16,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:33:16,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:33:16,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:33:16,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:33:16,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:33:16,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:33:16,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:33:16,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:33:16,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:33:16,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:33:16,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:33:16,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:33:16,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:33:16,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:33:16,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:33:16,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:33:16,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:33:16,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:33:16,758 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-19 07:33:16,796 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:33:16,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:33:16,798 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:33:16,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:33:16,799 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:33:16,800 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:33:16,800 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:33:16,800 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:33:16,801 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:33:16,801 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:33:16,802 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:33:16,802 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:33:16,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 07:33:16,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 07:33:16,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:33:16,808 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:33:16,809 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:33:16,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:33:16,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:33:16,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:33:16,809 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 07:33:16,810 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 07:33:16,810 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 07:33:16,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:33:16,810 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:33:16,811 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:33:16,811 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:33:16,811 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:33:16,811 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:33:16,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:33:16,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:33:16,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:33:16,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:33:16,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:33:16,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:33:16,814 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:33:16,814 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:33:16,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:33:16,814 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:33:16,815 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_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 [2022-11-19 07:33:17,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:33:17,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:33:17,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:33:17,224 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:33:17,225 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:33:17,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2022-11-19 07:33:17,305 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/data/3161a828a/87628a92869f45e09d23ee9fe844eec3/FLAG2dda5d328 [2022-11-19 07:33:17,883 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:33:17,884 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2022-11-19 07:33:17,899 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/data/3161a828a/87628a92869f45e09d23ee9fe844eec3/FLAG2dda5d328 [2022-11-19 07:33:18,174 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/data/3161a828a/87628a92869f45e09d23ee9fe844eec3 [2022-11-19 07:33:18,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:33:18,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:33:18,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:33:18,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:33:18,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:33:18,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:18" (1/1) ... [2022-11-19 07:33:18,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bb4031f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:18, skipping insertion in model container [2022-11-19 07:33:18,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:18" (1/1) ... [2022-11-19 07:33:18,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:33:18,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:33:18,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:33:18,847 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 07:33:18,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:33:18,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:33:18,932 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:33:18,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:33:19,029 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:33:19,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:19 WrapperNode [2022-11-19 07:33:19,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:33:19,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:33:19,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:33:19,031 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:33:19,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:19" (1/1) ... [2022-11-19 07:33:19,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:19" (1/1) ... [2022-11-19 07:33:19,092 INFO L138 Inliner]: procedures = 174, calls = 117, calls flagged for inlining = 29, calls inlined = 14, statements flattened = 184 [2022-11-19 07:33:19,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:33:19,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:33:19,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:33:19,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:33:19,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:19" (1/1) ... [2022-11-19 07:33:19,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:19" (1/1) ... [2022-11-19 07:33:19,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:19" (1/1) ... [2022-11-19 07:33:19,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:19" (1/1) ... [2022-11-19 07:33:19,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:19" (1/1) ... [2022-11-19 07:33:19,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:19" (1/1) ... [2022-11-19 07:33:19,131 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:19" (1/1) ... [2022-11-19 07:33:19,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:19" (1/1) ... [2022-11-19 07:33:19,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:33:19,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:33:19,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:33:19,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:33:19,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:19" (1/1) ... [2022-11-19 07:33:19,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:33:19,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:33:19,196 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:33:19,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:33:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 07:33:19,245 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2022-11-19 07:33:19,249 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2022-11-19 07:33:19,249 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-11-19 07:33:19,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-11-19 07:33:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:33:19,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:33:19,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:33:19,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:33:19,251 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2022-11-19 07:33:19,251 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2022-11-19 07:33:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:33:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:33:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:33:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 07:33:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:33:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:33:19,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2022-11-19 07:33:19,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2022-11-19 07:33:19,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 07:33:19,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 07:33:19,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:33:19,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:33:19,468 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:33:19,470 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:33:20,347 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:33:20,355 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:33:20,355 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 07:33:20,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:20 BoogieIcfgContainer [2022-11-19 07:33:20,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:33:20,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:33:20,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:33:20,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:33:20,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:33:18" (1/3) ... [2022-11-19 07:33:20,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769bf6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:20, skipping insertion in model container [2022-11-19 07:33:20,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:19" (2/3) ... [2022-11-19 07:33:20,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769bf6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:20, skipping insertion in model container [2022-11-19 07:33:20,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:20" (3/3) ... [2022-11-19 07:33:20,366 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test23_4.i [2022-11-19 07:33:20,385 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:33:20,385 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2022-11-19 07:33:20,432 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:33:20,438 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;@1b7cfe0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:33:20,439 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2022-11-19 07:33:20,443 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 107 states have (on average 1.841121495327103) internal successors, (197), 183 states have internal predecessors, (197), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:33:20,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 07:33:20,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:20,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:20,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:33:20,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:20,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1838385922, now seen corresponding path program 1 times [2022-11-19 07:33:20,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:33:20,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053872518] [2022-11-19 07:33:20,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:20,469 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 [2022-11-19 07:33:20,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:33:20,470 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:33:20,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:20,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:33:20,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:33:20,774 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 [2022-11-19 07:33:20,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:20,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:33:20,857 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:33:20,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053872518] [2022-11-19 07:33:20,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053872518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:20,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:20,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:33:20,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128117555] [2022-11-19 07:33:20,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:20,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:33:20,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:33:20,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:33:20,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:33:20,911 INFO L87 Difference]: Start difference. First operand has 198 states, 107 states have (on average 1.841121495327103) internal successors, (197), 183 states have internal predecessors, (197), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:33:21,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:21,841 INFO L93 Difference]: Finished difference Result 225 states and 241 transitions. [2022-11-19 07:33:21,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:33:21,844 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-19 07:33:21,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:21,854 INFO L225 Difference]: With dead ends: 225 [2022-11-19 07:33:21,854 INFO L226 Difference]: Without dead ends: 221 [2022-11-19 07:33:21,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:33:21,859 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 28 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:21,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 813 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 07:33:21,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-19 07:33:21,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 205. [2022-11-19 07:33:21,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 113 states have (on average 1.7876106194690264) internal successors, (202), 188 states have internal predecessors, (202), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-19 07:33:21,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 221 transitions. [2022-11-19 07:33:21,908 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 221 transitions. Word has length 12 [2022-11-19 07:33:21,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:21,909 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 221 transitions. [2022-11-19 07:33:21,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:33:21,909 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 221 transitions. [2022-11-19 07:33:21,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 07:33:21,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:21,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:21,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:33:22,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:22,125 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:33:22,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:22,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1838385921, now seen corresponding path program 1 times [2022-11-19 07:33:22,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:33:22,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399879501] [2022-11-19 07:33:22,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:22,127 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 [2022-11-19 07:33:22,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:33:22,132 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:33:22,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:22,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 07:33:22,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:33:22,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:33:22,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:22,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:33:22,438 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:33:22,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399879501] [2022-11-19 07:33:22,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399879501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:22,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:22,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:33:22,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249617712] [2022-11-19 07:33:22,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:22,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:33:22,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:33:22,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:33:22,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:33:22,448 INFO L87 Difference]: Start difference. First operand 205 states and 221 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:33:23,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:23,539 INFO L93 Difference]: Finished difference Result 230 states and 245 transitions. [2022-11-19 07:33:23,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:33:23,543 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-19 07:33:23,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:23,545 INFO L225 Difference]: With dead ends: 230 [2022-11-19 07:33:23,545 INFO L226 Difference]: Without dead ends: 230 [2022-11-19 07:33:23,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:33:23,546 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 35 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:23,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1056 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-19 07:33:23,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-19 07:33:23,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 205. [2022-11-19 07:33:23,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 113 states have (on average 1.7699115044247788) internal successors, (200), 188 states have internal predecessors, (200), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-19 07:33:23,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 219 transitions. [2022-11-19 07:33:23,576 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 219 transitions. Word has length 12 [2022-11-19 07:33:23,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:23,577 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 219 transitions. [2022-11-19 07:33:23,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:33:23,577 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 219 transitions. [2022-11-19 07:33:23,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 07:33:23,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:23,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:23,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:23,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:23,795 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:33:23,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:23,796 INFO L85 PathProgramCache]: Analyzing trace with hash -95575587, now seen corresponding path program 1 times [2022-11-19 07:33:23,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:33:23,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621230420] [2022-11-19 07:33:23,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:23,798 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 [2022-11-19 07:33:23,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:33:23,799 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:33:23,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:23,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:33:23,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:33:23,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:23,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:33:23,949 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:33:23,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621230420] [2022-11-19 07:33:23,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621230420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:23,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:23,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:33:23,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490184679] [2022-11-19 07:33:23,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:23,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:33:23,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:33:23,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:33:23,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:33:23,954 INFO L87 Difference]: Start difference. First operand 205 states and 219 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:33:23,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:23,999 INFO L93 Difference]: Finished difference Result 217 states and 231 transitions. [2022-11-19 07:33:24,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:33:24,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-19 07:33:24,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:24,006 INFO L225 Difference]: With dead ends: 217 [2022-11-19 07:33:24,006 INFO L226 Difference]: Without dead ends: 217 [2022-11-19 07:33:24,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:33:24,013 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 20 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:24,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 812 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:33:24,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-19 07:33:24,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 196. [2022-11-19 07:33:24,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 109 states have (on average 1.761467889908257) internal successors, (192), 180 states have internal predecessors, (192), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-19 07:33:24,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 209 transitions. [2022-11-19 07:33:24,025 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 209 transitions. Word has length 12 [2022-11-19 07:33:24,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:24,026 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 209 transitions. [2022-11-19 07:33:24,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:33:24,026 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 209 transitions. [2022-11-19 07:33:24,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 07:33:24,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:24,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:24,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:24,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:24,238 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:33:24,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:24,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1838471554, now seen corresponding path program 1 times [2022-11-19 07:33:24,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:33:24,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93698216] [2022-11-19 07:33:24,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:24,240 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:24,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:33:24,243 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:33:24,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:24,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:33:24,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:33:24,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:24,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:33:24,377 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:33:24,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93698216] [2022-11-19 07:33:24,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93698216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:24,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:24,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:33:24,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652817022] [2022-11-19 07:33:24,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:24,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:33:24,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:33:24,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:33:24,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:33:24,383 INFO L87 Difference]: Start difference. First operand 196 states and 209 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:33:24,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:24,434 INFO L93 Difference]: Finished difference Result 217 states and 230 transitions. [2022-11-19 07:33:24,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:33:24,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-19 07:33:24,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:24,436 INFO L225 Difference]: With dead ends: 217 [2022-11-19 07:33:24,437 INFO L226 Difference]: Without dead ends: 217 [2022-11-19 07:33:24,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:33:24,446 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 121 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:24,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 750 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:33:24,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-19 07:33:24,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 196. [2022-11-19 07:33:24,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 109 states have (on average 1.7522935779816513) internal successors, (191), 180 states have internal predecessors, (191), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-19 07:33:24,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 208 transitions. [2022-11-19 07:33:24,472 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 208 transitions. Word has length 12 [2022-11-19 07:33:24,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:24,473 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 208 transitions. [2022-11-19 07:33:24,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:33:24,473 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 208 transitions. [2022-11-19 07:33:24,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 07:33:24,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:24,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:24,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:24,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:24,686 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:33:24,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:24,686 INFO L85 PathProgramCache]: Analyzing trace with hash -95661219, now seen corresponding path program 1 times [2022-11-19 07:33:24,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:33:24,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607461449] [2022-11-19 07:33:24,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:24,687 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 [2022-11-19 07:33:24,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:33:24,688 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:33:24,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:24,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:33:24,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:33:24,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:24,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:33:24,808 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:33:24,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607461449] [2022-11-19 07:33:24,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607461449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:24,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:24,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:33:24,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279890388] [2022-11-19 07:33:24,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:24,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:33:24,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:33:24,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:33:24,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:33:24,811 INFO L87 Difference]: Start difference. First operand 196 states and 208 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:33:24,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:24,859 INFO L93 Difference]: Finished difference Result 201 states and 212 transitions. [2022-11-19 07:33:24,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:33:24,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-19 07:33:24,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:24,861 INFO L225 Difference]: With dead ends: 201 [2022-11-19 07:33:24,861 INFO L226 Difference]: Without dead ends: 201 [2022-11-19 07:33:24,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:33:24,862 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 104 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:24,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 702 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:33:24,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-19 07:33:24,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 198. [2022-11-19 07:33:24,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 111 states have (on average 1.7387387387387387) internal successors, (193), 182 states have internal predecessors, (193), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-19 07:33:24,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 210 transitions. [2022-11-19 07:33:24,870 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 210 transitions. Word has length 12 [2022-11-19 07:33:24,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:24,870 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 210 transitions. [2022-11-19 07:33:24,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:33:24,871 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 210 transitions. [2022-11-19 07:33:24,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 07:33:24,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:24,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:24,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:25,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:25,083 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:33:25,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:25,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1329489612, now seen corresponding path program 1 times [2022-11-19 07:33:25,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:33:25,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767026778] [2022-11-19 07:33:25,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:25,085 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 [2022-11-19 07:33:25,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:33:25,085 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:33:25,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:25,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:33:25,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:33:25,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:25,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:33:25,179 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:33:25,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767026778] [2022-11-19 07:33:25,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767026778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:25,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:25,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:33:25,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049679756] [2022-11-19 07:33:25,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:25,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:33:25,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:33:25,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:33:25,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:33:25,181 INFO L87 Difference]: Start difference. First operand 198 states and 210 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:33:25,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:25,653 INFO L93 Difference]: Finished difference Result 210 states and 224 transitions. [2022-11-19 07:33:25,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:33:25,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-19 07:33:25,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:25,655 INFO L225 Difference]: With dead ends: 210 [2022-11-19 07:33:25,655 INFO L226 Difference]: Without dead ends: 202 [2022-11-19 07:33:25,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:33:25,656 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 51 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:25,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 366 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:33:25,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-19 07:33:25,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 192. [2022-11-19 07:33:25,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 106 states have (on average 1.7641509433962264) internal successors, (187), 177 states have internal predecessors, (187), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:33:25,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 203 transitions. [2022-11-19 07:33:25,671 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 203 transitions. Word has length 13 [2022-11-19 07:33:25,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:25,671 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 203 transitions. [2022-11-19 07:33:25,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:33:25,671 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 203 transitions. [2022-11-19 07:33:25,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 07:33:25,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:25,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:25,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:25,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:25,884 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:33:25,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:25,885 INFO L85 PathProgramCache]: Analyzing trace with hash -317607953, now seen corresponding path program 1 times [2022-11-19 07:33:25,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:33:25,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261844299] [2022-11-19 07:33:25,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:25,886 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 [2022-11-19 07:33:25,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:33:25,887 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:33:25,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:25,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-19 07:33:25,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:33:26,116 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_23 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_23))))) is different from true [2022-11-19 07:33:26,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:26,186 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 [2022-11-19 07:33:26,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:26,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:33:26,271 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:33:26,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261844299] [2022-11-19 07:33:26,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261844299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:26,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:26,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:33:26,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427499612] [2022-11-19 07:33:26,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:26,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:33:26,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:33:26,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:33:26,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2022-11-19 07:33:26,274 INFO L87 Difference]: Start difference. First operand 192 states and 203 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:33:27,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:27,403 INFO L93 Difference]: Finished difference Result 202 states and 216 transitions. [2022-11-19 07:33:27,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 07:33:27,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-11-19 07:33:27,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:27,405 INFO L225 Difference]: With dead ends: 202 [2022-11-19 07:33:27,405 INFO L226 Difference]: Without dead ends: 202 [2022-11-19 07:33:27,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=76, Unknown=1, NotChecked=18, Total=132 [2022-11-19 07:33:27,406 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 59 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 213 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:27,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 470 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 471 Invalid, 0 Unknown, 213 Unchecked, 1.0s Time] [2022-11-19 07:33:27,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-19 07:33:27,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 191. [2022-11-19 07:33:27,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 106 states have (on average 1.7547169811320755) internal successors, (186), 176 states have internal predecessors, (186), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:33:27,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 202 transitions. [2022-11-19 07:33:27,412 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 202 transitions. Word has length 16 [2022-11-19 07:33:27,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:27,412 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 202 transitions. [2022-11-19 07:33:27,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:33:27,413 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 202 transitions. [2022-11-19 07:33:27,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 07:33:27,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:27,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:27,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:27,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:27,625 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:33:27,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:27,625 INFO L85 PathProgramCache]: Analyzing trace with hash -317607954, now seen corresponding path program 1 times [2022-11-19 07:33:27,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:33:27,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542178569] [2022-11-19 07:33:27,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:27,626 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 [2022-11-19 07:33:27,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:33:27,628 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:33:27,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:27,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 07:33:27,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:33:27,795 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_38 (_ BitVec 1))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_38) |c_#valid|)))) is different from true [2022-11-19 07:33:27,835 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-19 07:33:27,835 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 [2022-11-19 07:33:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:27,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:33:27,877 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:33:27,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542178569] [2022-11-19 07:33:27,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542178569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:27,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:27,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:33:27,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935691227] [2022-11-19 07:33:27,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:27,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:33:27,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:33:27,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:33:27,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2022-11-19 07:33:27,879 INFO L87 Difference]: Start difference. First operand 191 states and 202 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:33:28,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:28,615 INFO L93 Difference]: Finished difference Result 243 states and 257 transitions. [2022-11-19 07:33:28,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 07:33:28,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2022-11-19 07:33:28,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:28,617 INFO L225 Difference]: With dead ends: 243 [2022-11-19 07:33:28,618 INFO L226 Difference]: Without dead ends: 243 [2022-11-19 07:33:28,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=61, Unknown=1, NotChecked=16, Total=110 [2022-11-19 07:33:28,618 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 280 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 202 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:28,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 349 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 341 Invalid, 0 Unknown, 202 Unchecked, 0.7s Time] [2022-11-19 07:33:28,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-19 07:33:28,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 201. [2022-11-19 07:33:28,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 115 states have (on average 1.7391304347826086) internal successors, (200), 185 states have internal predecessors, (200), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-19 07:33:28,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 218 transitions. [2022-11-19 07:33:28,626 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 218 transitions. Word has length 16 [2022-11-19 07:33:28,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:28,626 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 218 transitions. [2022-11-19 07:33:28,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:33:28,627 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 218 transitions. [2022-11-19 07:33:28,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-19 07:33:28,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:28,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:28,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:28,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:28,828 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:33:28,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:28,829 INFO L85 PathProgramCache]: Analyzing trace with hash -778576348, now seen corresponding path program 1 times [2022-11-19 07:33:28,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:33:28,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427052049] [2022-11-19 07:33:28,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:28,829 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 [2022-11-19 07:33:28,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:33:28,832 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:33:28,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:28,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:33:28,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:33:28,986 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 [2022-11-19 07:33:29,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:29,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:33:29,028 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:33:29,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427052049] [2022-11-19 07:33:29,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427052049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:29,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:29,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:33:29,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675366586] [2022-11-19 07:33:29,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:29,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:33:29,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:33:29,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:33:29,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:33:29,031 INFO L87 Difference]: Start difference. First operand 201 states and 218 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:33:29,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:29,796 INFO L93 Difference]: Finished difference Result 250 states and 274 transitions. [2022-11-19 07:33:29,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:33:29,797 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-11-19 07:33:29,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:29,798 INFO L225 Difference]: With dead ends: 250 [2022-11-19 07:33:29,798 INFO L226 Difference]: Without dead ends: 250 [2022-11-19 07:33:29,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:33:29,801 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 63 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:29,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 623 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 07:33:29,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-19 07:33:29,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 225. [2022-11-19 07:33:29,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 141 states have (on average 1.7588652482269505) internal successors, (248), 209 states have internal predecessors, (248), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-19 07:33:29,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 266 transitions. [2022-11-19 07:33:29,812 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 266 transitions. Word has length 25 [2022-11-19 07:33:29,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:29,812 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 266 transitions. [2022-11-19 07:33:29,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:33:29,813 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 266 transitions. [2022-11-19 07:33:29,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-19 07:33:29,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:29,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:29,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:30,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:30,027 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:33:30,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:30,028 INFO L85 PathProgramCache]: Analyzing trace with hash -778576347, now seen corresponding path program 1 times [2022-11-19 07:33:30,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:33:30,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603355782] [2022-11-19 07:33:30,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:30,028 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 [2022-11-19 07:33:30,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:33:30,029 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:33:30,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:30,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 07:33:30,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:33:30,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:33:30,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:30,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:33:30,270 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:33:30,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603355782] [2022-11-19 07:33:30,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603355782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:30,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:30,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:33:30,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56222381] [2022-11-19 07:33:30,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:30,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:33:30,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:33:30,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:33:30,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:33:30,273 INFO L87 Difference]: Start difference. First operand 225 states and 266 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:33:31,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:31,305 INFO L93 Difference]: Finished difference Result 282 states and 309 transitions. [2022-11-19 07:33:31,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:33:31,308 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-11-19 07:33:31,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:31,310 INFO L225 Difference]: With dead ends: 282 [2022-11-19 07:33:31,310 INFO L226 Difference]: Without dead ends: 282 [2022-11-19 07:33:31,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:33:31,311 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 97 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:31,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 621 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-19 07:33:31,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-11-19 07:33:31,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 227. [2022-11-19 07:33:31,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 144 states have (on average 1.7361111111111112) internal successors, (250), 210 states have internal predecessors, (250), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-19 07:33:31,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 271 transitions. [2022-11-19 07:33:31,319 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 271 transitions. Word has length 25 [2022-11-19 07:33:31,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:31,320 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 271 transitions. [2022-11-19 07:33:31,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:33:31,320 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 271 transitions. [2022-11-19 07:33:31,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:33:31,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:31,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:31,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:31,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:31,533 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:33:31,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:31,534 INFO L85 PathProgramCache]: Analyzing trace with hash -887499840, now seen corresponding path program 1 times [2022-11-19 07:33:31,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:33:31,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452491253] [2022-11-19 07:33:31,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:31,535 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 [2022-11-19 07:33:31,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:33:31,536 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:33:31,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:31,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:33:31,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:33:31,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:31,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:33:31,694 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:33:31,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452491253] [2022-11-19 07:33:31,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452491253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:31,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:31,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:33:31,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37652883] [2022-11-19 07:33:31,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:31,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:33:31,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:33:31,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:33:31,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:33:31,697 INFO L87 Difference]: Start difference. First operand 227 states and 271 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:33:31,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:31,811 INFO L93 Difference]: Finished difference Result 227 states and 270 transitions. [2022-11-19 07:33:31,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:33:31,812 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2022-11-19 07:33:31,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:31,813 INFO L225 Difference]: With dead ends: 227 [2022-11-19 07:33:31,813 INFO L226 Difference]: Without dead ends: 227 [2022-11-19 07:33:31,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:33:31,814 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 112 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:31,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 800 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:33:31,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-19 07:33:31,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2022-11-19 07:33:31,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 144 states have (on average 1.7291666666666667) internal successors, (249), 210 states have internal predecessors, (249), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-19 07:33:31,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 270 transitions. [2022-11-19 07:33:31,823 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 270 transitions. Word has length 27 [2022-11-19 07:33:31,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:31,823 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 270 transitions. [2022-11-19 07:33:31,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:33:31,823 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 270 transitions. [2022-11-19 07:33:31,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-19 07:33:31,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:31,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:31,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:32,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:32,037 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:33:32,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:32,038 INFO L85 PathProgramCache]: Analyzing trace with hash -542371696, now seen corresponding path program 1 times [2022-11-19 07:33:32,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:33:32,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440967359] [2022-11-19 07:33:32,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:32,039 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 [2022-11-19 07:33:32,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:33:32,040 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:33:32,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:32,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 07:33:32,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:33:32,269 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 [2022-11-19 07:33:32,330 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:33:32,331 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 [2022-11-19 07:33:32,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:32,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:33:32,417 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:33:32,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [440967359] [2022-11-19 07:33:32,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [440967359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:32,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:32,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:33:32,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273821370] [2022-11-19 07:33:32,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:32,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:33:32,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:33:32,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:33:32,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:33:32,419 INFO L87 Difference]: Start difference. First operand 227 states and 270 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:33:33,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:33,470 INFO L93 Difference]: Finished difference Result 240 states and 280 transitions. [2022-11-19 07:33:33,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:33:33,471 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-11-19 07:33:33,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:33,473 INFO L225 Difference]: With dead ends: 240 [2022-11-19 07:33:33,473 INFO L226 Difference]: Without dead ends: 240 [2022-11-19 07:33:33,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:33:33,474 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 187 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:33,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 511 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-19 07:33:33,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-19 07:33:33,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 223. [2022-11-19 07:33:33,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 144 states have (on average 1.6736111111111112) internal successors, (241), 206 states have internal predecessors, (241), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-19 07:33:33,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 262 transitions. [2022-11-19 07:33:33,491 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 262 transitions. Word has length 33 [2022-11-19 07:33:33,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:33,492 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 262 transitions. [2022-11-19 07:33:33,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:33:33,493 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 262 transitions. [2022-11-19 07:33:33,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-19 07:33:33,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:33,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:33,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-19 07:33:33,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:33,719 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:33:33,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:33,719 INFO L85 PathProgramCache]: Analyzing trace with hash -542371695, now seen corresponding path program 1 times [2022-11-19 07:33:33,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:33:33,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544215200] [2022-11-19 07:33:33,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:33,720 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:33,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:33:33,721 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:33:33,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:33,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-19 07:33:33,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:33:33,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:33:33,953 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 [2022-11-19 07:33:34,010 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_213 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| v_ArrVal_213) |c_#length|)) (= (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|) (_ bv0 1)))) is different from true [2022-11-19 07:33:34,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:34,053 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 [2022-11-19 07:33:34,074 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-19 07:33:34,075 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 [2022-11-19 07:33:34,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:34,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:33:34,167 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:33:34,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544215200] [2022-11-19 07:33:34,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544215200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:34,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:34,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:33:34,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967446238] [2022-11-19 07:33:34,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:34,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:33:34,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:33:34,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:33:34,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2022-11-19 07:33:34,169 INFO L87 Difference]: Start difference. First operand 223 states and 262 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:33:35,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:35,139 INFO L93 Difference]: Finished difference Result 278 states and 305 transitions. [2022-11-19 07:33:35,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:33:35,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-11-19 07:33:35,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:35,141 INFO L225 Difference]: With dead ends: 278 [2022-11-19 07:33:35,141 INFO L226 Difference]: Without dead ends: 278 [2022-11-19 07:33:35,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=29, Unknown=1, NotChecked=10, Total=56 [2022-11-19 07:33:35,142 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 178 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 203 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:35,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 366 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 396 Invalid, 0 Unknown, 203 Unchecked, 0.9s Time] [2022-11-19 07:33:35,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-19 07:33:35,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 223. [2022-11-19 07:33:35,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 144 states have (on average 1.6458333333333333) internal successors, (237), 206 states have internal predecessors, (237), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-19 07:33:35,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 258 transitions. [2022-11-19 07:33:35,151 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 258 transitions. Word has length 33 [2022-11-19 07:33:35,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:35,152 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 258 transitions. [2022-11-19 07:33:35,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:33:35,152 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 258 transitions. [2022-11-19 07:33:35,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-19 07:33:35,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:35,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:35,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:35,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:35,363 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:33:35,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:35,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1528197373, now seen corresponding path program 1 times [2022-11-19 07:33:35,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:33:35,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164823240] [2022-11-19 07:33:35,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:35,365 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:35,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:33:35,366 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:33:35,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:35,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:33:35,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:33:35,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:35,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:33:35,549 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:33:35,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164823240] [2022-11-19 07:33:35,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164823240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:35,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:35,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:33:35,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399220936] [2022-11-19 07:33:35,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:35,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:33:35,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:33:35,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:33:35,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:33:35,552 INFO L87 Difference]: Start difference. First operand 223 states and 258 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:33:35,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:35,577 INFO L93 Difference]: Finished difference Result 265 states and 304 transitions. [2022-11-19 07:33:35,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:33:35,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2022-11-19 07:33:35,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:35,580 INFO L225 Difference]: With dead ends: 265 [2022-11-19 07:33:35,580 INFO L226 Difference]: Without dead ends: 265 [2022-11-19 07:33:35,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:33:35,581 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 37 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:35,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 568 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:33:35,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-11-19 07:33:35,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 227. [2022-11-19 07:33:35,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 148 states have (on average 1.6283783783783783) internal successors, (241), 210 states have internal predecessors, (241), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-19 07:33:35,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 262 transitions. [2022-11-19 07:33:35,588 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 262 transitions. Word has length 35 [2022-11-19 07:33:35,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:35,589 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 262 transitions. [2022-11-19 07:33:35,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:33:35,589 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 262 transitions. [2022-11-19 07:33:35,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-19 07:33:35,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:35,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:35,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:35,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:35,803 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:33:35,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:35,803 INFO L85 PathProgramCache]: Analyzing trace with hash -129478379, now seen corresponding path program 1 times [2022-11-19 07:33:35,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:33:35,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013921960] [2022-11-19 07:33:35,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:35,804 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 [2022-11-19 07:33:35,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:33:35,805 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:33:35,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:35,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:33:35,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:33:36,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:36,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:33:36,463 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:33:36,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013921960] [2022-11-19 07:33:36,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013921960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:36,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:36,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:33:36,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352266351] [2022-11-19 07:33:36,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:36,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:33:36,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:33:36,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:33:36,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:33:36,465 INFO L87 Difference]: Start difference. First operand 227 states and 262 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:33:36,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:36,475 INFO L93 Difference]: Finished difference Result 246 states and 282 transitions. [2022-11-19 07:33:36,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:33:36,476 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-11-19 07:33:36,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:36,478 INFO L225 Difference]: With dead ends: 246 [2022-11-19 07:33:36,478 INFO L226 Difference]: Without dead ends: 246 [2022-11-19 07:33:36,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:33:36,479 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 27 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:36,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1002 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 69 Unchecked, 0.0s Time] [2022-11-19 07:33:36,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-19 07:33:36,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2022-11-19 07:33:36,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 166 states have (on average 1.572289156626506) internal successors, (261), 228 states have internal predecessors, (261), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-19 07:33:36,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 282 transitions. [2022-11-19 07:33:36,486 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 282 transitions. Word has length 36 [2022-11-19 07:33:36,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:36,487 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 282 transitions. [2022-11-19 07:33:36,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:33:36,487 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 282 transitions. [2022-11-19 07:33:36,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-19 07:33:36,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:36,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:36,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:36,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:36,708 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:33:36,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:36,709 INFO L85 PathProgramCache]: Analyzing trace with hash 189837640, now seen corresponding path program 1 times [2022-11-19 07:33:36,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:33:36,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187049350] [2022-11-19 07:33:36,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:36,709 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 [2022-11-19 07:33:36,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:33:36,711 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:33:36,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:36,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:33:36,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:33:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:36,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:33:36,881 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:33:36,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187049350] [2022-11-19 07:33:36,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187049350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:36,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:36,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:33:36,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846206518] [2022-11-19 07:33:36,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:36,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:33:36,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:33:36,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:33:36,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:33:36,884 INFO L87 Difference]: Start difference. First operand 246 states and 282 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:33:36,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:36,942 INFO L93 Difference]: Finished difference Result 269 states and 307 transitions. [2022-11-19 07:33:36,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:33:36,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-19 07:33:36,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:36,944 INFO L225 Difference]: With dead ends: 269 [2022-11-19 07:33:36,944 INFO L226 Difference]: Without dead ends: 269 [2022-11-19 07:33:36,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:33:36,945 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 43 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:36,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 566 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:33:36,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-11-19 07:33:36,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 248. [2022-11-19 07:33:36,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 168 states have (on average 1.5654761904761905) internal successors, (263), 230 states have internal predecessors, (263), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-19 07:33:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 284 transitions. [2022-11-19 07:33:36,956 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 284 transitions. Word has length 40 [2022-11-19 07:33:36,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:36,958 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 284 transitions. [2022-11-19 07:33:36,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:33:36,958 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 284 transitions. [2022-11-19 07:33:36,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-19 07:33:36,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:36,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:36,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:37,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:37,176 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:33:37,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:37,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1958974084, now seen corresponding path program 1 times [2022-11-19 07:33:37,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:33:37,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028200866] [2022-11-19 07:33:37,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:37,177 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 [2022-11-19 07:33:37,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:33:37,179 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:33:37,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:37,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:33:37,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:33:37,438 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 [2022-11-19 07:33:37,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:37,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:33:37,523 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:33:37,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028200866] [2022-11-19 07:33:37,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028200866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:37,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:37,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:33:37,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324967614] [2022-11-19 07:33:37,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:37,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:33:37,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:33:37,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:33:37,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:33:37,525 INFO L87 Difference]: Start difference. First operand 248 states and 284 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:33:38,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:38,578 INFO L93 Difference]: Finished difference Result 290 states and 319 transitions. [2022-11-19 07:33:38,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:33:38,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-11-19 07:33:38,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:38,581 INFO L225 Difference]: With dead ends: 290 [2022-11-19 07:33:38,581 INFO L226 Difference]: Without dead ends: 290 [2022-11-19 07:33:38,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:33:38,582 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 118 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:38,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 801 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-19 07:33:38,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-11-19 07:33:38,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 247. [2022-11-19 07:33:38,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 168 states have (on average 1.5476190476190477) internal successors, (260), 229 states have internal predecessors, (260), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-19 07:33:38,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 281 transitions. [2022-11-19 07:33:38,590 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 281 transitions. Word has length 42 [2022-11-19 07:33:38,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:38,590 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 281 transitions. [2022-11-19 07:33:38,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:33:38,591 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 281 transitions. [2022-11-19 07:33:38,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-19 07:33:38,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:38,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:38,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:38,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:38,805 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:33:38,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:38,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1958974083, now seen corresponding path program 1 times [2022-11-19 07:33:38,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:33:38,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592390986] [2022-11-19 07:33:38,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:38,807 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 [2022-11-19 07:33:38,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:33:38,807 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:33:38,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:39,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-19 07:33:39,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:33:39,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:33:39,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:39,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:33:39,264 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:33:39,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592390986] [2022-11-19 07:33:39,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592390986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:39,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:39,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:33:39,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512928380] [2022-11-19 07:33:39,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:39,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:33:39,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:33:39,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:33:39,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:33:39,266 INFO L87 Difference]: Start difference. First operand 247 states and 281 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:33:40,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:40,573 INFO L93 Difference]: Finished difference Result 316 states and 345 transitions. [2022-11-19 07:33:40,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:33:40,574 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-11-19 07:33:40,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:40,575 INFO L225 Difference]: With dead ends: 316 [2022-11-19 07:33:40,575 INFO L226 Difference]: Without dead ends: 316 [2022-11-19 07:33:40,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:33:40,576 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 142 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:40,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 827 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-19 07:33:40,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-11-19 07:33:40,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 247. [2022-11-19 07:33:40,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 168 states have (on average 1.5357142857142858) internal successors, (258), 229 states have internal predecessors, (258), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-19 07:33:40,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 279 transitions. [2022-11-19 07:33:40,584 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 279 transitions. Word has length 42 [2022-11-19 07:33:40,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:40,585 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 279 transitions. [2022-11-19 07:33:40,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:33:40,585 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 279 transitions. [2022-11-19 07:33:40,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-19 07:33:40,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:40,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:40,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:40,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:40,799 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:33:40,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:40,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2045419631, now seen corresponding path program 1 times [2022-11-19 07:33:40,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:33:40,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297505240] [2022-11-19 07:33:40,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:40,801 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 [2022-11-19 07:33:40,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:33:40,802 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:33:40,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:41,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-19 07:33:41,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:33:41,157 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-19 07:33:41,157 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 [2022-11-19 07:33:41,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-19 07:33:41,345 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-19 07:33:41,345 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 [2022-11-19 07:33:41,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:41,724 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-19 07:33:41,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 31 [2022-11-19 07:33:41,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:41,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:33:41,804 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:33:41,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297505240] [2022-11-19 07:33:41,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297505240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:41,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:41,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-19 07:33:41,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932212848] [2022-11-19 07:33:41,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:41,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-19 07:33:41,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:33:41,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-19 07:33:41,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:33:41,806 INFO L87 Difference]: Start difference. First operand 247 states and 279 transitions. Second operand has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:33:42,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:42,760 INFO L93 Difference]: Finished difference Result 352 states and 385 transitions. [2022-11-19 07:33:42,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-19 07:33:42,761 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2022-11-19 07:33:42,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:42,762 INFO L225 Difference]: With dead ends: 352 [2022-11-19 07:33:42,762 INFO L226 Difference]: Without dead ends: 352 [2022-11-19 07:33:42,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-11-19 07:33:42,763 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 202 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 529 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:42,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 947 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 430 Invalid, 0 Unknown, 529 Unchecked, 0.7s Time] [2022-11-19 07:33:42,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-11-19 07:33:42,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 285. [2022-11-19 07:33:42,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 201 states have (on average 1.5572139303482586) internal successors, (313), 263 states have internal predecessors, (313), 11 states have call successors, (11), 10 states have call predecessors, (11), 12 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2022-11-19 07:33:42,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 339 transitions. [2022-11-19 07:33:42,782 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 339 transitions. Word has length 42 [2022-11-19 07:33:42,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:42,782 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 339 transitions. [2022-11-19 07:33:42,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:33:42,783 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 339 transitions. [2022-11-19 07:33:42,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-19 07:33:42,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:42,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:42,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:42,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:42,997 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:33:42,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:42,998 INFO L85 PathProgramCache]: Analyzing trace with hash 2045419632, now seen corresponding path program 1 times [2022-11-19 07:33:42,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:33:42,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835889396] [2022-11-19 07:33:42,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:42,998 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 [2022-11-19 07:33:42,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:33:42,999 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:33:43,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:43,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-19 07:33:43,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:33:45,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:45,429 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 [2022-11-19 07:33:45,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:45,566 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 [2022-11-19 07:33:45,770 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 07:33:45,770 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 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-19 07:33:46,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:46,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:33:46,023 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:33:46,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835889396] [2022-11-19 07:33:46,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835889396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:46,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:46,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-19 07:33:46,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487975891] [2022-11-19 07:33:46,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:46,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 07:33:46,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:33:46,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 07:33:46,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=104, Unknown=2, NotChecked=0, Total=132 [2022-11-19 07:33:46,025 INFO L87 Difference]: Start difference. First operand 285 states and 339 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:33:52,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:52,441 INFO L93 Difference]: Finished difference Result 336 states and 395 transitions. [2022-11-19 07:33:52,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 07:33:52,442 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2022-11-19 07:33:52,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:52,444 INFO L225 Difference]: With dead ends: 336 [2022-11-19 07:33:52,444 INFO L226 Difference]: Without dead ends: 336 [2022-11-19 07:33:52,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=74, Invalid=300, Unknown=6, NotChecked=0, Total=380 [2022-11-19 07:33:52,445 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 566 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 233 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:52,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 519 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 858 Invalid, 0 Unknown, 233 Unchecked, 2.1s Time] [2022-11-19 07:33:52,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-11-19 07:33:52,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 283. [2022-11-19 07:33:52,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 201 states have (on average 1.537313432835821) internal successors, (309), 261 states have internal predecessors, (309), 11 states have call successors, (11), 10 states have call predecessors, (11), 12 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2022-11-19 07:33:52,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 335 transitions. [2022-11-19 07:33:52,453 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 335 transitions. Word has length 42 [2022-11-19 07:33:52,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:52,454 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 335 transitions. [2022-11-19 07:33:52,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:33:52,454 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 335 transitions. [2022-11-19 07:33:52,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-19 07:33:52,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:52,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:52,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:52,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:52,668 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:33:52,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:52,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1016480774, now seen corresponding path program 1 times [2022-11-19 07:33:52,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:33:52,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641110318] [2022-11-19 07:33:52,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:52,669 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 [2022-11-19 07:33:52,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:33:52,670 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:33:52,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:52,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:33:52,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:33:52,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:52,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:33:52,872 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:33:52,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641110318] [2022-11-19 07:33:52,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641110318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:52,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:52,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:33:52,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152822566] [2022-11-19 07:33:52,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:52,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:33:52,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:33:52,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:33:52,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:33:52,875 INFO L87 Difference]: Start difference. First operand 283 states and 335 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:33:52,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:52,912 INFO L93 Difference]: Finished difference Result 307 states and 358 transitions. [2022-11-19 07:33:52,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:33:52,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-11-19 07:33:52,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:52,914 INFO L225 Difference]: With dead ends: 307 [2022-11-19 07:33:52,915 INFO L226 Difference]: Without dead ends: 307 [2022-11-19 07:33:52,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:33:52,916 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 48 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:52,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 546 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:33:52,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-19 07:33:52,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 285. [2022-11-19 07:33:52,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 203 states have (on average 1.5270935960591132) internal successors, (310), 263 states have internal predecessors, (310), 11 states have call successors, (11), 10 states have call predecessors, (11), 12 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2022-11-19 07:33:52,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 336 transitions. [2022-11-19 07:33:52,926 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 336 transitions. Word has length 43 [2022-11-19 07:33:52,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:52,926 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 336 transitions. [2022-11-19 07:33:52,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:33:52,926 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 336 transitions. [2022-11-19 07:33:52,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-19 07:33:52,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:52,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:52,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:53,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:53,140 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:33:53,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:53,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1899527314, now seen corresponding path program 1 times [2022-11-19 07:33:53,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:33:53,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215795114] [2022-11-19 07:33:53,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:53,141 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:53,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:33:53,142 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:33:53,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:33:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:53,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-19 07:33:53,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:33:53,431 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 [2022-11-19 07:33:53,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:33:53,741 INFO L321 Elim1Store]: treesize reduction 70, result has 30.7 percent of original size [2022-11-19 07:33:53,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 51 [2022-11-19 07:33:53,819 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-19 07:33:53,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-19 07:33:54,081 INFO L321 Elim1Store]: treesize reduction 92, result has 31.3 percent of original size [2022-11-19 07:33:54,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 37 treesize of output 67 [2022-11-19 07:33:54,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-19 07:33:54,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-19 07:33:54,946 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-19 07:33:54,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 48 [2022-11-19 07:33:55,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-19 07:33:55,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:55,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:33:55,194 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:33:55,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215795114] [2022-11-19 07:33:55,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [215795114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:55,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:55,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-19 07:33:55,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050140417] [2022-11-19 07:33:55,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:55,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-19 07:33:55,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:33:55,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-19 07:33:55,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-11-19 07:33:55,196 INFO L87 Difference]: Start difference. First operand 285 states and 336 transitions. Second operand has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:33:56,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:56,839 INFO L93 Difference]: Finished difference Result 313 states and 348 transitions. [2022-11-19 07:33:56,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-19 07:33:56,839 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-19 07:33:56,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:56,840 INFO L225 Difference]: With dead ends: 313 [2022-11-19 07:33:56,841 INFO L226 Difference]: Without dead ends: 313 [2022-11-19 07:33:56,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2022-11-19 07:33:56,841 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 212 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:56,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 951 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 603 Invalid, 0 Unknown, 155 Unchecked, 1.3s Time] [2022-11-19 07:33:56,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-19 07:33:56,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 285. [2022-11-19 07:33:56,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 203 states have (on average 1.522167487684729) internal successors, (309), 263 states have internal predecessors, (309), 11 states have call successors, (11), 10 states have call predecessors, (11), 12 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2022-11-19 07:33:56,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 335 transitions. [2022-11-19 07:33:56,850 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 335 transitions. Word has length 45 [2022-11-19 07:33:56,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:56,850 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 335 transitions. [2022-11-19 07:33:56,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:33:56,850 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 335 transitions. [2022-11-19 07:33:56,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-19 07:33:56,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:56,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:56,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-19 07:33:57,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:33:57,064 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:33:57,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:57,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1899527313, now seen corresponding path program 1 times [2022-11-19 07:33:57,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:33:57,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856713168] [2022-11-19 07:33:57,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:57,065 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 [2022-11-19 07:33:57,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:33:57,066 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:33:57,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-19 07:33:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:57,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-19 07:33:57,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:33:57,430 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 [2022-11-19 07:33:57,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:33:57,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:33:57,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:33:58,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:33:58,071 INFO L321 Elim1Store]: treesize reduction 48, result has 29.4 percent of original size [2022-11-19 07:33:58,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 47 [2022-11-19 07:33:58,091 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 [2022-11-19 07:33:58,224 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 9 treesize of output 3 [2022-11-19 07:33:58,244 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-19 07:33:58,244 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 19 treesize of output 11 [2022-11-19 07:33:58,508 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-19 07:33:58,508 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 26 [2022-11-19 07:33:58,569 INFO L321 Elim1Store]: treesize reduction 26, result has 33.3 percent of original size [2022-11-19 07:33:58,569 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 24 treesize of output 26 [2022-11-19 07:33:58,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:33:58,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-19 07:33:58,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-19 07:33:58,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:33:59,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-19 07:33:59,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-19 07:33:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:33:59,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:33:59,379 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:33:59,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856713168] [2022-11-19 07:33:59,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856713168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:59,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:59,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-19 07:33:59,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355136283] [2022-11-19 07:33:59,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:59,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-19 07:33:59,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:33:59,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-19 07:33:59,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2022-11-19 07:33:59,380 INFO L87 Difference]: Start difference. First operand 285 states and 335 transitions. Second operand has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:34:02,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:34:02,845 INFO L93 Difference]: Finished difference Result 339 states and 372 transitions. [2022-11-19 07:34:02,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-19 07:34:02,846 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-19 07:34:02,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:34:02,848 INFO L225 Difference]: With dead ends: 339 [2022-11-19 07:34:02,848 INFO L226 Difference]: Without dead ends: 339 [2022-11-19 07:34:02,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=152, Invalid=1038, Unknown=0, NotChecked=0, Total=1190 [2022-11-19 07:34:02,849 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 230 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 414 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:34:02,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 1653 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1026 Invalid, 0 Unknown, 414 Unchecked, 2.4s Time] [2022-11-19 07:34:02,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-11-19 07:34:02,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 285. [2022-11-19 07:34:02,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 203 states have (on average 1.5172413793103448) internal successors, (308), 263 states have internal predecessors, (308), 11 states have call successors, (11), 10 states have call predecessors, (11), 12 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2022-11-19 07:34:02,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 334 transitions. [2022-11-19 07:34:02,858 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 334 transitions. Word has length 45 [2022-11-19 07:34:02,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:34:02,858 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 334 transitions. [2022-11-19 07:34:02,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:34:02,859 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 334 transitions. [2022-11-19 07:34:02,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-19 07:34:02,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:34:02,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:34:02,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-19 07:34:03,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:34:03,072 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:34:03,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:34:03,073 INFO L85 PathProgramCache]: Analyzing trace with hash 218805826, now seen corresponding path program 1 times [2022-11-19 07:34:03,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:34:03,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850097591] [2022-11-19 07:34:03,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:34:03,074 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 [2022-11-19 07:34:03,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:34:03,075 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:34:03,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-19 07:34:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:34:03,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-19 07:34:03,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:34:03,632 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-19 07:34:03,632 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 [2022-11-19 07:34:03,750 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:34:03,751 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 [2022-11-19 07:34:03,987 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-19 07:34:03,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2022-11-19 07:34:04,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:34:04,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-19 07:34:04,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:34:04,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:34:04,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:34:04,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:34:05,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-19 07:34:05,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:34:05,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:34:05,490 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:34:05,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850097591] [2022-11-19 07:34:05,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850097591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:34:05,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:34:05,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-19 07:34:05,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205047596] [2022-11-19 07:34:05,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:34:05,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-19 07:34:05,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:34:05,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-19 07:34:05,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-19 07:34:05,493 INFO L87 Difference]: Start difference. First operand 285 states and 334 transitions. Second operand has 19 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:34:06,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:34:06,429 INFO L93 Difference]: Finished difference Result 300 states and 355 transitions. [2022-11-19 07:34:06,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-19 07:34:06,430 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2022-11-19 07:34:06,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:34:06,432 INFO L225 Difference]: With dead ends: 300 [2022-11-19 07:34:06,432 INFO L226 Difference]: Without dead ends: 300 [2022-11-19 07:34:06,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2022-11-19 07:34:06,433 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 72 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 904 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:34:06,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 1334 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 434 Invalid, 0 Unknown, 904 Unchecked, 0.7s Time] [2022-11-19 07:34:06,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-19 07:34:06,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 289. [2022-11-19 07:34:06,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 207 states have (on average 1.5120772946859904) internal successors, (313), 267 states have internal predecessors, (313), 11 states have call successors, (11), 10 states have call predecessors, (11), 12 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2022-11-19 07:34:06,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 339 transitions. [2022-11-19 07:34:06,441 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 339 transitions. Word has length 45 [2022-11-19 07:34:06,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:34:06,442 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 339 transitions. [2022-11-19 07:34:06,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:34:06,442 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 339 transitions. [2022-11-19 07:34:06,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-19 07:34:06,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:34:06,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:34:06,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-19 07:34:06,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:34:06,657 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:34:06,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:34:06,658 INFO L85 PathProgramCache]: Analyzing trace with hash 218805827, now seen corresponding path program 1 times [2022-11-19 07:34:06,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:34:06,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265231089] [2022-11-19 07:34:06,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:34:06,659 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 [2022-11-19 07:34:06,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:34:06,660 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:34:06,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-19 07:34:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:34:07,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-19 07:34:07,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:34:09,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:09,322 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 [2022-11-19 07:34:09,494 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:34:09,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-19 07:34:09,526 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:34:09,526 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 [2022-11-19 07:34:09,806 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:34:09,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-19 07:34:09,865 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-19 07:34:09,866 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 20 treesize of output 22 [2022-11-19 07:34:10,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:34:10,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:34:10,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-19 07:34:10,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-19 07:34:10,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:34:10,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:34:10,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:34:10,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:34:10,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:34:10,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:34:10,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:34:10,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:34:11,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-19 07:34:11,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-19 07:34:11,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:34:11,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:34:11,234 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:34:11,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265231089] [2022-11-19 07:34:11,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265231089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:34:11,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:34:11,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-19 07:34:11,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595672130] [2022-11-19 07:34:11,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:34:11,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-19 07:34:11,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:34:11,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-19 07:34:11,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=333, Unknown=3, NotChecked=0, Total=380 [2022-11-19 07:34:11,236 INFO L87 Difference]: Start difference. First operand 289 states and 339 transitions. Second operand has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 17 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:34:17,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:34:17,052 INFO L93 Difference]: Finished difference Result 423 states and 488 transitions. [2022-11-19 07:34:17,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-19 07:34:17,053 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 17 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-19 07:34:17,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:34:17,055 INFO L225 Difference]: With dead ends: 423 [2022-11-19 07:34:17,055 INFO L226 Difference]: Without dead ends: 423 [2022-11-19 07:34:17,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=102, Invalid=763, Unknown=5, NotChecked=0, Total=870 [2022-11-19 07:34:17,056 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 320 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1016 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:34:17,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 1455 Invalid, 2426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1378 Invalid, 0 Unknown, 1016 Unchecked, 3.1s Time] [2022-11-19 07:34:17,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-19 07:34:17,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 341. [2022-11-19 07:34:17,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 253 states have (on average 1.5533596837944663) internal successors, (393), 315 states have internal predecessors, (393), 14 states have call successors, (14), 12 states have call predecessors, (14), 15 states have return successors, (20), 13 states have call predecessors, (20), 14 states have call successors, (20) [2022-11-19 07:34:17,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 427 transitions. [2022-11-19 07:34:17,067 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 427 transitions. Word has length 45 [2022-11-19 07:34:17,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:34:17,067 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 427 transitions. [2022-11-19 07:34:17,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 17 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:34:17,068 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 427 transitions. [2022-11-19 07:34:17,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-19 07:34:17,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:34:17,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:34:17,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-19 07:34:17,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:34:17,284 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:34:17,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:34:17,284 INFO L85 PathProgramCache]: Analyzing trace with hash -84648785, now seen corresponding path program 1 times [2022-11-19 07:34:17,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:34:17,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [172072073] [2022-11-19 07:34:17,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:34:17,285 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 [2022-11-19 07:34:17,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:34:17,286 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:34:17,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-19 07:34:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:34:17,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-19 07:34:17,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:34:17,844 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-19 07:34:17,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 37 [2022-11-19 07:34:18,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:34:18,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 07:34:18,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-19 07:34:18,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:34:18,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:18,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:18,893 INFO L321 Elim1Store]: treesize reduction 48, result has 29.4 percent of original size [2022-11-19 07:34:18,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 57 [2022-11-19 07:34:19,064 INFO L321 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-19 07:34:19,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2022-11-19 07:34:19,397 INFO L321 Elim1Store]: treesize reduction 22, result has 37.1 percent of original size [2022-11-19 07:34:19,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 29 [2022-11-19 07:34:19,671 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 07:34:19,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 46 [2022-11-19 07:34:19,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:34:19,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:34:19,862 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 07:34:19,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 46 [2022-11-19 07:34:20,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-19 07:34:20,612 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:34:20,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 25 [2022-11-19 07:34:20,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:34:20,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:34:20,770 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:34:20,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [172072073] [2022-11-19 07:34:20,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [172072073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:34:20,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:34:20,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-19 07:34:20,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325020905] [2022-11-19 07:34:20,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:34:20,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-19 07:34:20,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:34:20,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-19 07:34:20,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2022-11-19 07:34:20,773 INFO L87 Difference]: Start difference. First operand 341 states and 427 transitions. Second operand has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:34:25,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:34:25,925 INFO L93 Difference]: Finished difference Result 372 states and 456 transitions. [2022-11-19 07:34:25,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-19 07:34:25,926 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2022-11-19 07:34:25,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:34:25,927 INFO L225 Difference]: With dead ends: 372 [2022-11-19 07:34:25,927 INFO L226 Difference]: Without dead ends: 372 [2022-11-19 07:34:25,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=198, Invalid=1608, Unknown=0, NotChecked=0, Total=1806 [2022-11-19 07:34:25,928 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 143 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1927 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 225 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:34:25,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 1927 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1278 Invalid, 0 Unknown, 225 Unchecked, 3.2s Time] [2022-11-19 07:34:25,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-11-19 07:34:25,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 345. [2022-11-19 07:34:25,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 256 states have (on average 1.55078125) internal successors, (397), 318 states have internal predecessors, (397), 15 states have call successors, (15), 12 states have call predecessors, (15), 15 states have return successors, (21), 14 states have call predecessors, (21), 15 states have call successors, (21) [2022-11-19 07:34:25,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 433 transitions. [2022-11-19 07:34:25,956 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 433 transitions. Word has length 47 [2022-11-19 07:34:25,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:34:25,956 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 433 transitions. [2022-11-19 07:34:25,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:34:25,958 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 433 transitions. [2022-11-19 07:34:25,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-19 07:34:25,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:34:25,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:34:25,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-19 07:34:26,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:34:26,172 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting free_reportsErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:34:26,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:34:26,172 INFO L85 PathProgramCache]: Analyzing trace with hash -84648784, now seen corresponding path program 1 times [2022-11-19 07:34:26,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:34:26,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102846406] [2022-11-19 07:34:26,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:34:26,173 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 [2022-11-19 07:34:26,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:34:26,174 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:34:26,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-19 07:34:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:34:26,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-19 07:34:26,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:34:26,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:34:26,794 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-19 07:34:26,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-19 07:34:27,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:34:27,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:34:27,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 07:34:27,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-19 07:34:27,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-19 07:34:27,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 07:34:28,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:28,067 INFO L321 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2022-11-19 07:34:28,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 47 [2022-11-19 07:34:28,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-19 07:34:28,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-19 07:34:28,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-19 07:34:28,711 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-19 07:34:28,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-19 07:34:28,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-19 07:34:29,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-19 07:34:29,076 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 07:34:29,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 62 [2022-11-19 07:34:29,301 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-19 07:34:29,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 62 [2022-11-19 07:34:29,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-19 07:34:30,377 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-19 07:34:30,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 31 [2022-11-19 07:34:30,383 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:34:30,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 23 [2022-11-19 07:34:30,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:34:30,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:34:30,587 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:34:30,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102846406] [2022-11-19 07:34:30,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102846406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:34:30,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:34:30,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-19 07:34:30,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615995916] [2022-11-19 07:34:30,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:34:30,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-19 07:34:30,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:34:30,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-19 07:34:30,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2022-11-19 07:34:30,589 INFO L87 Difference]: Start difference. First operand 345 states and 433 transitions. Second operand has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:34:36,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:34:36,130 INFO L93 Difference]: Finished difference Result 353 states and 423 transitions. [2022-11-19 07:34:36,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-19 07:34:36,131 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2022-11-19 07:34:36,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:34:36,133 INFO L225 Difference]: With dead ends: 353 [2022-11-19 07:34:36,133 INFO L226 Difference]: Without dead ends: 353 [2022-11-19 07:34:36,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=181, Invalid=1541, Unknown=0, NotChecked=0, Total=1722 [2022-11-19 07:34:36,134 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 112 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 370 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:34:36,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 1638 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1334 Invalid, 0 Unknown, 370 Unchecked, 3.6s Time] [2022-11-19 07:34:36,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-11-19 07:34:36,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 333. [2022-11-19 07:34:36,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 246 states have (on average 1.5365853658536586) internal successors, (378), 307 states have internal predecessors, (378), 14 states have call successors, (14), 12 states have call predecessors, (14), 14 states have return successors, (19), 13 states have call predecessors, (19), 14 states have call successors, (19) [2022-11-19 07:34:36,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 411 transitions. [2022-11-19 07:34:36,143 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 411 transitions. Word has length 47 [2022-11-19 07:34:36,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:34:36,143 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 411 transitions. [2022-11-19 07:34:36,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:34:36,143 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 411 transitions. [2022-11-19 07:34:36,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-19 07:34:36,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:34:36,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:34:36,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-19 07:34:36,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:34:36,358 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:34:36,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:34:36,359 INFO L85 PathProgramCache]: Analyzing trace with hash -180994493, now seen corresponding path program 1 times [2022-11-19 07:34:36,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:34:36,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777540534] [2022-11-19 07:34:36,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:34:36,359 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 [2022-11-19 07:34:36,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:34:36,360 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:34:36,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-19 07:34:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:34:36,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-19 07:34:36,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:34:36,992 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 [2022-11-19 07:34:37,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:34:37,316 INFO L321 Elim1Store]: treesize reduction 70, result has 30.7 percent of original size [2022-11-19 07:34:37,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 51 [2022-11-19 07:34:37,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:37,460 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-19 07:34:37,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-19 07:34:37,722 INFO L321 Elim1Store]: treesize reduction 102, result has 29.2 percent of original size [2022-11-19 07:34:37,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 37 treesize of output 67 [2022-11-19 07:34:38,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2022-11-19 07:34:38,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:34:38,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:38,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:38,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:38,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:38,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-19 07:34:38,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:38,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:38,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:38,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:38,596 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:34:38,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 69 [2022-11-19 07:34:38,968 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-19 07:34:38,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 07:34:38,983 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 22 treesize of output 16 [2022-11-19 07:34:39,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:34:39,176 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-19 07:34:39,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 07:34:39,200 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 22 treesize of output 16 [2022-11-19 07:34:39,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:34:39,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:34:39,472 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-19 07:34:39,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 07:34:39,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-11-19 07:34:39,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:34:39,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:39,733 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:34:39,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 42 [2022-11-19 07:34:40,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-19 07:34:40,687 INFO L321 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-11-19 07:34:40,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 32 [2022-11-19 07:34:40,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:34:40,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:34:40,970 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:34:40,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777540534] [2022-11-19 07:34:40,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777540534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:34:40,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:34:40,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-19 07:34:40,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993691287] [2022-11-19 07:34:40,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:34:40,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 07:34:40,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:34:40,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 07:34:40,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2022-11-19 07:34:40,971 INFO L87 Difference]: Start difference. First operand 333 states and 411 transitions. Second operand has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:34:42,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:34:42,520 INFO L93 Difference]: Finished difference Result 380 states and 459 transitions. [2022-11-19 07:34:42,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-19 07:34:42,521 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2022-11-19 07:34:42,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:34:42,522 INFO L225 Difference]: With dead ends: 380 [2022-11-19 07:34:42,522 INFO L226 Difference]: Without dead ends: 380 [2022-11-19 07:34:42,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=128, Invalid=994, Unknown=0, NotChecked=0, Total=1122 [2022-11-19 07:34:42,523 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 192 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 1929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1444 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:34:42,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1632 Invalid, 1929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 462 Invalid, 0 Unknown, 1444 Unchecked, 0.9s Time] [2022-11-19 07:34:42,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-11-19 07:34:42,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 333. [2022-11-19 07:34:42,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 246 states have (on average 1.532520325203252) internal successors, (377), 307 states have internal predecessors, (377), 14 states have call successors, (14), 12 states have call predecessors, (14), 14 states have return successors, (19), 13 states have call predecessors, (19), 14 states have call successors, (19) [2022-11-19 07:34:42,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 410 transitions. [2022-11-19 07:34:42,532 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 410 transitions. Word has length 47 [2022-11-19 07:34:42,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:34:42,533 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 410 transitions. [2022-11-19 07:34:42,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:34:42,533 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 410 transitions. [2022-11-19 07:34:42,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-19 07:34:42,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:34:42,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:34:42,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-19 07:34:42,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:34:42,749 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:34:42,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:34:42,749 INFO L85 PathProgramCache]: Analyzing trace with hash -180994492, now seen corresponding path program 1 times [2022-11-19 07:34:42,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:34:42,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289534291] [2022-11-19 07:34:42,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:34:42,750 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 [2022-11-19 07:34:42,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:34:42,752 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:34:42,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-19 07:34:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:34:43,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 99 conjunts are in the unsatisfiable core [2022-11-19 07:34:43,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:34:43,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:34:43,430 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 [2022-11-19 07:34:43,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:34:43,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:34:43,912 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-19 07:34:43,912 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 26 [2022-11-19 07:34:43,982 INFO L321 Elim1Store]: treesize reduction 70, result has 30.7 percent of original size [2022-11-19 07:34:43,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 51 [2022-11-19 07:34:44,137 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 9 treesize of output 3 [2022-11-19 07:34:44,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:44,153 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-19 07:34:44,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-19 07:34:44,429 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-19 07:34:44,430 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 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-19 07:34:44,509 INFO L321 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-11-19 07:34:44,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 35 [2022-11-19 07:34:44,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-19 07:34:44,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2022-11-19 07:34:45,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-19 07:34:45,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:45,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:45,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:45,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:45,709 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:34:45,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 67 [2022-11-19 07:34:45,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:45,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:45,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:45,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:45,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:45,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 57 [2022-11-19 07:34:46,459 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-19 07:34:46,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 44 [2022-11-19 07:34:46,482 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 20 treesize of output 14 [2022-11-19 07:34:46,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-19 07:34:46,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:46,575 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:34:46,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-19 07:34:46,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-19 07:34:46,828 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-19 07:34:46,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 44 [2022-11-19 07:34:46,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2022-11-19 07:34:46,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:46,925 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:34:46,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-19 07:34:47,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-19 07:34:47,262 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-19 07:34:47,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 30 [2022-11-19 07:34:47,321 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-19 07:34:47,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 44 [2022-11-19 07:34:47,329 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 20 treesize of output 14 [2022-11-19 07:34:47,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:47,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:47,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-19 07:34:47,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-19 07:34:47,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:34:47,679 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:34:47,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 40 [2022-11-19 07:34:48,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2022-11-19 07:34:48,816 INFO L321 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-11-19 07:34:48,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 37 [2022-11-19 07:34:48,840 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-19 07:34:48,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-19 07:34:49,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:34:49,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:34:49,058 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:34:49,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [289534291] [2022-11-19 07:34:49,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [289534291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:34:49,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:34:49,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-19 07:34:49,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286693575] [2022-11-19 07:34:49,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:34:49,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-19 07:34:49,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:34:49,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-19 07:34:49,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=737, Unknown=0, NotChecked=0, Total=812 [2022-11-19 07:34:49,060 INFO L87 Difference]: Start difference. First operand 333 states and 410 transitions. Second operand has 29 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 24 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:34:52,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:34:52,021 INFO L93 Difference]: Finished difference Result 407 states and 494 transitions. [2022-11-19 07:34:52,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-19 07:34:52,022 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 24 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2022-11-19 07:34:52,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:34:52,023 INFO L225 Difference]: With dead ends: 407 [2022-11-19 07:34:52,024 INFO L226 Difference]: Without dead ends: 407 [2022-11-19 07:34:52,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=109, Invalid=1013, Unknown=0, NotChecked=0, Total=1122 [2022-11-19 07:34:52,025 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 73 mSDsluCounter, 2267 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 818 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:34:52,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2456 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 771 Invalid, 0 Unknown, 818 Unchecked, 2.0s Time] [2022-11-19 07:34:52,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-11-19 07:34:52,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 355. [2022-11-19 07:34:52,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 268 states have (on average 1.5037313432835822) internal successors, (403), 329 states have internal predecessors, (403), 14 states have call successors, (14), 12 states have call predecessors, (14), 14 states have return successors, (19), 13 states have call predecessors, (19), 14 states have call successors, (19) [2022-11-19 07:34:52,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 436 transitions. [2022-11-19 07:34:52,034 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 436 transitions. Word has length 47 [2022-11-19 07:34:52,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:34:52,035 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 436 transitions. [2022-11-19 07:34:52,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 24 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:34:52,035 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 436 transitions. [2022-11-19 07:34:52,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-19 07:34:52,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:34:52,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:34:52,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-19 07:34:52,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:34:52,251 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-19 07:34:52,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:34:52,252 INFO L85 PathProgramCache]: Analyzing trace with hash -603696318, now seen corresponding path program 1 times [2022-11-19 07:34:52,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:34:52,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436151034] [2022-11-19 07:34:52,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:34:52,252 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 [2022-11-19 07:34:52,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:34:52,253 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:34:52,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-19 07:34:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:34:52,711 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:34:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:34:53,092 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-19 07:34:53,092 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:34:53,093 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 76 remaining) [2022-11-19 07:34:53,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 76 remaining) [2022-11-19 07:34:53,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 76 remaining) [2022-11-19 07:34:53,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 76 remaining) [2022-11-19 07:34:53,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 76 remaining) [2022-11-19 07:34:53,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr4ASSERT_VIOLATIONMEMORY_FREE (70 of 76 remaining) [2022-11-19 07:34:53,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr5ASSERT_VIOLATIONMEMORY_FREE (69 of 76 remaining) [2022-11-19 07:34:53,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr6ASSERT_VIOLATIONMEMORY_FREE (68 of 76 remaining) [2022-11-19 07:34:53,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 76 remaining) [2022-11-19 07:34:53,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 76 remaining) [2022-11-19 07:34:53,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 76 remaining) [2022-11-19 07:34:53,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 76 remaining) [2022-11-19 07:34:53,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 76 remaining) [2022-11-19 07:34:53,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 76 remaining) [2022-11-19 07:34:53,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 76 remaining) [2022-11-19 07:34:53,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 76 remaining) [2022-11-19 07:34:53,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 76 remaining) [2022-11-19 07:34:53,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 76 remaining) [2022-11-19 07:34:53,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 76 remaining) [2022-11-19 07:34:53,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 76 remaining) [2022-11-19 07:34:53,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 76 remaining) [2022-11-19 07:34:53,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 76 remaining) [2022-11-19 07:34:53,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 76 remaining) [2022-11-19 07:34:53,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 76 remaining) [2022-11-19 07:34:53,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 76 remaining) [2022-11-19 07:34:53,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 76 remaining) [2022-11-19 07:34:53,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 76 remaining) [2022-11-19 07:34:53,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 76 remaining) [2022-11-19 07:34:53,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 76 remaining) [2022-11-19 07:34:53,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 76 remaining) [2022-11-19 07:34:53,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 76 remaining) [2022-11-19 07:34:53,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 76 remaining) [2022-11-19 07:34:53,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 76 remaining) [2022-11-19 07:34:53,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 76 remaining) [2022-11-19 07:34:53,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 76 remaining) [2022-11-19 07:34:53,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 76 remaining) [2022-11-19 07:34:53,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 76 remaining) [2022-11-19 07:34:53,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 76 remaining) [2022-11-19 07:34:53,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 76 remaining) [2022-11-19 07:34:53,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 76 remaining) [2022-11-19 07:34:53,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 76 remaining) [2022-11-19 07:34:53,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 76 remaining) [2022-11-19 07:34:53,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 76 remaining) [2022-11-19 07:34:53,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 76 remaining) [2022-11-19 07:34:53,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 76 remaining) [2022-11-19 07:34:53,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 76 remaining) [2022-11-19 07:34:53,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 76 remaining) [2022-11-19 07:34:53,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 76 remaining) [2022-11-19 07:34:53,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 76 remaining) [2022-11-19 07:34:53,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 76 remaining) [2022-11-19 07:34:53,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 76 remaining) [2022-11-19 07:34:53,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 76 remaining) [2022-11-19 07:34:53,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 76 remaining) [2022-11-19 07:34:53,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 76 remaining) [2022-11-19 07:34:53,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 76 remaining) [2022-11-19 07:34:53,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 76 remaining) [2022-11-19 07:34:53,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 76 remaining) [2022-11-19 07:34:53,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE (18 of 76 remaining) [2022-11-19 07:34:53,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE (17 of 76 remaining) [2022-11-19 07:34:53,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE (16 of 76 remaining) [2022-11-19 07:34:53,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 76 remaining) [2022-11-19 07:34:53,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 76 remaining) [2022-11-19 07:34:53,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE (13 of 76 remaining) [2022-11-19 07:34:53,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE (12 of 76 remaining) [2022-11-19 07:34:53,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE (11 of 76 remaining) [2022-11-19 07:34:53,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE (10 of 76 remaining) [2022-11-19 07:34:53,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE (9 of 76 remaining) [2022-11-19 07:34:53,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE (8 of 76 remaining) [2022-11-19 07:34:53,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 76 remaining) [2022-11-19 07:34:53,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 76 remaining) [2022-11-19 07:34:53,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 76 remaining) [2022-11-19 07:34:53,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 76 remaining) [2022-11-19 07:34:53,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE (3 of 76 remaining) [2022-11-19 07:34:53,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE (2 of 76 remaining) [2022-11-19 07:34:53,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_FREE (1 of 76 remaining) [2022-11-19 07:34:53,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK (0 of 76 remaining) [2022-11-19 07:34:53,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-19 07:34:53,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:34:53,328 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:34:53,333 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:34:53,342 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-19 07:34:53,349 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-19 07:34:53,349 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-19 07:34:53,349 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-19 07:34:53,350 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-19 07:34:53,352 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-19 07:34:53,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:34:53 BoogieIcfgContainer [2022-11-19 07:34:53,416 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:34:53,419 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:34:53,419 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:34:53,419 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:34:53,420 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:20" (3/4) ... [2022-11-19 07:34:53,421 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-19 07:34:53,425 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-19 07:34:53,428 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-19 07:34:53,429 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-19 07:34:53,430 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-19 07:34:53,433 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-19 07:34:53,433 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-19 07:34:53,486 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:34:53,486 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:34:53,488 INFO L158 Benchmark]: Toolchain (without parser) took 95306.75ms. Allocated memory was 69.2MB in the beginning and 125.8MB in the end (delta: 56.6MB). Free memory was 47.1MB in the beginning and 75.6MB in the end (delta: -28.4MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. [2022-11-19 07:34:53,490 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 69.2MB. Free memory was 49.6MB in the beginning and 49.6MB in the end (delta: 28.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:34:53,491 INFO L158 Benchmark]: CACSL2BoogieTranslator took 845.63ms. Allocated memory is still 69.2MB. Free memory was 46.9MB in the beginning and 31.3MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 07:34:53,492 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.91ms. Allocated memory is still 69.2MB. Free memory was 31.3MB in the beginning and 28.1MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:34:53,492 INFO L158 Benchmark]: Boogie Preprocessor took 53.36ms. Allocated memory is still 69.2MB. Free memory was 28.1MB in the beginning and 50.8MB in the end (delta: -22.7MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2022-11-19 07:34:53,493 INFO L158 Benchmark]: RCFGBuilder took 1210.92ms. Allocated memory was 69.2MB in the beginning and 86.0MB in the end (delta: 16.8MB). Free memory was 50.8MB in the beginning and 48.2MB in the end (delta: 2.6MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. [2022-11-19 07:34:53,493 INFO L158 Benchmark]: TraceAbstraction took 93058.24ms. Allocated memory was 86.0MB in the beginning and 125.8MB in the end (delta: 39.8MB). Free memory was 47.3MB in the beginning and 80.8MB in the end (delta: -33.5MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2022-11-19 07:34:53,493 INFO L158 Benchmark]: Witness Printer took 68.05ms. Allocated memory is still 125.8MB. Free memory was 80.8MB in the beginning and 75.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:34:53,494 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 69.2MB. Free memory was 49.6MB in the beginning and 49.6MB in the end (delta: 28.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 845.63ms. Allocated memory is still 69.2MB. Free memory was 46.9MB in the beginning and 31.3MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.91ms. Allocated memory is still 69.2MB. Free memory was 31.3MB in the beginning and 28.1MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.36ms. Allocated memory is still 69.2MB. Free memory was 28.1MB in the beginning and 50.8MB in the end (delta: -22.7MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1210.92ms. Allocated memory was 69.2MB in the beginning and 86.0MB in the end (delta: 16.8MB). Free memory was 50.8MB in the beginning and 48.2MB in the end (delta: 2.6MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. * TraceAbstraction took 93058.24ms. Allocated memory was 86.0MB in the beginning and 125.8MB in the end (delta: 39.8MB). Free memory was 47.3MB in the beginning and 80.8MB in the end (delta: -33.5MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Witness Printer took 68.05ms. Allocated memory is still 125.8MB. Free memory was 80.8MB in the beginning and 75.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L855] struct hid_device dev; [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [dev={1:0}, ldv_global_msg_list={2:0}] [L863] CALL entry_point() [L857] CALL probe_23(&dev) [L838] int ret = - -3; VAL [dev={1:0}, dev={1:0}, dev={1:0}, ldv_global_msg_list={2:0}, ret=3] [L839] CALL, EXPR ldv_malloc(sizeof(struct hid_report_enum)) VAL [\old(size)=1036, dev={1:0}, ldv_global_msg_list={2:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L839] RET, EXPR ldv_malloc(sizeof(struct hid_report_enum)) VAL [dev={1:0}, dev={1:0}, dev={1:0}, ldv_global_msg_list={2:0}, ldv_malloc(sizeof(struct hid_report_enum))={3:0}, ret=3] [L839] struct hid_report_enum *p = (struct hid_report_enum *)ldv_malloc(sizeof(struct hid_report_enum)); [L840] COND FALSE !(p==0) VAL [dev={1:0}, dev={1:0}, dev={1:0}, ldv_global_msg_list={2:0}, p={3:0}, ret=3] [L842] CALL LDV_INIT_LIST_HEAD(&p->report_list) VAL [dev={1:0}, ldv_global_msg_list={2:0}, list={3:4}] [L540] list->next = list VAL [dev={1:0}, ldv_global_msg_list={2:0}, list={3:4}, list={3:4}] [L541] list->prev = list VAL [dev={1:0}, ldv_global_msg_list={2:0}, list={3:4}, list={3:4}] [L842] RET LDV_INIT_LIST_HEAD(&p->report_list) VAL [dev={1:0}, dev={1:0}, dev={1:0}, ldv_global_msg_list={2:0}, p={3:0}, ret=3] [L843] dev->report_enum = p VAL [dev={1:0}, dev={1:0}, dev={1:0}, ldv_global_msg_list={2:0}, p={3:0}, ret=3] [L844] CALL hid_open_report(dev) [L812] struct hid_parser *parser; [L813] struct hid_item item; VAL [dev={1:0}, device={1:0}, device={1:0}, item={17:0}, ldv_global_msg_list={2:0}] [L814] CALL, EXPR ldv_zalloc(sizeof(struct hid_parser)) VAL [dev={1:0}, ldv_global_msg_list={2:0}] [L533] EXPR, FCALL calloc(size, 1) [L533] return calloc(size, 1); VAL [\old(size)=8, \result={7:0}, calloc(size, 1)={7:0}, dev={1:0}, ldv_global_msg_list={2:0}, size=8] [L814] RET, EXPR ldv_zalloc(sizeof(struct hid_parser)) VAL [dev={1:0}, device={1:0}, device={1:0}, item={17:0}, ldv_global_msg_list={2:0}, ldv_zalloc(sizeof(struct hid_parser))={7:0}] [L814] parser = ldv_zalloc(sizeof(struct hid_parser)) [L815] COND FALSE !(!parser) VAL [dev={1:0}, device={1:0}, device={1:0}, item={17:0}, ldv_global_msg_list={2:0}, parser={7:0}] [L818] parser->device = device VAL [dev={1:0}, device={1:0}, device={1:0}, item={17:0}, ldv_global_msg_list={2:0}, parser={7:0}] [L819] CALL, EXPR ldv_positive() [L519] int r = __VERIFIER_nondet_int(); [L520] COND TRUE r>0 [L520] return r; VAL [\result=1610612738, dev={1:0}, ldv_global_msg_list={2:0}, r=1610612738] [L819] RET, EXPR ldv_positive() [L819] parser->report_id = ldv_positive() VAL [dev={1:0}, device={1:0}, device={1:0}, item={17:0}, ldv_global_msg_list={2:0}, ldv_positive()=1610612738, parser={7:0}] [L820] CALL, EXPR fetch_item(&item) [L778] COND FALSE !(__VERIFIER_nondet_int()) [L781] item->type = 0 VAL [dev={1:0}, item={17:0}, item={17:0}, ldv_global_msg_list={2:0}] [L782] item->a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, dev={1:0}, item={17:0}, item={17:0}, ldv_global_msg_list={2:0}] [L783] item->b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, dev={1:0}, item={17:0}, item={17:0}, ldv_global_msg_list={2:0}] [L784] item->c = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, dev={1:0}, item={17:0}, item={17:0}, ldv_global_msg_list={2:0}] [L785] return 0; VAL [\result=0, dev={1:0}, item={17:0}, item={17:0}, ldv_global_msg_list={2:0}] [L820] RET, EXPR fetch_item(&item) [L820] COND TRUE fetch_item(&item)!=-1 [L821] CALL hid_parser_main(parser, &item) [L800] EXPR parser->device VAL [dev={1:0}, item={17:0}, item={17:0}, ldv_global_msg_list={2:0}, parser={7:0}, parser={7:0}, parser->device={1:0}] [L800] EXPR parser->report_id VAL [dev={1:0}, item={17:0}, item={17:0}, ldv_global_msg_list={2:0}, parser={7:0}, parser={7:0}, parser->device={1:0}, parser->report_id=1610612738] [L800] CALL hid_register_report(parser->device, parser->report_id) [L788] EXPR device->report_enum VAL [\old(id)=1610612738, dev={1:0}, device={1:0}, device={1:0}, device->report_enum={3:0}, id=1610612738, ldv_global_msg_list={2:0}] [L788] struct hid_report_enum *report_enum = device->report_enum; [L789] struct hid_report *report; VAL [\old(id)=1610612738, dev={1:0}, device={1:0}, device={1:0}, id=1610612738, ldv_global_msg_list={2:0}, report_enum={3:0}] [L790] report_enum->report_id_hash[id] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 826]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 826]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 826]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 835]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 835]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 835]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 862]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 198 locations, 76 error locations. Started 1 CEGAR loops. OverallTime: 92.9s, OverallIterations: 30, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 45.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3920 SdHoareTripleChecker+Valid, 30.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3872 mSDsluCounter, 27061 SdHoareTripleChecker+Invalid, 26.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 6795 IncrementalHoareTripleChecker+Unchecked, 22387 mSDsCounter, 384 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13199 IncrementalHoareTripleChecker+Invalid, 20378 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 384 mSolverCounterUnsat, 4674 mSDtfsCounter, 13199 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1037 GetRequests, 630 SyntacticMatches, 14 SemanticMatches, 393 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1931 ImplicationChecksByTransitivity, 31.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=355occurred in iteration=29, InterpolantAutomatonStates: 363, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 29 MinimizatonAttempts, 935 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 3.9s SatisfiabilityAnalysisTime, 33.3s InterpolantComputationTime, 985 NumberOfCodeBlocks, 985 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 909 ConstructedInterpolants, 200 QuantifiedInterpolants, 16624 SizeOfPredicates, 311 NumberOfNonLiveVariables, 5349 ConjunctsInSsa, 755 ConjunctsInUnsatCore, 29 InterpolantComputations, 29 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-19 07:34:53,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bb5d7e0-c430-43b1-b43c-430fe735244e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)