./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e --- 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 06:33:31,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:33:31,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:33:31,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:33:31,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:33:31,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:33:31,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:33:31,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:33:31,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:33:31,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:33:31,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:33:31,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:33:31,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:33:31,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:33:31,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:33:31,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:33:31,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:33:31,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:33:31,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:33:31,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:33:31,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:33:31,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:33:31,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:33:31,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:33:31,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:33:31,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:33:31,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:33:31,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:33:31,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:33:31,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:33:31,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:33:31,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:33:31,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:33:31,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:33:31,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:33:31,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:33:31,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:33:31,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:33:31,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:33:31,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:33:31,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:33:31,171 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-19 06:33:31,217 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:33:31,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:33:31,219 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:33:31,219 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:33:31,220 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:33:31,220 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:33:31,220 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:33:31,221 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:33:31,221 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:33:31,221 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:33:31,222 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:33:31,223 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:33:31,223 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:33:31,223 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:33:31,223 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:33:31,224 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:33:31,224 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:33:31,224 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:33:31,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 06:33:31,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 06:33:31,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:33:31,227 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:33:31,227 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:33:31,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:33:31,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:33:31,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:33:31,228 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 06:33:31,229 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 06:33:31,229 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 06:33:31,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:33:31,230 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:33:31,230 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:33:31,230 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:33:31,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:33:31,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:33:31,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:33:31,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:33:31,231 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:33:31,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:33:31,232 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:33:31,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:33:31,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:33:31,232 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_8811f3ee-088c-410b-b3eb-fef06a6c1659/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e [2022-11-19 06:33:31,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:33:31,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:33:31,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:33:31,576 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:33:31,577 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:33:31,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2022-11-19 06:33:31,670 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/data/fba4f63c1/1454616e90e5478d932cc0563c4e4245/FLAG82b54b25d [2022-11-19 06:33:32,285 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:33:32,286 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2022-11-19 06:33:32,297 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/data/fba4f63c1/1454616e90e5478d932cc0563c4e4245/FLAG82b54b25d [2022-11-19 06:33:32,606 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/data/fba4f63c1/1454616e90e5478d932cc0563c4e4245 [2022-11-19 06:33:32,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:33:32,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:33:32,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:33:32,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:33:32,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:33:32,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:33:32" (1/1) ... [2022-11-19 06:33:32,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@560ff8e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:32, skipping insertion in model container [2022-11-19 06:33:32,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:33:32" (1/1) ... [2022-11-19 06:33:32,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:33:32,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:33:32,946 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2022-11-19 06:33:32,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:33:32,993 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 06:33:32,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1e22a055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:32, skipping insertion in model container [2022-11-19 06:33:32,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:33:32,994 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-19 06:33:32,997 INFO L158 Benchmark]: Toolchain (without parser) took 376.30ms. Allocated memory is still 134.2MB. Free memory was 102.0MB in the beginning and 109.4MB in the end (delta: -7.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 06:33:32,999 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 96.5MB. Free memory was 52.7MB in the beginning and 52.6MB in the end (delta: 45.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:33:33,002 INFO L158 Benchmark]: CACSL2BoogieTranslator took 370.57ms. Allocated memory is still 134.2MB. Free memory was 101.7MB in the beginning and 109.6MB in the end (delta: -7.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 06:33:33,004 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 96.5MB. Free memory was 52.7MB in the beginning and 52.6MB in the end (delta: 45.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 370.57ms. Allocated memory is still 134.2MB. Free memory was 101.7MB in the beginning and 109.6MB in the end (delta: -7.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 96]: 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_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e --- 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 06:33:35,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:33:35,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:33:35,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:33:35,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:33:35,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:33:35,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:33:35,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:33:35,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:33:35,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:33:35,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:33:35,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:33:35,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:33:35,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:33:35,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:33:35,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:33:35,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:33:35,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:33:35,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:33:35,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:33:35,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:33:35,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:33:35,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:33:35,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:33:35,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:33:35,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:33:35,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:33:35,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:33:35,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:33:35,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:33:35,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:33:35,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:33:35,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:33:35,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:33:35,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:33:35,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:33:35,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:33:35,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:33:35,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:33:35,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:33:35,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:33:35,547 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-19 06:33:35,585 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:33:35,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:33:35,587 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:33:35,587 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:33:35,588 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:33:35,589 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:33:35,589 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:33:35,589 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:33:35,590 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:33:35,590 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:33:35,591 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:33:35,591 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:33:35,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 06:33:35,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 06:33:35,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:33:35,593 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:33:35,594 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:33:35,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:33:35,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:33:35,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:33:35,595 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 06:33:35,595 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 06:33:35,595 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 06:33:35,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:33:35,596 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:33:35,596 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 06:33:35,596 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 06:33:35,597 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:33:35,597 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:33:35,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:33:35,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 06:33:35,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:33:35,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:33:35,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:33:35,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:33:35,600 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 06:33:35,600 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 06:33:35,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:33:35,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 06:33:35,601 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_8811f3ee-088c-410b-b3eb-fef06a6c1659/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e [2022-11-19 06:33:36,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:33:36,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:33:36,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:33:36,033 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:33:36,034 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:33:36,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2022-11-19 06:33:36,098 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/data/504ab409a/16fecf177f3d45f2a4bb565ad38b311f/FLAGefe8b592b [2022-11-19 06:33:36,607 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:33:36,608 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2022-11-19 06:33:36,617 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/data/504ab409a/16fecf177f3d45f2a4bb565ad38b311f/FLAGefe8b592b [2022-11-19 06:33:36,919 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/data/504ab409a/16fecf177f3d45f2a4bb565ad38b311f [2022-11-19 06:33:36,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:33:36,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:33:36,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:33:36,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:33:36,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:33:36,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:33:36" (1/1) ... [2022-11-19 06:33:36,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c9d88e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:36, skipping insertion in model container [2022-11-19 06:33:36,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:33:36" (1/1) ... [2022-11-19 06:33:36,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:33:36,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:33:37,173 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2022-11-19 06:33:37,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:33:37,246 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 06:33:37,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:33:37,293 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2022-11-19 06:33:37,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:33:37,326 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:33:37,364 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2022-11-19 06:33:37,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:33:37,398 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:33:37,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37 WrapperNode [2022-11-19 06:33:37,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:33:37,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:33:37,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:33:37,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:33:37,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37" (1/1) ... [2022-11-19 06:33:37,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37" (1/1) ... [2022-11-19 06:33:37,477 INFO L138 Inliner]: procedures = 28, calls = 40, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 140 [2022-11-19 06:33:37,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:33:37,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:33:37,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:33:37,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:33:37,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37" (1/1) ... [2022-11-19 06:33:37,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37" (1/1) ... [2022-11-19 06:33:37,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37" (1/1) ... [2022-11-19 06:33:37,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37" (1/1) ... [2022-11-19 06:33:37,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37" (1/1) ... [2022-11-19 06:33:37,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37" (1/1) ... [2022-11-19 06:33:37,551 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37" (1/1) ... [2022-11-19 06:33:37,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37" (1/1) ... [2022-11-19 06:33:37,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:33:37,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:33:37,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:33:37,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:33:37,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37" (1/1) ... [2022-11-19 06:33:37,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:33:37,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:33:37,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:33:37,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:33:37,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:33:37,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 06:33:37,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:33:37,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 06:33:37,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-19 06:33:37,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-19 06:33:37,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-19 06:33:37,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-19 06:33:37,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-19 06:33:37,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-19 06:33:37,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:33:37,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:33:37,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:33:37,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:33:37,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 06:33:37,673 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-19 06:33:37,833 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:33:37,835 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:33:38,365 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:33:38,622 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:33:38,623 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 06:33:38,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:33:38 BoogieIcfgContainer [2022-11-19 06:33:38,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:33:38,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:33:38,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:33:38,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:33:38,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:33:36" (1/3) ... [2022-11-19 06:33:38,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e8e3ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:33:38, skipping insertion in model container [2022-11-19 06:33:38,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37" (2/3) ... [2022-11-19 06:33:38,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e8e3ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:33:38, skipping insertion in model container [2022-11-19 06:33:38,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:33:38" (3/3) ... [2022-11-19 06:33:38,658 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2022-11-19 06:33:38,690 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:33:38,691 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-19 06:33:38,691 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 06:33:38,842 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-19 06:33:38,881 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 06:33:38,897 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 135 transitions, 286 flow [2022-11-19 06:33:38,900 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 135 transitions, 286 flow [2022-11-19 06:33:38,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 135 transitions, 286 flow [2022-11-19 06:33:38,967 INFO L130 PetriNetUnfolder]: 9/133 cut-off events. [2022-11-19 06:33:38,968 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-19 06:33:38,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 133 events. 9/133 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 131 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-11-19 06:33:38,977 INFO L119 LiptonReduction]: Number of co-enabled transitions 936 [2022-11-19 06:33:59,330 INFO L134 LiptonReduction]: Checked pairs total: 1648 [2022-11-19 06:33:59,331 INFO L136 LiptonReduction]: Total number of compositions: 144 [2022-11-19 06:33:59,341 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 37 transitions, 90 flow [2022-11-19 06:33:59,378 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 202 states, 158 states have (on average 3.1835443037974684) internal successors, (503), 201 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:33:59,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:33:59,422 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;@5659d8e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:33:59,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-19 06:33:59,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 158 states have (on average 3.1835443037974684) internal successors, (503), 201 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:33:59,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 06:33:59,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:33:59,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 06:33:59,437 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:33:59,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:33:59,448 INFO L85 PathProgramCache]: Analyzing trace with hash 20436, now seen corresponding path program 1 times [2022-11-19 06:33:59,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:33:59,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814743154] [2022-11-19 06:33:59,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:33:59,466 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 06:33:59,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:33:59,474 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:33:59,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:33:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:33:59,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:33:59,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:33:59,828 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-19 06:33:59,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-19 06:33:59,869 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 06:33:59,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:33:59,871 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:33:59,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814743154] [2022-11-19 06:33:59,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814743154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:33:59,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:33:59,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:33:59,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591012697] [2022-11-19 06:33:59,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:33:59,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:33:59,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:33:59,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:33:59,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:33:59,948 INFO L87 Difference]: Start difference. First operand has 202 states, 158 states have (on average 3.1835443037974684) internal successors, (503), 201 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:00,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:00,200 INFO L93 Difference]: Finished difference Result 200 states and 501 transitions. [2022-11-19 06:34:00,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:34:00,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-19 06:34:00,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:00,222 INFO L225 Difference]: With dead ends: 200 [2022-11-19 06:34:00,223 INFO L226 Difference]: Without dead ends: 200 [2022-11-19 06:34:00,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:00,232 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:00,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 2 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:34:00,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-19 06:34:00,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2022-11-19 06:34:00,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 158 states have (on average 3.170886075949367) internal successors, (501), 199 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:00,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 501 transitions. [2022-11-19 06:34:00,335 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 501 transitions. Word has length 2 [2022-11-19 06:34:00,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:00,336 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 501 transitions. [2022-11-19 06:34:00,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:00,337 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 501 transitions. [2022-11-19 06:34:00,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 06:34:00,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:00,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 06:34:00,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:00,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:00,555 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:34:00,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:00,556 INFO L85 PathProgramCache]: Analyzing trace with hash 20564, now seen corresponding path program 1 times [2022-11-19 06:34:00,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:00,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157990979] [2022-11-19 06:34:00,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:00,563 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 06:34:00,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:00,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:00,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:00,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 06:34:00,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:00,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:34:00,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:34:00,742 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 06:34:00,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-11-19 06:34:00,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-19 06:34:00,829 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 06:34:00,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:34:00,830 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:00,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157990979] [2022-11-19 06:34:00,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157990979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:00,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:00,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:34:00,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121393909] [2022-11-19 06:34:00,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:00,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:34:00,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:00,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:34:00,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:00,836 INFO L87 Difference]: Start difference. First operand 200 states and 501 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:00,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:00,998 INFO L93 Difference]: Finished difference Result 201 states and 505 transitions. [2022-11-19 06:34:00,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:34:00,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-19 06:34:00,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:01,001 INFO L225 Difference]: With dead ends: 201 [2022-11-19 06:34:01,001 INFO L226 Difference]: Without dead ends: 201 [2022-11-19 06:34:01,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:01,003 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:01,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 29 Unchecked, 0.2s Time] [2022-11-19 06:34:01,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-19 06:34:01,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2022-11-19 06:34:01,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 159 states have (on average 3.1761006289308176) internal successors, (505), 200 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:01,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 505 transitions. [2022-11-19 06:34:01,018 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 505 transitions. Word has length 2 [2022-11-19 06:34:01,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:01,019 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 505 transitions. [2022-11-19 06:34:01,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:01,019 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 505 transitions. [2022-11-19 06:34:01,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 06:34:01,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:01,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 06:34:01,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:01,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:01,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:34:01,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:01,234 INFO L85 PathProgramCache]: Analyzing trace with hash 20565, now seen corresponding path program 1 times [2022-11-19 06:34:01,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:01,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760795322] [2022-11-19 06:34:01,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:01,236 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:34:01,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:01,238 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:01,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:01,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 06:34:01,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:01,403 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-19 06:34:01,403 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 3 case distinctions, treesize of input 22 treesize of output 29 [2022-11-19 06:34:01,441 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 06:34:01,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:34:01,441 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:01,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760795322] [2022-11-19 06:34:01,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760795322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:01,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:01,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:34:01,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184935691] [2022-11-19 06:34:01,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:01,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:34:01,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:01,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:34:01,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:01,444 INFO L87 Difference]: Start difference. First operand 201 states and 505 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:01,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:01,570 INFO L93 Difference]: Finished difference Result 201 states and 504 transitions. [2022-11-19 06:34:01,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:34:01,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-19 06:34:01,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:01,572 INFO L225 Difference]: With dead ends: 201 [2022-11-19 06:34:01,572 INFO L226 Difference]: Without dead ends: 201 [2022-11-19 06:34:01,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:01,573 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:01,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 29 Unchecked, 0.1s Time] [2022-11-19 06:34:01,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-19 06:34:01,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2022-11-19 06:34:01,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 159 states have (on average 3.169811320754717) internal successors, (504), 200 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:01,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 504 transitions. [2022-11-19 06:34:01,587 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 504 transitions. Word has length 2 [2022-11-19 06:34:01,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:01,587 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 504 transitions. [2022-11-19 06:34:01,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:01,587 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 504 transitions. [2022-11-19 06:34:01,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 06:34:01,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:01,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 06:34:01,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:01,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:01,800 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:34:01,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:01,801 INFO L85 PathProgramCache]: Analyzing trace with hash 20437, now seen corresponding path program 1 times [2022-11-19 06:34:01,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:01,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206459167] [2022-11-19 06:34:01,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:01,801 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 06:34:01,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:01,803 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:01,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:01,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 06:34:01,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:01,981 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:34:01,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:34:02,015 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 06:34:02,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:34:02,016 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:02,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206459167] [2022-11-19 06:34:02,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206459167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:02,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:02,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:34:02,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243933522] [2022-11-19 06:34:02,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:02,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:34:02,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:02,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:34:02,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:02,018 INFO L87 Difference]: Start difference. First operand 201 states and 504 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:02,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:02,347 INFO L93 Difference]: Finished difference Result 396 states and 998 transitions. [2022-11-19 06:34:02,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:34:02,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-19 06:34:02,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:02,351 INFO L225 Difference]: With dead ends: 396 [2022-11-19 06:34:02,351 INFO L226 Difference]: Without dead ends: 396 [2022-11-19 06:34:02,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:02,353 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 27 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:02,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 4 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 06:34:02,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-11-19 06:34:02,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 201. [2022-11-19 06:34:02,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 159 states have (on average 3.1635220125786163) internal successors, (503), 200 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:02,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 503 transitions. [2022-11-19 06:34:02,397 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 503 transitions. Word has length 2 [2022-11-19 06:34:02,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:02,397 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 503 transitions. [2022-11-19 06:34:02,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:02,398 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 503 transitions. [2022-11-19 06:34:02,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 06:34:02,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:02,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 06:34:02,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:02,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:02,615 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:34:02,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:02,616 INFO L85 PathProgramCache]: Analyzing trace with hash 637340, now seen corresponding path program 1 times [2022-11-19 06:34:02,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:02,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366980875] [2022-11-19 06:34:02,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:02,617 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 06:34:02,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:02,619 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:02,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:02,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-19 06:34:02,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:02,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:34:02,835 INFO L321 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-11-19 06:34:02,836 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 2 case distinctions, treesize of input 14 treesize of output 26 [2022-11-19 06:34:02,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-19 06:34:03,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:03,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:03,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:03,316 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:03,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366980875] [2022-11-19 06:34:03,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366980875] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:03,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [854154499] [2022-11-19 06:34:03,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:03,317 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:34:03,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:34:03,321 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:34:03,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-19 06:34:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:03,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 06:34:03,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:03,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:34:03,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:34:03,591 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 06:34:03,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-11-19 06:34:03,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-19 06:34:03,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:34:03,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:34:03,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [854154499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:03,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:34:03,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [2, 2] total 5 [2022-11-19 06:34:03,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940721633] [2022-11-19 06:34:03,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:03,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:34:03,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:03,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:34:03,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:34:03,712 INFO L87 Difference]: Start difference. First operand 201 states and 503 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:03,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:03,843 INFO L93 Difference]: Finished difference Result 200 states and 502 transitions. [2022-11-19 06:34:03,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:34:03,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-19 06:34:03,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:03,846 INFO L225 Difference]: With dead ends: 200 [2022-11-19 06:34:03,846 INFO L226 Difference]: Without dead ends: 200 [2022-11-19 06:34:03,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:34:03,848 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:03,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2022-11-19 06:34:03,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-19 06:34:03,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2022-11-19 06:34:03,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 159 states have (on average 3.157232704402516) internal successors, (502), 199 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:03,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 502 transitions. [2022-11-19 06:34:03,860 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 502 transitions. Word has length 3 [2022-11-19 06:34:03,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:03,860 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 502 transitions. [2022-11-19 06:34:03,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:03,861 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 502 transitions. [2022-11-19 06:34:03,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 06:34:03,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:03,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 06:34:03,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-19 06:34:04,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:04,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:04,267 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:34:04,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:04,267 INFO L85 PathProgramCache]: Analyzing trace with hash 637341, now seen corresponding path program 1 times [2022-11-19 06:34:04,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:04,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78275604] [2022-11-19 06:34:04,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:04,268 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 06:34:04,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:04,270 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:04,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:04,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 06:34:04,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:04,436 INFO L321 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2022-11-19 06:34:04,437 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 3 case distinctions, treesize of input 22 treesize of output 33 [2022-11-19 06:34:04,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:34:04,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:34:04,469 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:04,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78275604] [2022-11-19 06:34:04,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78275604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:04,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:04,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:34:04,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793468065] [2022-11-19 06:34:04,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:04,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:34:04,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:04,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:34:04,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:04,471 INFO L87 Difference]: Start difference. First operand 200 states and 502 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:04,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:04,631 INFO L93 Difference]: Finished difference Result 163 states and 393 transitions. [2022-11-19 06:34:04,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:34:04,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-19 06:34:04,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:04,634 INFO L225 Difference]: With dead ends: 163 [2022-11-19 06:34:04,634 INFO L226 Difference]: Without dead ends: 163 [2022-11-19 06:34:04,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:04,636 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:04,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:34:04,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-19 06:34:04,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-11-19 06:34:04,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 132 states have (on average 2.977272727272727) internal successors, (393), 162 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:04,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 393 transitions. [2022-11-19 06:34:04,645 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 393 transitions. Word has length 3 [2022-11-19 06:34:04,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:04,645 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 393 transitions. [2022-11-19 06:34:04,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:04,645 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 393 transitions. [2022-11-19 06:34:04,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 06:34:04,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:04,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 06:34:04,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:04,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:04,847 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:34:04,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:04,847 INFO L85 PathProgramCache]: Analyzing trace with hash 637213, now seen corresponding path program 1 times [2022-11-19 06:34:04,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:04,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140225680] [2022-11-19 06:34:04,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:04,848 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 06:34:04,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:04,849 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:04,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:04,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 06:34:04,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:05,048 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:34:05,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:34:05,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:05,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:05,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:05,457 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:05,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140225680] [2022-11-19 06:34:05,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140225680] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:05,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1012319096] [2022-11-19 06:34:05,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:05,458 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:34:05,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:34:05,466 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:34:05,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-19 06:34:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:05,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 06:34:05,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:05,730 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:34:05,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:34:05,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:05,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:05,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:05,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1012319096] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:05,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298862589] [2022-11-19 06:34:05,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:05,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:05,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:34:05,882 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:34:05,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 06:34:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:05,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 06:34:05,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:06,089 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:34:06,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:34:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:06,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:06,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:06,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298862589] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:06,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:34:06,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2, 2, 2, 2] total 6 [2022-11-19 06:34:06,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123453320] [2022-11-19 06:34:06,336 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:34:06,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 06:34:06,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:06,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 06:34:06,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:34:06,337 INFO L87 Difference]: Start difference. First operand 163 states and 393 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:07,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:07,834 INFO L93 Difference]: Finished difference Result 643 states and 1560 transitions. [2022-11-19 06:34:07,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:34:07,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-19 06:34:07,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:07,840 INFO L225 Difference]: With dead ends: 643 [2022-11-19 06:34:07,840 INFO L226 Difference]: Without dead ends: 643 [2022-11-19 06:34:07,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2022-11-19 06:34:07,842 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 181 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:07,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 12 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-19 06:34:07,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-11-19 06:34:07,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 166. [2022-11-19 06:34:07,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 135 states have (on average 2.9555555555555557) internal successors, (399), 165 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:07,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 399 transitions. [2022-11-19 06:34:07,855 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 399 transitions. Word has length 3 [2022-11-19 06:34:07,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:07,856 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 399 transitions. [2022-11-19 06:34:07,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:07,856 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 399 transitions. [2022-11-19 06:34:07,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 06:34:07,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:07,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 06:34:07,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 06:34:08,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:08,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-19 06:34:08,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 06:34:08,465 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:34:08,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:08,466 INFO L85 PathProgramCache]: Analyzing trace with hash 19776105, now seen corresponding path program 1 times [2022-11-19 06:34:08,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:08,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514717834] [2022-11-19 06:34:08,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:08,466 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 06:34:08,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:08,468 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:08,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:08,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 06:34:08,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:08,632 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-19 06:34:08,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2022-11-19 06:34:08,662 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 06:34:08,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:34:08,663 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:08,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514717834] [2022-11-19 06:34:08,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514717834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:08,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:08,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:34:08,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081535512] [2022-11-19 06:34:08,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:08,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:34:08,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:08,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:34:08,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:08,665 INFO L87 Difference]: Start difference. First operand 166 states and 399 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:08,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:08,828 INFO L93 Difference]: Finished difference Result 154 states and 375 transitions. [2022-11-19 06:34:08,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:34:08,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-19 06:34:08,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:08,830 INFO L225 Difference]: With dead ends: 154 [2022-11-19 06:34:08,830 INFO L226 Difference]: Without dead ends: 154 [2022-11-19 06:34:08,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:08,831 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:08,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:34:08,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-19 06:34:08,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2022-11-19 06:34:08,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 129 states have (on average 2.9069767441860463) internal successors, (375), 153 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:08,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 375 transitions. [2022-11-19 06:34:08,838 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 375 transitions. Word has length 4 [2022-11-19 06:34:08,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:08,839 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 375 transitions. [2022-11-19 06:34:08,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:08,839 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 375 transitions. [2022-11-19 06:34:08,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 06:34:08,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:08,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 06:34:08,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:09,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:09,052 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:34:09,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:09,053 INFO L85 PathProgramCache]: Analyzing trace with hash 19776106, now seen corresponding path program 1 times [2022-11-19 06:34:09,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:09,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961800144] [2022-11-19 06:34:09,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:09,053 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 06:34:09,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:09,055 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:09,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:09,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 06:34:09,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:09,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:34:09,202 INFO L321 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2022-11-19 06:34:09,203 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 1 case distinctions, treesize of input 12 treesize of output 23 [2022-11-19 06:34:09,219 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 39 treesize of output 37 [2022-11-19 06:34:09,252 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 06:34:09,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:34:09,253 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:09,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961800144] [2022-11-19 06:34:09,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961800144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:09,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:09,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:34:09,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781537518] [2022-11-19 06:34:09,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:09,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:34:09,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:09,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:34:09,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:09,255 INFO L87 Difference]: Start difference. First operand 154 states and 375 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:09,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:09,387 INFO L93 Difference]: Finished difference Result 142 states and 351 transitions. [2022-11-19 06:34:09,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:34:09,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-19 06:34:09,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:09,389 INFO L225 Difference]: With dead ends: 142 [2022-11-19 06:34:09,389 INFO L226 Difference]: Without dead ends: 142 [2022-11-19 06:34:09,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:09,390 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:09,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:34:09,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-19 06:34:09,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2022-11-19 06:34:09,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 123 states have (on average 2.8536585365853657) internal successors, (351), 141 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:09,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 351 transitions. [2022-11-19 06:34:09,397 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 351 transitions. Word has length 4 [2022-11-19 06:34:09,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:09,398 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 351 transitions. [2022-11-19 06:34:09,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:09,398 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 351 transitions. [2022-11-19 06:34:09,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:34:09,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:09,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:34:09,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:09,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:09,600 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:34:09,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:09,600 INFO L85 PathProgramCache]: Analyzing trace with hash 613055227, now seen corresponding path program 1 times [2022-11-19 06:34:09,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:09,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855605721] [2022-11-19 06:34:09,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:09,601 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 06:34:09,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:09,603 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:09,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:09,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 06:34:09,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:09,737 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-19 06:34:09,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-19 06:34:09,763 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 06:34:09,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:34:09,764 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:09,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855605721] [2022-11-19 06:34:09,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855605721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:09,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:09,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:34:09,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358230661] [2022-11-19 06:34:09,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:09,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:34:09,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:09,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:34:09,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:34:09,766 INFO L87 Difference]: Start difference. First operand 142 states and 351 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:09,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:09,913 INFO L93 Difference]: Finished difference Result 105 states and 255 transitions. [2022-11-19 06:34:09,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:34:09,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 06:34:09,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:09,915 INFO L225 Difference]: With dead ends: 105 [2022-11-19 06:34:09,915 INFO L226 Difference]: Without dead ends: 105 [2022-11-19 06:34:09,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 06:34:09,916 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:09,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 2 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:34:09,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-19 06:34:09,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-11-19 06:34:09,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 96 states have (on average 2.65625) internal successors, (255), 104 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:09,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 255 transitions. [2022-11-19 06:34:09,921 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 255 transitions. Word has length 5 [2022-11-19 06:34:09,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:09,921 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 255 transitions. [2022-11-19 06:34:09,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:09,921 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 255 transitions. [2022-11-19 06:34:09,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:34:09,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:09,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:34:09,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:10,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:10,123 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:34:10,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:10,124 INFO L85 PathProgramCache]: Analyzing trace with hash 613055228, now seen corresponding path program 1 times [2022-11-19 06:34:10,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:10,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114460692] [2022-11-19 06:34:10,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:10,124 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 06:34:10,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:10,125 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:10,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:10,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-19 06:34:10,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:10,271 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:34:10,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:34:10,389 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 06:34:10,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:34:10,390 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:10,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114460692] [2022-11-19 06:34:10,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114460692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:10,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:10,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:34:10,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782779521] [2022-11-19 06:34:10,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:10,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:34:10,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:10,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:34:10,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:34:10,392 INFO L87 Difference]: Start difference. First operand 105 states and 255 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:10,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:10,686 INFO L93 Difference]: Finished difference Result 168 states and 409 transitions. [2022-11-19 06:34:10,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:34:10,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 06:34:10,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:10,688 INFO L225 Difference]: With dead ends: 168 [2022-11-19 06:34:10,688 INFO L226 Difference]: Without dead ends: 168 [2022-11-19 06:34:10,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:34:10,689 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 69 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:10,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 4 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:34:10,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-19 06:34:10,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 122. [2022-11-19 06:34:10,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 113 states have (on average 2.7964601769911503) internal successors, (316), 121 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:10,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 316 transitions. [2022-11-19 06:34:10,697 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 316 transitions. Word has length 5 [2022-11-19 06:34:10,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:10,697 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 316 transitions. [2022-11-19 06:34:10,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:10,698 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 316 transitions. [2022-11-19 06:34:10,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:34:10,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:10,698 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-19 06:34:10,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:10,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:10,899 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:34:10,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:10,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1806983637, now seen corresponding path program 2 times [2022-11-19 06:34:10,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:10,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467505469] [2022-11-19 06:34:10,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:34:10,900 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 06:34:10,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:10,901 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:10,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:11,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:34:11,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:34:11,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 06:34:11,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:11,106 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:34:11,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:34:11,286 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:11,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:12,279 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:12,279 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:12,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467505469] [2022-11-19 06:34:12,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467505469] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:12,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [465651552] [2022-11-19 06:34:12,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:34:12,280 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:34:12,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:34:12,283 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:34:12,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-19 06:34:12,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:34:12,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:34:12,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 06:34:12,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:12,618 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:34:12,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:34:12,696 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:12,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:12,894 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:12,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [465651552] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:12,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595055279] [2022-11-19 06:34:12,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:34:12,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:12,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:34:12,897 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:34:12,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-19 06:34:13,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:34:13,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:34:13,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 06:34:13,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:13,125 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:34:13,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:34:13,212 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:13,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:13,438 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:13,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595055279] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:13,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:34:13,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 10 [2022-11-19 06:34:13,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761801831] [2022-11-19 06:34:13,439 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:34:13,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 06:34:13,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:13,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 06:34:13,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-19 06:34:13,440 INFO L87 Difference]: Start difference. First operand 122 states and 316 transitions. Second operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:17,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:17,962 INFO L93 Difference]: Finished difference Result 1163 states and 3064 transitions. [2022-11-19 06:34:17,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 06:34:17,964 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 06:34:17,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:17,975 INFO L225 Difference]: With dead ends: 1163 [2022-11-19 06:34:17,975 INFO L226 Difference]: Without dead ends: 1163 [2022-11-19 06:34:17,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-19 06:34:17,977 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 720 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:17,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 58 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-19 06:34:17,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2022-11-19 06:34:18,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 128. [2022-11-19 06:34:18,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 119 states have (on average 2.7563025210084033) internal successors, (328), 127 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:18,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 328 transitions. [2022-11-19 06:34:18,007 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 328 transitions. Word has length 6 [2022-11-19 06:34:18,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:18,008 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 328 transitions. [2022-11-19 06:34:18,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:18,009 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 328 transitions. [2022-11-19 06:34:18,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:34:18,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:18,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 06:34:18,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-19 06:34:18,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:18,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2022-11-19 06:34:18,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 06:34:18,619 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:34:18,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:18,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1824984601, now seen corresponding path program 1 times [2022-11-19 06:34:18,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:18,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778460109] [2022-11-19 06:34:18,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:18,620 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 06:34:18,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:18,621 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:18,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:18,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:34:18,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:18,783 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 06:34:18,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:34:18,784 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:18,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778460109] [2022-11-19 06:34:18,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778460109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:18,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:18,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:34:18,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514283016] [2022-11-19 06:34:18,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:18,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:34:18,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:18,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:34:18,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:34:18,786 INFO L87 Difference]: Start difference. First operand 128 states and 328 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:18,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:18,921 INFO L93 Difference]: Finished difference Result 98 states and 233 transitions. [2022-11-19 06:34:18,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:34:18,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 06:34:18,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:18,923 INFO L225 Difference]: With dead ends: 98 [2022-11-19 06:34:18,923 INFO L226 Difference]: Without dead ends: 98 [2022-11-19 06:34:18,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:34:18,924 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:18,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:34:18,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-19 06:34:18,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-19 06:34:18,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 93 states have (on average 2.5053763440860215) internal successors, (233), 97 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:18,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 233 transitions. [2022-11-19 06:34:18,929 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 233 transitions. Word has length 6 [2022-11-19 06:34:18,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:18,930 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 233 transitions. [2022-11-19 06:34:18,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:18,931 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 233 transitions. [2022-11-19 06:34:18,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 06:34:18,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:18,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:34:18,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:19,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:19,142 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:34:19,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:19,143 INFO L85 PathProgramCache]: Analyzing trace with hash 735574089, now seen corresponding path program 1 times [2022-11-19 06:34:19,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:19,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015104780] [2022-11-19 06:34:19,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:19,144 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 06:34:19,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:19,145 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:19,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:19,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-19 06:34:19,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:19,353 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:34:19,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:34:19,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:19,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:34:19,504 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:19,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015104780] [2022-11-19 06:34:19,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015104780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:19,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:19,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:34:19,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661925614] [2022-11-19 06:34:19,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:19,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:34:19,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:19,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:34:19,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:34:19,507 INFO L87 Difference]: Start difference. First operand 98 states and 233 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:19,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:19,697 INFO L93 Difference]: Finished difference Result 101 states and 238 transitions. [2022-11-19 06:34:19,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:34:19,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-19 06:34:19,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:19,698 INFO L225 Difference]: With dead ends: 101 [2022-11-19 06:34:19,699 INFO L226 Difference]: Without dead ends: 101 [2022-11-19 06:34:19,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:34:19,700 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:19,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 22 Unchecked, 0.1s Time] [2022-11-19 06:34:19,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-19 06:34:19,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-11-19 06:34:19,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 96 states have (on average 2.4791666666666665) internal successors, (238), 100 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:19,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 238 transitions. [2022-11-19 06:34:19,705 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 238 transitions. Word has length 7 [2022-11-19 06:34:19,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:19,705 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 238 transitions. [2022-11-19 06:34:19,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:19,705 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 238 transitions. [2022-11-19 06:34:19,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 06:34:19,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:19,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:34:19,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:19,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:19,907 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:34:19,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:19,908 INFO L85 PathProgramCache]: Analyzing trace with hash 739945429, now seen corresponding path program 1 times [2022-11-19 06:34:19,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:19,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673921279] [2022-11-19 06:34:19,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:19,908 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 06:34:19,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:19,910 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:19,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:20,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-19 06:34:20,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:20,109 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:34:20,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:34:20,253 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 06:34:20,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:34:20,254 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:20,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673921279] [2022-11-19 06:34:20,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673921279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:20,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:20,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:34:20,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113018486] [2022-11-19 06:34:20,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:20,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:34:20,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:20,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:34:20,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:34:20,256 INFO L87 Difference]: Start difference. First operand 101 states and 238 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:20,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:20,545 INFO L93 Difference]: Finished difference Result 145 states and 348 transitions. [2022-11-19 06:34:20,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:34:20,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-19 06:34:20,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:20,546 INFO L225 Difference]: With dead ends: 145 [2022-11-19 06:34:20,546 INFO L226 Difference]: Without dead ends: 145 [2022-11-19 06:34:20,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:34:20,547 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 58 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:20,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 4 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:34:20,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-19 06:34:20,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 115. [2022-11-19 06:34:20,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 2.618181818181818) internal successors, (288), 114 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:20,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 288 transitions. [2022-11-19 06:34:20,554 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 288 transitions. Word has length 7 [2022-11-19 06:34:20,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:20,554 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 288 transitions. [2022-11-19 06:34:20,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:20,555 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 288 transitions. [2022-11-19 06:34:20,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 06:34:20,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:20,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:34:20,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:20,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:20,759 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:34:20,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:20,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1898257409, now seen corresponding path program 1 times [2022-11-19 06:34:20,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:20,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960499747] [2022-11-19 06:34:20,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:20,760 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:34:20,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:20,762 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:20,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:20,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-19 06:34:20,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:20,964 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:34:20,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:34:21,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:34:21,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:21,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:34:21,993 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:21,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960499747] [2022-11-19 06:34:21,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960499747] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:21,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [134953633] [2022-11-19 06:34:21,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:21,994 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:34:21,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:34:21,995 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:34:21,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-19 06:34:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:22,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 06:34:22,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:22,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:22,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:22,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [134953633] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:22,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480321669] [2022-11-19 06:34:22,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:22,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:22,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:34:22,897 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:34:22,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-19 06:34:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:23,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 06:34:23,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:23,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:23,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:23,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:23,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480321669] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:23,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:34:23,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 20 [2022-11-19 06:34:23,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747331817] [2022-11-19 06:34:23,160 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:34:23,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-19 06:34:23,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:23,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-19 06:34:23,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2022-11-19 06:34:23,162 INFO L87 Difference]: Start difference. First operand 115 states and 288 transitions. Second operand has 22 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:29,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:29,120 INFO L93 Difference]: Finished difference Result 475 states and 1122 transitions. [2022-11-19 06:34:29,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-19 06:34:29,122 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-19 06:34:29,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:29,124 INFO L225 Difference]: With dead ends: 475 [2022-11-19 06:34:29,124 INFO L226 Difference]: Without dead ends: 475 [2022-11-19 06:34:29,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=463, Invalid=1429, Unknown=0, NotChecked=0, Total=1892 [2022-11-19 06:34:29,126 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 646 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:29,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 73 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-19 06:34:29,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-19 06:34:29,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 296. [2022-11-19 06:34:29,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 291 states have (on average 2.7010309278350517) internal successors, (786), 295 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:29,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 786 transitions. [2022-11-19 06:34:29,139 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 786 transitions. Word has length 8 [2022-11-19 06:34:29,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:29,139 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 786 transitions. [2022-11-19 06:34:29,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:29,140 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 786 transitions. [2022-11-19 06:34:29,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 06:34:29,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:29,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:34:29,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-19 06:34:29,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2022-11-19 06:34:29,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:29,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:29,749 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:34:29,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:29,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1876994831, now seen corresponding path program 1 times [2022-11-19 06:34:29,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:29,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130795669] [2022-11-19 06:34:29,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:29,750 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 06:34:29,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:29,752 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:29,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:29,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-19 06:34:29,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:29,952 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:34:29,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:34:30,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:30,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:34:30,130 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:30,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130795669] [2022-11-19 06:34:30,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130795669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:30,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:30,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:34:30,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090893227] [2022-11-19 06:34:30,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:30,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:34:30,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:30,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:34:30,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:34:30,132 INFO L87 Difference]: Start difference. First operand 296 states and 786 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:30,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:30,312 INFO L93 Difference]: Finished difference Result 296 states and 784 transitions. [2022-11-19 06:34:30,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:34:30,313 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-19 06:34:30,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:30,315 INFO L225 Difference]: With dead ends: 296 [2022-11-19 06:34:30,315 INFO L226 Difference]: Without dead ends: 296 [2022-11-19 06:34:30,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:34:30,317 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:30,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 9 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 25 Unchecked, 0.1s Time] [2022-11-19 06:34:30,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-11-19 06:34:30,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-11-19 06:34:30,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 291 states have (on average 2.6941580756013748) internal successors, (784), 295 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:30,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 784 transitions. [2022-11-19 06:34:30,329 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 784 transitions. Word has length 9 [2022-11-19 06:34:30,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:30,330 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 784 transitions. [2022-11-19 06:34:30,330 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:30,330 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 784 transitions. [2022-11-19 06:34:30,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 06:34:30,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:30,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:34:30,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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)] Ended with exit code 0 [2022-11-19 06:34:30,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:30,546 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:34:30,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:30,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1229821271, now seen corresponding path program 1 times [2022-11-19 06:34:30,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:30,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999323104] [2022-11-19 06:34:30,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:30,547 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 06:34:30,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:30,549 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:30,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:30,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-19 06:34:30,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:30,753 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:34:30,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:34:30,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:34:30,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:31,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:34:31,835 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:31,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999323104] [2022-11-19 06:34:31,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999323104] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:31,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2080649236] [2022-11-19 06:34:31,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:31,835 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:34:31,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:34:31,839 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:34:31,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-11-19 06:34:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:32,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 06:34:32,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:32,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:32,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2080649236] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:32,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367786659] [2022-11-19 06:34:32,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:32,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:32,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:34:32,733 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:34:32,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-19 06:34:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:32,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 06:34:32,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:32,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:32,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:32,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:32,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367786659] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:32,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:34:32,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 20 [2022-11-19 06:34:32,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170213863] [2022-11-19 06:34:32,963 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:34:32,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-19 06:34:32,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:32,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-19 06:34:32,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2022-11-19 06:34:32,964 INFO L87 Difference]: Start difference. First operand 296 states and 784 transitions. Second operand has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:37,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:37,860 INFO L93 Difference]: Finished difference Result 681 states and 1684 transitions. [2022-11-19 06:34:37,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-19 06:34:37,862 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-19 06:34:37,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:37,866 INFO L225 Difference]: With dead ends: 681 [2022-11-19 06:34:37,867 INFO L226 Difference]: Without dead ends: 681 [2022-11-19 06:34:37,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=463, Invalid=1429, Unknown=0, NotChecked=0, Total=1892 [2022-11-19 06:34:37,869 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 623 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:37,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 62 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-19 06:34:37,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-11-19 06:34:37,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 494. [2022-11-19 06:34:37,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 489 states have (on average 2.8220858895705523) internal successors, (1380), 493 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:37,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1380 transitions. [2022-11-19 06:34:37,892 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1380 transitions. Word has length 10 [2022-11-19 06:34:37,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:37,892 INFO L495 AbstractCegarLoop]: Abstraction has 494 states and 1380 transitions. [2022-11-19 06:34:37,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:37,893 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1380 transitions. [2022-11-19 06:34:37,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 06:34:37,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:37,895 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-19 06:34:37,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2022-11-19 06:34:38,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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)] Ended with exit code 0 [2022-11-19 06:34:38,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-11-19 06:34:38,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:38,499 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:34:38,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:38,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1426300117, now seen corresponding path program 3 times [2022-11-19 06:34:38,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:34:38,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114453068] [2022-11-19 06:34:38,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:34:38,500 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 06:34:38,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:34:38,503 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:38,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:34:38,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-19 06:34:38,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:34:38,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-19 06:34:38,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:38,823 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:34:38,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:34:39,360 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:39,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:42,589 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:42,589 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:34:42,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114453068] [2022-11-19 06:34:42,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114453068] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:42,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [678776053] [2022-11-19 06:34:42,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:34:42,590 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:34:42,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:34:42,591 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:34:42,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-11-19 06:34:43,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-19 06:34:43,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:34:43,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-19 06:34:43,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:43,524 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:34:43,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:34:43,761 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:43,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:48,222 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:48,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [678776053] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:48,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205345300] [2022-11-19 06:34:48,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:34:48,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:48,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:34:48,224 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:34:48,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-19 06:34:50,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-19 06:34:50,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:34:50,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-19 06:34:50,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:50,400 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:34:50,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:34:50,540 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:50,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:50,984 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:50,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205345300] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:50,985 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:34:50,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11, 11] total 32 [2022-11-19 06:34:50,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588615483] [2022-11-19 06:34:50,985 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:34:50,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-19 06:34:50,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:34:50,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-19 06:34:50,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=807, Unknown=0, NotChecked=0, Total=1122 [2022-11-19 06:34:50,987 INFO L87 Difference]: Start difference. First operand 494 states and 1380 transitions. Second operand has 34 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:35:12,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:35:12,283 INFO L93 Difference]: Finished difference Result 8430 states and 24354 transitions. [2022-11-19 06:35:12,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 06:35:12,285 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-19 06:35:12,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:35:12,338 INFO L225 Difference]: With dead ends: 8430 [2022-11-19 06:35:12,338 INFO L226 Difference]: Without dead ends: 8430 [2022-11-19 06:35:12,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=610, Invalid=1282, Unknown=0, NotChecked=0, Total=1892 [2022-11-19 06:35:12,340 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3393 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 2438 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3393 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 2464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:35:12,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3393 Valid, 272 Invalid, 2464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2438 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-11-19 06:35:12,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8430 states. [2022-11-19 06:35:12,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8430 to 506. [2022-11-19 06:35:12,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 501 states have (on average 2.802395209580838) internal successors, (1404), 505 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:35:12,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 1404 transitions. [2022-11-19 06:35:12,464 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 1404 transitions. Word has length 12 [2022-11-19 06:35:12,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:35:12,465 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 1404 transitions. [2022-11-19 06:35:12,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:35:12,465 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 1404 transitions. [2022-11-19 06:35:12,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 06:35:12,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:35:12,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:35:12,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2022-11-19 06:35:12,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-19 06:35:12,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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)] Ended with exit code 0 [2022-11-19 06:35:13,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:35:13,072 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:35:13,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:35:13,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1967737254, now seen corresponding path program 1 times [2022-11-19 06:35:13,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:35:13,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776845956] [2022-11-19 06:35:13,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:35:13,073 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 06:35:13,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:35:13,074 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:35:13,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (32)] Waiting until timeout for monitored process [2022-11-19 06:35:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:35:13,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:35:13,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:35:13,250 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 06:35:13,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:35:13,251 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:35:13,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776845956] [2022-11-19 06:35:13,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776845956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:35:13,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:35:13,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:35:13,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301136711] [2022-11-19 06:35:13,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:35:13,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:35:13,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:35:13,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:35:13,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:35:13,253 INFO L87 Difference]: Start difference. First operand 506 states and 1404 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:35:13,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:35:13,446 INFO L93 Difference]: Finished difference Result 523 states and 1428 transitions. [2022-11-19 06:35:13,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:35:13,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-19 06:35:13,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:35:13,451 INFO L225 Difference]: With dead ends: 523 [2022-11-19 06:35:13,451 INFO L226 Difference]: Without dead ends: 504 [2022-11-19 06:35:13,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:35:13,452 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:35:13,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:35:13,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-11-19 06:35:13,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 494. [2022-11-19 06:35:13,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 489 states have (on average 2.789366053169734) internal successors, (1364), 493 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:35:13,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1364 transitions. [2022-11-19 06:35:13,474 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1364 transitions. Word has length 14 [2022-11-19 06:35:13,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:35:13,474 INFO L495 AbstractCegarLoop]: Abstraction has 494 states and 1364 transitions. [2022-11-19 06:35:13,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:35:13,475 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1364 transitions. [2022-11-19 06:35:13,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 06:35:13,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:35:13,476 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1] [2022-11-19 06:35:13,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (32)] Forceful destruction successful, exit code 0 [2022-11-19 06:35:13,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:35:13,692 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:35:13,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:35:13,692 INFO L85 PathProgramCache]: Analyzing trace with hash -433443920, now seen corresponding path program 2 times [2022-11-19 06:35:13,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:35:13,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650730399] [2022-11-19 06:35:13,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:35:13,693 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 06:35:13,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:35:13,695 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:35:13,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (33)] Waiting until timeout for monitored process [2022-11-19 06:35:13,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:35:13,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:35:13,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-19 06:35:13,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:35:14,049 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:35:14,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:35:14,594 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:35:14,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:35:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:35:16,913 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:35:16,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650730399] [2022-11-19 06:35:16,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650730399] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:35:16,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1499163135] [2022-11-19 06:35:16,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:35:16,914 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:35:16,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:35:16,916 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:35:16,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2022-11-19 06:35:17,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:35:17,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:35:17,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 06:35:17,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:35:18,206 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:35:18,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:35:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:35:19,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1499163135] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:35:19,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222156137] [2022-11-19 06:35:19,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:35:19,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:35:19,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:35:19,499 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:35:19,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-19 06:35:19,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:35:19,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:35:19,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-19 06:35:19,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:35:20,130 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:35:20,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:35:20,475 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:35:20,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222156137] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:35:20,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:35:20,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8, 8, 8, 8] total 35 [2022-11-19 06:35:20,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045535355] [2022-11-19 06:35:20,476 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:35:20,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-19 06:35:20,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:35:20,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-19 06:35:20,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2022-11-19 06:35:20,478 INFO L87 Difference]: Start difference. First operand 494 states and 1364 transitions. Second operand has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:36:12,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:36:12,194 INFO L93 Difference]: Finished difference Result 1804 states and 4768 transitions. [2022-11-19 06:36:12,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-19 06:36:12,197 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-19 06:36:12,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:36:12,207 INFO L225 Difference]: With dead ends: 1804 [2022-11-19 06:36:12,207 INFO L226 Difference]: Without dead ends: 1804 [2022-11-19 06:36:12,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1288 ImplicationChecksByTransitivity, 32.6s TimeCoverageRelationStatistics Valid=755, Invalid=4795, Unknown=0, NotChecked=0, Total=5550 [2022-11-19 06:36:12,209 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 723 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 3282 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 3759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 449 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:36:12,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 383 Invalid, 3759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3282 Invalid, 0 Unknown, 449 Unchecked, 23.7s Time] [2022-11-19 06:36:12,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2022-11-19 06:36:12,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 626. [2022-11-19 06:36:12,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 621 states have (on average 2.845410628019324) internal successors, (1767), 625 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:36:12,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 1767 transitions. [2022-11-19 06:36:12,245 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 1767 transitions. Word has length 15 [2022-11-19 06:36:12,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:36:12,246 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 1767 transitions. [2022-11-19 06:36:12,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:36:12,246 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 1767 transitions. [2022-11-19 06:36:12,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 06:36:12,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:36:12,248 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1] [2022-11-19 06:36:12,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-11-19 06:36:12,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (33)] Forceful destruction successful, exit code 0 [2022-11-19 06:36:12,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2022-11-19 06:36:12,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 06:36:12,858 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:36:12,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:36:12,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1005745725, now seen corresponding path program 1 times [2022-11-19 06:36:12,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:36:12,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819594] [2022-11-19 06:36:12,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:36:12,859 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 06:36:12,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:36:12,861 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:36:12,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (36)] Waiting until timeout for monitored process [2022-11-19 06:36:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:36:13,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-19 06:36:13,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:36:13,174 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:36:13,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:36:13,723 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:36:13,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:36:16,059 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:36:16,059 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:36:16,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819594] [2022-11-19 06:36:16,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819594] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:36:16,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [260345331] [2022-11-19 06:36:16,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:36:16,060 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:36:16,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:36:16,061 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:36:16,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2022-11-19 06:36:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:36:16,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 06:36:16,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:36:17,288 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:36:17,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:36:18,515 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:36:18,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [260345331] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:36:18,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258452048] [2022-11-19 06:36:18,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:36:18,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:36:18,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:36:18,517 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:36:18,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-11-19 06:36:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:36:18,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-19 06:36:18,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:36:19,304 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:36:19,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:36:19,399 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:36:19,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258452048] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:36:19,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:36:19,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8, 8, 8, 8] total 36 [2022-11-19 06:36:19,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773290374] [2022-11-19 06:36:19,400 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:36:19,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-19 06:36:19,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:36:19,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-19 06:36:19,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1187, Unknown=0, NotChecked=0, Total=1332 [2022-11-19 06:36:19,401 INFO L87 Difference]: Start difference. First operand 626 states and 1767 transitions. Second operand has 37 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 36 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:36:47,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:36:47,274 INFO L93 Difference]: Finished difference Result 1596 states and 4389 transitions. [2022-11-19 06:36:47,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-19 06:36:47,276 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 36 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-19 06:36:47,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:36:47,283 INFO L225 Difference]: With dead ends: 1596 [2022-11-19 06:36:47,284 INFO L226 Difference]: Without dead ends: 1596 [2022-11-19 06:36:47,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1289 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=646, Invalid=4756, Unknown=0, NotChecked=0, Total=5402 [2022-11-19 06:36:47,286 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 633 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 2519 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 3125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 580 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:36:47,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 378 Invalid, 3125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2519 Invalid, 0 Unknown, 580 Unchecked, 14.0s Time] [2022-11-19 06:36:47,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2022-11-19 06:36:47,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 785. [2022-11-19 06:36:47,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 780 states have (on average 2.8525641025641026) internal successors, (2225), 784 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:36:47,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 2225 transitions. [2022-11-19 06:36:47,317 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 2225 transitions. Word has length 16 [2022-11-19 06:36:47,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:36:47,318 INFO L495 AbstractCegarLoop]: Abstraction has 785 states and 2225 transitions. [2022-11-19 06:36:47,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 36 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:36:47,318 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 2225 transitions. [2022-11-19 06:36:47,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 06:36:47,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:36:47,320 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1] [2022-11-19 06:36:47,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2022-11-19 06:36:47,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-11-19 06:36:47,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (36)] Ended with exit code 0 [2022-11-19 06:36:47,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:36:47,925 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:36:47,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:36:47,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1137429893, now seen corresponding path program 2 times [2022-11-19 06:36:47,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:36:47,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469576540] [2022-11-19 06:36:47,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:36:47,927 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 06:36:47,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:36:47,928 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:36:47,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (39)] Waiting until timeout for monitored process [2022-11-19 06:36:48,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:36:48,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:36:48,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-19 06:36:48,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:36:48,220 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:36:48,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:36:48,705 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:36:48,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:36:50,995 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:36:50,996 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:36:50,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469576540] [2022-11-19 06:36:50,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469576540] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:36:50,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1656511175] [2022-11-19 06:36:50,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:36:50,996 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:36:50,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:36:50,997 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:36:50,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2022-11-19 06:36:51,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:36:51,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:36:51,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 06:36:51,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:36:52,313 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:36:52,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:36:53,422 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:36:53,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1656511175] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:36:53,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824352310] [2022-11-19 06:36:53,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:36:53,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:36:53,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:36:53,424 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:36:53,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-11-19 06:36:53,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:36:53,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:36:53,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-19 06:36:53,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:36:53,996 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:36:53,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:36:54,345 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:36:54,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824352310] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:36:54,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:36:54,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8, 8, 8, 8] total 35 [2022-11-19 06:36:54,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264733896] [2022-11-19 06:36:54,346 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:36:54,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-19 06:36:54,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:36:54,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-19 06:36:54,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2022-11-19 06:36:54,347 INFO L87 Difference]: Start difference. First operand 785 states and 2225 transitions. Second operand has 36 states, 36 states have (on average 1.6944444444444444) internal successors, (61), 35 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:37:26,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:37:26,980 INFO L93 Difference]: Finished difference Result 1988 states and 5536 transitions. [2022-11-19 06:37:26,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-19 06:37:26,994 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6944444444444444) internal successors, (61), 35 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-19 06:37:26,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:37:27,011 INFO L225 Difference]: With dead ends: 1988 [2022-11-19 06:37:27,012 INFO L226 Difference]: Without dead ends: 1988 [2022-11-19 06:37:27,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1837 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=951, Invalid=6359, Unknown=0, NotChecked=0, Total=7310 [2022-11-19 06:37:27,014 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 661 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 2585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 180 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:37:27,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 350 Invalid, 2585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2375 Invalid, 0 Unknown, 180 Unchecked, 12.2s Time] [2022-11-19 06:37:27,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1988 states. [2022-11-19 06:37:27,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1988 to 857. [2022-11-19 06:37:27,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 852 states have (on average 2.886150234741784) internal successors, (2459), 856 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:37:27,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 2459 transitions. [2022-11-19 06:37:27,049 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 2459 transitions. Word has length 16 [2022-11-19 06:37:27,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:37:27,050 INFO L495 AbstractCegarLoop]: Abstraction has 857 states and 2459 transitions. [2022-11-19 06:37:27,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6944444444444444) internal successors, (61), 35 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:37:27,051 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 2459 transitions. [2022-11-19 06:37:27,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 06:37:27,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:37:27,053 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1] [2022-11-19 06:37:27,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-11-19 06:37:27,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2022-11-19 06:37:27,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (39)] Ended with exit code 0 [2022-11-19 06:37:27,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:37:27,662 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:37:27,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:37:27,662 INFO L85 PathProgramCache]: Analyzing trace with hash 2070389424, now seen corresponding path program 3 times [2022-11-19 06:37:27,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:37:27,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391201901] [2022-11-19 06:37:27,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:37:27,663 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 06:37:27,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:37:27,664 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:37:27,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (42)] Waiting until timeout for monitored process [2022-11-19 06:37:28,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 06:37:28,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:37:28,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-19 06:37:28,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:37:28,138 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:37:28,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:37:28,972 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:37:28,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:37:32,947 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:37:32,948 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:37:32,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391201901] [2022-11-19 06:37:32,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391201901] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:37:32,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1667485458] [2022-11-19 06:37:32,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:37:32,948 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:37:32,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:37:32,950 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:37:32,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2022-11-19 06:37:34,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 06:37:34,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:37:34,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-19 06:37:34,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:37:34,159 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:37:34,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:37:34,876 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 17 treesize of output 13 [2022-11-19 06:37:35,057 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:37:35,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:37:39,226 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:37:39,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1667485458] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:37:39,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876346590] [2022-11-19 06:37:39,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:37:39,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:37:39,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:37:39,227 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:37:39,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-11-19 06:37:39,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 06:37:39,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:37:39,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-19 06:37:39,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:37:41,118 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:37:41,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:37:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:37:43,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876346590] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:37:43,638 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:37:43,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 11, 11] total 61 [2022-11-19 06:37:43,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869866766] [2022-11-19 06:37:43,638 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:37:43,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-19 06:37:43,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:37:43,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-19 06:37:43,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=762, Invalid=3144, Unknown=0, NotChecked=0, Total=3906 [2022-11-19 06:37:43,640 INFO L87 Difference]: Start difference. First operand 857 states and 2459 transitions. Second operand has 63 states, 62 states have (on average 1.5161290322580645) internal successors, (94), 62 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:52,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:52,971 INFO L93 Difference]: Finished difference Result 2874 states and 7526 transitions. [2022-11-19 06:38:52,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-19 06:38:52,974 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.5161290322580645) internal successors, (94), 62 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-19 06:38:52,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:52,980 INFO L225 Difference]: With dead ends: 2874 [2022-11-19 06:38:52,980 INFO L226 Difference]: Without dead ends: 2862 [2022-11-19 06:38:52,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4974 ImplicationChecksByTransitivity, 49.9s TimeCoverageRelationStatistics Valid=3407, Invalid=12093, Unknown=0, NotChecked=0, Total=15500 [2022-11-19 06:38:52,983 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 2359 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 7342 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2359 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 7517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 7342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:52,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2359 Valid, 824 Invalid, 7517 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [175 Valid, 7342 Invalid, 0 Unknown, 0 Unchecked, 30.5s Time] [2022-11-19 06:38:52,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2022-11-19 06:38:53,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 1224. [2022-11-19 06:38:53,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 1219 states have (on average 2.895816242821985) internal successors, (3530), 1223 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:53,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 3530 transitions. [2022-11-19 06:38:53,036 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 3530 transitions. Word has length 17 [2022-11-19 06:38:53,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:53,036 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 3530 transitions. [2022-11-19 06:38:53,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.5161290322580645) internal successors, (94), 62 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:53,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 3530 transitions. [2022-11-19 06:38:53,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 06:38:53,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:53,039 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:38:53,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (43)] Forceful destruction successful, exit code 0 [2022-11-19 06:38:53,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (42)] Ended with exit code 0 [2022-11-19 06:38:53,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-11-19 06:38:53,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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=3,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:53,645 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:38:53,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:53,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1019298491, now seen corresponding path program 2 times [2022-11-19 06:38:53,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:38:53,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345271680] [2022-11-19 06:38:53,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:38:53,646 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 06:38:53,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:38:53,647 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:38:53,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (45)] Waiting until timeout for monitored process [2022-11-19 06:38:53,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:38:53,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:38:53,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-19 06:38:53,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:53,989 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:38:53,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:38:54,599 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:54,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:38:57,022 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:57,023 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:38:57,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345271680] [2022-11-19 06:38:57,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345271680] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:38:57,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1669820349] [2022-11-19 06:38:57,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:38:57,024 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:38:57,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:38:57,025 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:38:57,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2022-11-19 06:38:57,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:38:57,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:38:57,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 06:38:57,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:58,363 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:38:58,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:38:59,649 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:38:59,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1669820349] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:38:59,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039367699] [2022-11-19 06:38:59,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:38:59,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:59,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:38:59,651 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:38:59,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-11-19 06:38:59,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:38:59,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:38:59,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-19 06:38:59,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:39:00,349 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:39:00,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:39:00,709 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:39:00,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039367699] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:39:00,710 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:39:00,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8, 8, 8, 8] total 35 [2022-11-19 06:39:00,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667842059] [2022-11-19 06:39:00,710 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:39:00,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-19 06:39:00,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:39:00,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-19 06:39:00,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2022-11-19 06:39:00,711 INFO L87 Difference]: Start difference. First operand 1224 states and 3530 transitions. Second operand has 36 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 35 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:39:46,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:39:46,540 INFO L93 Difference]: Finished difference Result 2172 states and 6010 transitions. [2022-11-19 06:39:46,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-19 06:39:46,543 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 35 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-19 06:39:46,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:39:46,551 INFO L225 Difference]: With dead ends: 2172 [2022-11-19 06:39:46,552 INFO L226 Difference]: Without dead ends: 2172 [2022-11-19 06:39:46,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1286 ImplicationChecksByTransitivity, 31.3s TimeCoverageRelationStatistics Valid=755, Invalid=4795, Unknown=0, NotChecked=0, Total=5550 [2022-11-19 06:39:46,554 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 738 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 2738 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 524 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:39:46,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 411 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2738 Invalid, 0 Unknown, 524 Unchecked, 19.3s Time] [2022-11-19 06:39:46,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2022-11-19 06:39:46,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 1419. [2022-11-19 06:39:46,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1414 states have (on average 2.900990099009901) internal successors, (4102), 1418 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:39:46,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 4102 transitions. [2022-11-19 06:39:46,605 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 4102 transitions. Word has length 17 [2022-11-19 06:39:46,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:39:46,606 INFO L495 AbstractCegarLoop]: Abstraction has 1419 states and 4102 transitions. [2022-11-19 06:39:46,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 35 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:39:46,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 4102 transitions. [2022-11-19 06:39:46,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 06:39:46,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:39:46,610 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:39:46,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (46)] Forceful destruction successful, exit code 0 [2022-11-19 06:39:46,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (45)] Ended with exit code 0 [2022-11-19 06:39:47,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-11-19 06:39:47,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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=3,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:39:47,215 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:39:47,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:39:47,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1117725703, now seen corresponding path program 1 times [2022-11-19 06:39:47,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:39:47,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926297274] [2022-11-19 06:39:47,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:47,216 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 06:39:47,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:39:47,217 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:39:47,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (48)] Waiting until timeout for monitored process [2022-11-19 06:39:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:39:47,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 06:39:47,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:39:47,516 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:39:47,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:39:47,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:39:47,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:39:47,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:39:48,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:39:48,017 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:39:48,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926297274] [2022-11-19 06:39:48,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926297274] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:39:48,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1771642429] [2022-11-19 06:39:48,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:48,017 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:39:48,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:39:48,023 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:39:48,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (49)] Waiting until timeout for monitored process [2022-11-19 06:39:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:39:48,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 06:39:48,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:39:48,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:39:48,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:39:49,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:39:49,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1771642429] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:39:49,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42600052] [2022-11-19 06:39:49,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:49,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:39:49,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:39:49,011 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:39:49,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-11-19 06:39:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:39:49,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 06:39:49,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:39:49,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 06:39:49,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:39:49,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 06:39:49,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42600052] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:39:49,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:39:49,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7, 7, 7, 7] total 31 [2022-11-19 06:39:49,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362802396] [2022-11-19 06:39:49,922 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:39:49,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-19 06:39:49,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:39:49,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-19 06:39:49,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2022-11-19 06:39:49,925 INFO L87 Difference]: Start difference. First operand 1419 states and 4102 transitions. Second operand has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 31 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:39:55,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:39:55,004 INFO L93 Difference]: Finished difference Result 1871 states and 5055 transitions. [2022-11-19 06:39:55,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-19 06:39:55,006 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 31 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-19 06:39:55,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:39:55,012 INFO L225 Difference]: With dead ends: 1871 [2022-11-19 06:39:55,012 INFO L226 Difference]: Without dead ends: 1826 [2022-11-19 06:39:55,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 964 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=853, Invalid=3307, Unknown=0, NotChecked=0, Total=4160 [2022-11-19 06:39:55,015 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 459 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:39:55,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 130 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-19 06:39:55,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2022-11-19 06:39:55,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 1354. [2022-11-19 06:39:55,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1349 states have (on average 2.765752409191994) internal successors, (3731), 1353 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:39:55,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 3731 transitions. [2022-11-19 06:39:55,063 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 3731 transitions. Word has length 18 [2022-11-19 06:39:55,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:39:55,063 INFO L495 AbstractCegarLoop]: Abstraction has 1354 states and 3731 transitions. [2022-11-19 06:39:55,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 31 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:39:55,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 3731 transitions. [2022-11-19 06:39:55,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 06:39:55,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:39:55,067 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:39:55,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (48)] Ended with exit code 0 [2022-11-19 06:39:55,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (49)] Forceful destruction successful, exit code 0 [2022-11-19 06:39:55,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-11-19 06:39:55,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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=3,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:39:55,681 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:39:55,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:39:55,682 INFO L85 PathProgramCache]: Analyzing trace with hash 464603738, now seen corresponding path program 1 times [2022-11-19 06:39:55,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:39:55,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605778560] [2022-11-19 06:39:55,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:55,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:39:55,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:39:55,684 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:39:55,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (51)] Waiting until timeout for monitored process [2022-11-19 06:39:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:39:55,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-19 06:39:55,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:39:56,014 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:39:56,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:39:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:39:56,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:39:59,053 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:39:59,053 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:39:59,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605778560] [2022-11-19 06:39:59,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [605778560] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:39:59,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2043229463] [2022-11-19 06:39:59,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:59,054 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:39:59,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:39:59,055 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:39:59,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (52)] Waiting until timeout for monitored process [2022-11-19 06:39:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:39:59,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 06:39:59,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:40:00,400 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:40:00,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:40:01,692 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:40:01,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2043229463] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:40:01,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919362512] [2022-11-19 06:40:01,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:40:01,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:40:01,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:40:01,694 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:40:01,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-11-19 06:40:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:40:01,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-19 06:40:01,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:40:02,491 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:40:02,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:40:02,585 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:40:02,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919362512] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:40:02,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:40:02,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8, 8, 8, 8] total 36 [2022-11-19 06:40:02,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574109346] [2022-11-19 06:40:02,586 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:40:02,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-19 06:40:02,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:40:02,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-19 06:40:02,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1187, Unknown=0, NotChecked=0, Total=1332 [2022-11-19 06:40:02,588 INFO L87 Difference]: Start difference. First operand 1354 states and 3731 transitions. Second operand has 37 states, 37 states have (on average 1.864864864864865) internal successors, (69), 36 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:24,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:40:24,259 INFO L93 Difference]: Finished difference Result 1992 states and 5180 transitions. [2022-11-19 06:40:24,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-19 06:40:24,261 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.864864864864865) internal successors, (69), 36 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-19 06:40:24,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:40:24,268 INFO L225 Difference]: With dead ends: 1992 [2022-11-19 06:40:24,268 INFO L226 Difference]: Without dead ends: 1992 [2022-11-19 06:40:24,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=473, Invalid=3559, Unknown=0, NotChecked=0, Total=4032 [2022-11-19 06:40:24,270 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 435 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 2240 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 3003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 740 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:40:24,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 295 Invalid, 3003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2240 Invalid, 0 Unknown, 740 Unchecked, 13.3s Time] [2022-11-19 06:40:24,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2022-11-19 06:40:24,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1392. [2022-11-19 06:40:24,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1387 states have (on average 2.7469358327325164) internal successors, (3810), 1391 states have internal predecessors, (3810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 3810 transitions. [2022-11-19 06:40:24,318 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 3810 transitions. Word has length 18 [2022-11-19 06:40:24,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:40:24,319 INFO L495 AbstractCegarLoop]: Abstraction has 1392 states and 3810 transitions. [2022-11-19 06:40:24,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.864864864864865) internal successors, (69), 36 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:40:24,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 3810 transitions. [2022-11-19 06:40:24,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 06:40:24,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:40:24,323 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:40:24,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (52)] Forceful destruction successful, exit code 0 [2022-11-19 06:40:24,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (51)] Forceful destruction successful, exit code 0 [2022-11-19 06:40:24,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-11-19 06:40:24,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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=3,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:40:24,928 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:40:24,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:40:24,929 INFO L85 PathProgramCache]: Analyzing trace with hash 581906654, now seen corresponding path program 2 times [2022-11-19 06:40:24,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:40:24,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726749383] [2022-11-19 06:40:24,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:40:24,929 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 06:40:24,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:40:24,931 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:40:24,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (54)] Waiting until timeout for monitored process [2022-11-19 06:40:25,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:40:25,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:40:25,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-19 06:40:25,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:40:25,201 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-19 06:40:25,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-19 06:40:25,820 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:40:25,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:40:27,881 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:40:27,881 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:40:27,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726749383] [2022-11-19 06:40:27,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726749383] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:40:27,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1253759287] [2022-11-19 06:40:27,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:40:27,882 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:40:27,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:40:27,883 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:40:27,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (55)] Waiting until timeout for monitored process [2022-11-19 06:40:28,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:40:28,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:40:28,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 06:40:28,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:40:28,865 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:40:28,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:40:29,821 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:40:29,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1253759287] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:40:29,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042414959] [2022-11-19 06:40:29,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:40:29,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:40:29,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:40:29,822 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:40:29,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-11-19 06:40:30,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:40:30,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:40:30,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-19 06:40:30,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:40:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:40:30,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:40:30,498 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:40:30,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042414959] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:40:30,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:40:30,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8, 8, 8, 8] total 35 [2022-11-19 06:40:30,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460590666] [2022-11-19 06:40:30,499 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:40:30,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-19 06:40:30,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:40:30,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-19 06:40:30,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=985, Unknown=0, NotChecked=0, Total=1260 [2022-11-19 06:40:30,501 INFO L87 Difference]: Start difference. First operand 1392 states and 3810 transitions. Second operand has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 35 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:41:01,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:41:01,229 INFO L93 Difference]: Finished difference Result 2284 states and 5957 transitions. [2022-11-19 06:41:01,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-19 06:41:01,233 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 35 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-19 06:41:01,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:41:01,237 INFO L225 Difference]: With dead ends: 2284 [2022-11-19 06:41:01,237 INFO L226 Difference]: Without dead ends: 2284 [2022-11-19 06:41:01,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=985, Invalid=3175, Unknown=0, NotChecked=0, Total=4160 [2022-11-19 06:41:01,238 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 569 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 1915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:41:01,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 206 Invalid, 1915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 13.9s Time] [2022-11-19 06:41:01,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2284 states. [2022-11-19 06:41:01,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2284 to 1466. [2022-11-19 06:41:01,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1461 states have (on average 2.7440109514031485) internal successors, (4009), 1465 states have internal predecessors, (4009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:41:01,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 4009 transitions. [2022-11-19 06:41:01,286 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 4009 transitions. Word has length 18 [2022-11-19 06:41:01,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:41:01,287 INFO L495 AbstractCegarLoop]: Abstraction has 1466 states and 4009 transitions. [2022-11-19 06:41:01,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 35 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:41:01,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 4009 transitions. [2022-11-19 06:41:01,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 06:41:01,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:01,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:41:01,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (54)] Forceful destruction successful, exit code 0 [2022-11-19 06:41:01,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-11-19 06:41:01,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (55)] Forceful destruction successful, exit code 0 [2022-11-19 06:41:01,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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=3,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 06:41:01,908 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:41:01,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:01,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1800243389, now seen corresponding path program 1 times [2022-11-19 06:41:01,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:41:01,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203926235] [2022-11-19 06:41:01,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:01,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:41:01,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:41:01,910 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:41:01,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (57)] Waiting until timeout for monitored process [2022-11-19 06:41:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:02,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-19 06:41:02,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:41:02,244 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 39 treesize of output 37 [2022-11-19 06:41:02,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 06:41:02,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2022-11-19 06:41:02,590 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:02,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 46 [2022-11-19 06:41:02,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:41:02,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:41:03,359 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1499 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1499) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsle c_~counter~0 (bvadd (_ bv2147483647 32) .cse0))) (= (bvadd (bvneg .cse0) c_~counter~0) (_ bv0 32))))) (forall ((v_ArrVal_1499 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1499) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse5) c_~counter~0) (_ bv0 32)) (not (bvsge .cse5 (_ bv0 32)))))))) is different from false [2022-11-19 06:41:03,455 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1499 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1499) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse0) |c_thread1Thread1of1ForFork1_~tmp~0#1|) (_ bv0 32)) (not (bvsge .cse0 (_ bv0 32)))))) (forall ((v_ArrVal_1499 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1499) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd (_ bv2147483647 32) .cse5))) (= (bvadd (bvneg .cse5) |c_thread1Thread1of1ForFork1_~tmp~0#1|) (_ bv0 32))))))) is different from false [2022-11-19 06:41:03,577 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (let ((.cse8 (select |c_#memory_int| c_~A~0.base)) (.cse9 (bvmul (_ bv4 32) |c_thread1Thread1of1ForFork1_~i~0#1|))) (concat (concat (concat (select .cse8 (bvadd .cse9 (_ bv3 32) c_~A~0.offset)) (select .cse8 (bvadd .cse9 (_ bv2 32) c_~A~0.offset))) (select .cse8 (bvadd .cse9 c_~A~0.offset (_ bv1 32)))) (select .cse8 (bvadd .cse9 c_~A~0.offset))))) (.cse3 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse4 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse5 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1499 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1499) c_~A~0.base))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse0) c_~counter~0 .cse1) (_ bv0 32)) (not (bvsle (bvadd c_~counter~0 .cse1) (bvadd (_ bv2147483647 32) .cse0)))))) (forall ((v_ArrVal_1499 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1499) c_~A~0.base))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse6) c_~counter~0 .cse1) (_ bv0 32)) (not (bvsge .cse6 (_ bv0 32)))))))) is different from false [2022-11-19 06:41:03,658 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse4 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse5 (bvadd c_~A~0.offset (_ bv1 32)))) (let ((.cse1 (let ((.cse8 (select |c_#memory_int| c_~A~0.base))) (concat (concat (concat (select .cse8 .cse3) (select .cse8 .cse4)) (select .cse8 .cse5)) (select .cse8 c_~A~0.offset))))) (and (forall ((v_ArrVal_1499 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1499) c_~A~0.base))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse0) c_~counter~0 .cse1) (_ bv0 32)) (not (bvsle (bvadd c_~counter~0 .cse1) (bvadd (_ bv2147483647 32) .cse0)))))) (forall ((v_ArrVal_1499 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1499) c_~A~0.base))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse6) c_~counter~0 .cse1) (_ bv0 32)) (not (bvsge .cse6 (_ bv0 32))))))))) is different from false [2022-11-19 06:41:03,758 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:03,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2012 treesize of output 1484 [2022-11-19 06:41:03,789 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:03,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1484 treesize of output 1260 [2022-11-19 06:41:03,821 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:03,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1260 treesize of output 924 [2022-11-19 06:41:04,823 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:04,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1276 treesize of output 968 [2022-11-19 06:41:04,846 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:04,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 968 treesize of output 800 [2022-11-19 06:41:04,866 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:04,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 800 treesize of output 604 [2022-11-19 06:41:06,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-19 06:41:06,570 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:41:06,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203926235] [2022-11-19 06:41:06,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203926235] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:41:06,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1208498330] [2022-11-19 06:41:06,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:06,570 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:41:06,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:41:06,572 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:41:06,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (58)] Waiting until timeout for monitored process [2022-11-19 06:41:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:07,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-19 06:41:07,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:41:07,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:41:07,687 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 38 treesize of output 34 [2022-11-19 06:41:08,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 18 [2022-11-19 06:41:08,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:41:08,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:41:08,551 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1524 (Array (_ BitVec 32) (_ BitVec 8)))) (= (_ bv0 32) (bvadd (bvneg (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1524) c_~A~0.base))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) c_~A~0.offset)) (select .cse0 (bvadd (_ bv2 32) c_~A~0.offset))) (select .cse0 (bvadd c_~A~0.offset (_ bv1 32)))) (select .cse0 c_~A~0.offset)))) |c_thread1Thread1of1ForFork1_~tmp~0#1|))) is different from false [2022-11-19 06:41:08,769 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:41:08,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 154 treesize of output 102 [2022-11-19 06:41:08,793 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:08,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 23 [2022-11-19 06:41:12,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:41:12,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1208498330] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:41:12,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145180604] [2022-11-19 06:41:12,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:12,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:41:12,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:41:12,034 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:41:12,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-11-19 06:41:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:12,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-19 06:41:12,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:41:12,330 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 26 treesize of output 24 [2022-11-19 06:41:12,438 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 38 treesize of output 34 [2022-11-19 06:41:12,519 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:12,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 46 [2022-11-19 06:41:12,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:41:12,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:41:12,818 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1551 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1551) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsge .cse0 (_ bv0 32))) (= (bvadd c_~counter~0 (bvneg .cse0)) (_ bv0 32))))) (forall ((v_ArrVal_1551 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1551) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsle c_~counter~0 (bvadd (_ bv2147483647 32) .cse5))) (= (bvadd c_~counter~0 (bvneg .cse5)) (_ bv0 32))))))) is different from false [2022-11-19 06:41:12,914 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1551 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1551) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsge .cse0 (_ bv0 32))) (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse0)) (_ bv0 32))))) (forall ((v_ArrVal_1551 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1551) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse5)) (_ bv0 32)) (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd (_ bv2147483647 32) .cse5)))))))) is different from false [2022-11-19 06:41:13,191 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:41:13,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 146 [2022-11-19 06:41:13,214 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:13,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 54 [2022-11-19 06:41:15,283 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:41:15,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 310 treesize of output 166 [2022-11-19 06:41:15,308 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:15,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 74 [2022-11-19 06:41:24,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-19 06:41:24,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145180604] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:41:24,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:41:24,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 33 [2022-11-19 06:41:24,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177049266] [2022-11-19 06:41:24,574 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:41:24,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-19 06:41:24,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:41:24,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-19 06:41:24,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=637, Unknown=13, NotChecked=406, Total=1190 [2022-11-19 06:41:24,576 INFO L87 Difference]: Start difference. First operand 1466 states and 4009 transitions. Second operand has 35 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:41:28,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:41:28,175 INFO L93 Difference]: Finished difference Result 1585 states and 4277 transitions. [2022-11-19 06:41:28,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 06:41:28,177 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-19 06:41:28,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:41:28,181 INFO L225 Difference]: With dead ends: 1585 [2022-11-19 06:41:28,181 INFO L226 Difference]: Without dead ends: 1578 [2022-11-19 06:41:28,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 70 SyntacticMatches, 10 SemanticMatches, 36 ConstructedPredicates, 7 IntricatePredicates, 3 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=165, Invalid=780, Unknown=13, NotChecked=448, Total=1406 [2022-11-19 06:41:28,182 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 11 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 194 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:41:28,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 38 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 194 Unchecked, 0.5s Time] [2022-11-19 06:41:28,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2022-11-19 06:41:28,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1471. [2022-11-19 06:41:28,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1466 states have (on average 2.7401091405184173) internal successors, (4017), 1470 states have internal predecessors, (4017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:41:28,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 4017 transitions. [2022-11-19 06:41:28,222 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 4017 transitions. Word has length 19 [2022-11-19 06:41:28,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:41:28,222 INFO L495 AbstractCegarLoop]: Abstraction has 1471 states and 4017 transitions. [2022-11-19 06:41:28,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:41:28,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 4017 transitions. [2022-11-19 06:41:28,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 06:41:28,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:28,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:41:28,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-11-19 06:41:28,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (57)] Ended with exit code 0 [2022-11-19 06:41:28,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (58)] Ended with exit code 0 [2022-11-19 06:41:28,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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=3,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 06:41:28,834 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:41:28,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:28,834 INFO L85 PathProgramCache]: Analyzing trace with hash 942613981, now seen corresponding path program 2 times [2022-11-19 06:41:28,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:41:28,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297276113] [2022-11-19 06:41:28,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:41:28,835 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 06:41:28,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:41:28,836 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:41:28,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (60)] Waiting until timeout for monitored process [2022-11-19 06:41:29,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:41:29,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:41:29,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-19 06:41:29,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:41:29,142 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 26 treesize of output 24 [2022-11-19 06:41:29,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 06:41:29,485 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 38 treesize of output 34 [2022-11-19 06:41:29,646 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:29,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 46 [2022-11-19 06:41:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:41:29,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:41:30,430 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1579 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1579) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (= (bvadd c_~counter~0 (bvneg .cse0)) (_ bv0 32)) (not (bvsle c_~counter~0 (bvadd (_ bv2147483647 32) .cse0)))))) (forall ((v_ArrVal_1579 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1579) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (= (bvadd c_~counter~0 (bvneg .cse5)) (_ bv0 32)) (not (bvsge .cse5 (_ bv0 32)))))))) is different from false [2022-11-19 06:41:30,543 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1579 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1579) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsge .cse0 (_ bv0 32))) (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse0)) (_ bv0 32))))) (forall ((v_ArrVal_1579 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1579) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd (_ bv2147483647 32) .cse5))) (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse5)) (_ bv0 32))))))) is different from false [2022-11-19 06:41:30,676 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (let ((.cse8 (select |c_#memory_int| c_~A~0.base)) (.cse9 (bvmul (_ bv4 32) |c_thread1Thread1of1ForFork1_~i~0#1|))) (concat (concat (concat (select .cse8 (bvadd .cse9 (_ bv3 32) c_~A~0.offset)) (select .cse8 (bvadd .cse9 (_ bv2 32) c_~A~0.offset))) (select .cse8 (bvadd .cse9 c_~A~0.offset (_ bv1 32)))) (select .cse8 (bvadd .cse9 c_~A~0.offset))))) (.cse3 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse4 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse5 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1579 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1579) c_~A~0.base))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 c_~A~0.offset))))) (or (= (bvadd c_~counter~0 (bvneg .cse0) .cse1) (_ bv0 32)) (not (bvsle (bvadd c_~counter~0 .cse1) (bvadd (_ bv2147483647 32) .cse0)))))) (forall ((v_ArrVal_1579 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1579) c_~A~0.base))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 c_~A~0.offset))))) (or (= (bvadd c_~counter~0 (bvneg .cse6) .cse1) (_ bv0 32)) (not (bvsge .cse6 (_ bv0 32)))))))) is different from false [2022-11-19 06:41:30,784 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse4 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse5 (bvadd c_~A~0.offset (_ bv1 32)))) (let ((.cse1 (let ((.cse8 (select |c_#memory_int| c_~A~0.base))) (concat (concat (concat (select .cse8 .cse3) (select .cse8 .cse4)) (select .cse8 .cse5)) (select .cse8 c_~A~0.offset))))) (and (forall ((v_ArrVal_1579 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1579) c_~A~0.base))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 c_~A~0.offset))))) (or (= (bvadd c_~counter~0 (bvneg .cse0) .cse1) (_ bv0 32)) (not (bvsge .cse0 (_ bv0 32)))))) (forall ((v_ArrVal_1579 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1579) c_~A~0.base))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 c_~A~0.offset))))) (or (= (bvadd c_~counter~0 (bvneg .cse6) .cse1) (_ bv0 32)) (not (bvsle (bvadd c_~counter~0 .cse1) (bvadd (_ bv2147483647 32) .cse6))))))))) is different from false [2022-11-19 06:41:30,880 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:30,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 996 treesize of output 732 [2022-11-19 06:41:30,907 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:30,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 732 treesize of output 620 [2022-11-19 06:41:30,931 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:30,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 620 treesize of output 452 [2022-11-19 06:41:32,724 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:32,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 628 treesize of output 474 [2022-11-19 06:41:32,746 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:32,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 474 treesize of output 390 [2022-11-19 06:41:32,768 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:32,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 390 treesize of output 292 [2022-11-19 06:41:50,247 WARN L233 SmtUtils]: Spent 10.76s on a formula simplification. DAG size of input: 250 DAG size of output: 31 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:41:50,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-19 06:41:50,288 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:41:50,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297276113] [2022-11-19 06:41:50,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297276113] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:41:50,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [849801004] [2022-11-19 06:41:50,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:41:50,288 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:41:50,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:41:50,289 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:41:50,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (61)] Waiting until timeout for monitored process [2022-11-19 06:41:50,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:41:50,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:41:50,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-19 06:41:50,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:41:50,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:41:50,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:41:50,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:41:50,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-19 06:41:51,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 06:41:51,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:41:51,694 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 38 treesize of output 34 [2022-11-19 06:41:52,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 18 [2022-11-19 06:41:52,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:41:52,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:41:52,538 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1610 (Array (_ BitVec 32) (_ BitVec 8)))) (= (bvadd (bvneg (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1610) c_~A~0.base))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) c_~A~0.offset)) (select .cse0 (bvadd (_ bv2 32) c_~A~0.offset))) (select .cse0 (bvadd c_~A~0.offset (_ bv1 32)))) (select .cse0 c_~A~0.offset)))) c_~counter~0) (_ bv0 32))) is different from false [2022-11-19 06:41:53,211 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1610 (Array (_ BitVec 32) (_ BitVec 8)))) (= (_ bv0 32) (let ((.cse1 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse2 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse3 (bvadd c_~A~0.offset (_ bv1 32)))) (bvadd (bvneg (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1610) c_~A~0.base))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 c_~A~0.offset)))) c_~counter~0 (let ((.cse4 (select |c_#memory_int| c_~A~0.base))) (concat (concat (concat (select .cse4 .cse1) (select .cse4 .cse2)) (select .cse4 .cse3)) (select .cse4 c_~A~0.offset))))))) is different from false [2022-11-19 06:41:53,254 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1609 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1610 (Array (_ BitVec 32) (_ BitVec 8)))) (= (let ((.cse1 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv3 32))) (.cse2 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv2 32))) (.cse3 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv1 32))) (.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1609))) (bvadd (let ((.cse0 (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) c_~counter~0 (bvneg (let ((.cse5 (select (store .cse4 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1610) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse5 .cse1) (select .cse5 .cse2)) (select .cse5 .cse3)) (select .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))))) (_ bv0 32))) is different from false [2022-11-19 06:41:53,355 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:53,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 387 treesize of output 151 [2022-11-19 06:41:53,378 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:53,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 494 treesize of output 362 [2022-11-19 06:41:53,401 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:53,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 362 treesize of output 306 [2022-11-19 06:41:53,422 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:53,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 306 treesize of output 222 [2022-11-19 06:41:55,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-19 06:41:55,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [849801004] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:41:55,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492867746] [2022-11-19 06:41:55,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:41:55,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:41:55,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:41:55,485 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:41:55,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-11-19 06:41:55,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:41:55,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:41:55,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-19 06:41:55,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:41:55,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-19 06:41:56,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:41:56,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:41:56,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:41:56,016 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 26 treesize of output 35 [2022-11-19 06:41:56,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 06:41:56,311 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 38 treesize of output 34 [2022-11-19 06:41:56,390 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:56,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 46 [2022-11-19 06:41:56,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:41:56,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:41:56,735 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1643 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1643) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse0) c_~counter~0) (_ bv0 32)) (not (bvsge .cse0 (_ bv0 32)))))) (forall ((v_ArrVal_1643 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1643) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse5) c_~counter~0) (_ bv0 32)) (not (bvsle c_~counter~0 (bvadd (_ bv2147483647 32) .cse5)))))))) is different from false [2022-11-19 06:41:57,466 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (let ((.cse8 (select |c_#memory_int| c_~A~0.base)) (.cse9 (bvmul (_ bv4 32) |c_thread1Thread1of1ForFork1_~i~0#1|))) (concat (concat (concat (select .cse8 (bvadd .cse9 (_ bv3 32) c_~A~0.offset)) (select .cse8 (bvadd .cse9 (_ bv2 32) c_~A~0.offset))) (select .cse8 (bvadd .cse9 c_~A~0.offset (_ bv1 32)))) (select .cse8 (bvadd .cse9 c_~A~0.offset))))) (.cse3 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse4 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse5 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1643 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1643) c_~A~0.base))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 c_~A~0.offset))))) (or (= (_ bv0 32) (bvadd (bvneg .cse0) c_~counter~0 .cse1)) (not (bvsge .cse0 (_ bv0 32)))))) (forall ((v_ArrVal_1643 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1643) c_~A~0.base))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 c_~A~0.offset))))) (or (= (_ bv0 32) (bvadd (bvneg .cse6) c_~counter~0 .cse1)) (not (bvsle (bvadd c_~counter~0 .cse1) (bvadd (_ bv2147483647 32) .cse6)))))))) is different from false [2022-11-19 06:41:57,542 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse4 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse5 (bvadd c_~A~0.offset (_ bv1 32)))) (let ((.cse1 (let ((.cse8 (select |c_#memory_int| c_~A~0.base))) (concat (concat (concat (select .cse8 .cse3) (select .cse8 .cse4)) (select .cse8 .cse5)) (select .cse8 c_~A~0.offset))))) (and (forall ((v_ArrVal_1643 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1643) c_~A~0.base))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse0) c_~counter~0 .cse1) (_ bv0 32)) (not (bvsle (bvadd c_~counter~0 .cse1) (bvadd (_ bv2147483647 32) .cse0)))))) (forall ((v_ArrVal_1643 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1643) c_~A~0.base))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse6) c_~counter~0 .cse1) (_ bv0 32)) (not (bvsge .cse6 (_ bv0 32))))))))) is different from false [2022-11-19 06:41:57,691 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv3 32))) (.cse4 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv2 32))) (.cse5 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv1 32)))) (and (forall ((v_ArrVal_1642 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1643 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1642))) (let ((.cse0 (let ((.cse7 (select .cse6 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (.cse1 (let ((.cse2 (select (store .cse6 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1643) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) (or (not (bvsle (bvadd c_~counter~0 .cse0) (bvadd (_ bv2147483647 32) .cse1))) (= (bvadd c_~counter~0 .cse0 (bvneg .cse1)) (_ bv0 32)))))) (forall ((v_ArrVal_1642 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1643 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1642))) (let ((.cse10 (let ((.cse11 (select (store .cse9 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1643) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse11 .cse3) (select .cse11 .cse4)) (select .cse11 .cse5)) (select .cse11 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) (or (= (bvadd c_~counter~0 (let ((.cse8 (select .cse9 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse8 .cse3) (select .cse8 .cse4)) (select .cse8 .cse5)) (select .cse8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (bvneg .cse10)) (_ bv0 32)) (not (bvsge .cse10 (_ bv0 32))))))))) is different from false [2022-11-19 06:41:57,796 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:57,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 588 treesize of output 207 [2022-11-19 06:41:57,818 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:57,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1276 treesize of output 968 [2022-11-19 06:41:57,840 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:57,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 968 treesize of output 800 [2022-11-19 06:41:57,864 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:57,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 800 treesize of output 604 [2022-11-19 06:41:58,294 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:58,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 776 treesize of output 251 [2022-11-19 06:41:58,320 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:58,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 996 treesize of output 732 [2022-11-19 06:41:58,347 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:58,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 732 treesize of output 620 [2022-11-19 06:41:58,373 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:58,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 620 treesize of output 452 [2022-11-19 06:42:01,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-19 06:42:01,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492867746] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:42:01,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:42:01,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10, 10, 10, 10] total 40 [2022-11-19 06:42:01,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281578621] [2022-11-19 06:42:01,248 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:42:01,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-19 06:42:01,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:42:01,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-19 06:42:01,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=773, Unknown=42, NotChecked=748, Total=1722 [2022-11-19 06:42:01,249 INFO L87 Difference]: Start difference. First operand 1471 states and 4017 transitions. Second operand has 42 states, 41 states have (on average 1.829268292682927) internal successors, (75), 41 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:42:05,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:05,480 INFO L93 Difference]: Finished difference Result 1578 states and 4256 transitions. [2022-11-19 06:42:05,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-19 06:42:05,482 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.829268292682927) internal successors, (75), 41 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-19 06:42:05,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:05,484 INFO L225 Difference]: With dead ends: 1578 [2022-11-19 06:42:05,485 INFO L226 Difference]: Without dead ends: 1570 [2022-11-19 06:42:05,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 64 SyntacticMatches, 14 SemanticMatches, 43 ConstructedPredicates, 11 IntricatePredicates, 4 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=184, Invalid=939, Unknown=43, NotChecked=814, Total=1980 [2022-11-19 06:42:05,486 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 16 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 323 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:05,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 50 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 323 Unchecked, 0.5s Time] [2022-11-19 06:42:05,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2022-11-19 06:42:05,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1473. [2022-11-19 06:42:05,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1473 states, 1468 states have (on average 2.7384196185286105) internal successors, (4020), 1472 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:42:05,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 4020 transitions. [2022-11-19 06:42:05,518 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 4020 transitions. Word has length 19 [2022-11-19 06:42:05,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:05,518 INFO L495 AbstractCegarLoop]: Abstraction has 1473 states and 4020 transitions. [2022-11-19 06:42:05,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.829268292682927) internal successors, (75), 41 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:42:05,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 4020 transitions. [2022-11-19 06:42:05,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 06:42:05,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:05,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:42:05,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (61)] Forceful destruction successful, exit code 0 [2022-11-19 06:42:05,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-11-19 06:42:05,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (60)] Ended with exit code 0 [2022-11-19 06:42:06,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:42:06,127 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:42:06,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:06,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1639417253, now seen corresponding path program 3 times [2022-11-19 06:42:06,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:42:06,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744828589] [2022-11-19 06:42:06,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:42:06,128 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 06:42:06,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:42:06,129 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:42:06,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (63)] Waiting until timeout for monitored process [2022-11-19 06:42:06,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 06:42:06,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:42:06,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-19 06:42:06,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:42:06,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-19 06:42:06,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 06:42:06,891 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 38 treesize of output 34 [2022-11-19 06:42:07,130 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:42:07,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 46 [2022-11-19 06:42:07,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:42:07,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:42:08,068 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1673 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1673) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsge .cse0 (_ bv0 32))) (= (bvadd (bvneg .cse0) c_~counter~0) (_ bv0 32))))) (forall ((v_ArrVal_1673 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1673) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse5) c_~counter~0) (_ bv0 32)) (not (bvsle c_~counter~0 (bvadd .cse5 (_ bv2147483647 32))))))))) is different from false [2022-11-19 06:42:08,165 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1673 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1673) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse0) |c_thread1Thread1of1ForFork1_~tmp~0#1|) (_ bv0 32)) (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd .cse0 (_ bv2147483647 32))))))) (forall ((v_ArrVal_1673 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1673) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse5) |c_thread1Thread1of1ForFork1_~tmp~0#1|) (_ bv0 32)) (not (bvsge .cse5 (_ bv0 32)))))))) is different from false [2022-11-19 06:42:08,265 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (let ((.cse8 (select |c_#memory_int| c_~A~0.base)) (.cse9 (bvmul (_ bv4 32) |c_thread1Thread1of1ForFork1_~i~0#1|))) (concat (concat (concat (select .cse8 (bvadd .cse9 (_ bv3 32) c_~A~0.offset)) (select .cse8 (bvadd .cse9 (_ bv2 32) c_~A~0.offset))) (select .cse8 (bvadd .cse9 c_~A~0.offset (_ bv1 32)))) (select .cse8 (bvadd .cse9 c_~A~0.offset))))) (.cse3 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse4 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse5 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1673 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1673) c_~A~0.base))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse0) c_~counter~0 .cse1) (_ bv0 32)) (not (bvsge .cse0 (_ bv0 32)))))) (forall ((v_ArrVal_1673 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1673) c_~A~0.base))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 c_~A~0.offset))))) (or (not (bvsle (bvadd c_~counter~0 .cse1) (bvadd .cse6 (_ bv2147483647 32)))) (= (bvadd (bvneg .cse6) c_~counter~0 .cse1) (_ bv0 32))))))) is different from false [2022-11-19 06:42:08,353 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse4 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse5 (bvadd c_~A~0.offset (_ bv1 32)))) (let ((.cse0 (let ((.cse8 (select |c_#memory_int| c_~A~0.base))) (concat (concat (concat (select .cse8 .cse3) (select .cse8 .cse4)) (select .cse8 .cse5)) (select .cse8 c_~A~0.offset))))) (and (forall ((v_ArrVal_1673 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse1 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1673) c_~A~0.base))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 c_~A~0.offset))))) (or (not (bvsle (bvadd c_~counter~0 .cse0) (bvadd .cse1 (_ bv2147483647 32)))) (= (bvadd (bvneg .cse1) c_~counter~0 .cse0) (_ bv0 32))))) (forall ((v_ArrVal_1673 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1673) c_~A~0.base))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse6) c_~counter~0 .cse0) (_ bv0 32)) (not (bvsge .cse6 (_ bv0 32))))))))) is different from false [2022-11-19 06:42:08,463 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:42:08,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 996 treesize of output 732 [2022-11-19 06:42:08,491 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:42:08,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 732 treesize of output 620 [2022-11-19 06:42:08,515 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:42:08,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 620 treesize of output 452 [2022-11-19 06:42:10,073 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:42:10,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 628 treesize of output 474 [2022-11-19 06:42:10,095 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:42:10,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 474 treesize of output 390 [2022-11-19 06:42:10,115 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:42:10,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 390 treesize of output 292 [2022-11-19 06:42:17,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-19 06:42:17,326 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:42:17,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744828589] [2022-11-19 06:42:17,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744828589] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:42:17,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [15649035] [2022-11-19 06:42:17,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:42:17,327 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:42:17,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:42:17,328 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:42:17,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (64)] Waiting until timeout for monitored process [2022-11-19 06:42:17,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 06:42:17,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:42:17,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-19 06:42:17,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:42:18,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:18,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:18,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:18,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-19 06:42:18,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 06:42:18,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:42:18,907 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 38 treesize of output 34 [2022-11-19 06:42:19,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 18 [2022-11-19 06:42:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:42:19,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:42:20,033 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1704 (Array (_ BitVec 32) (_ BitVec 8)))) (= (bvadd (bvneg (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1704) c_~A~0.base))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) c_~A~0.offset)) (select .cse0 (bvadd (_ bv2 32) c_~A~0.offset))) (select .cse0 (bvadd c_~A~0.offset (_ bv1 32)))) (select .cse0 c_~A~0.offset)))) |c_thread1Thread1of1ForFork1_~tmp~0#1|) (_ bv0 32))) is different from false [2022-11-19 06:42:20,072 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1704 (Array (_ BitVec 32) (_ BitVec 8)))) (= (bvadd (bvneg (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1704) c_~A~0.base))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) c_~A~0.offset)) (select .cse0 (bvadd (_ bv2 32) c_~A~0.offset))) (select .cse0 (bvadd c_~A~0.offset (_ bv1 32)))) (select .cse0 c_~A~0.offset)))) c_~counter~0 (let ((.cse1 (select |c_#memory_int| c_~A~0.base)) (.cse2 (bvmul (_ bv4 32) |c_thread1Thread1of1ForFork1_~i~0#1|))) (concat (concat (concat (select .cse1 (bvadd .cse2 (_ bv3 32) c_~A~0.offset)) (select .cse1 (bvadd .cse2 (_ bv2 32) c_~A~0.offset))) (select .cse1 (bvadd .cse2 c_~A~0.offset (_ bv1 32)))) (select .cse1 (bvadd .cse2 c_~A~0.offset))))) (_ bv0 32))) is different from false [2022-11-19 06:42:20,141 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1704 (Array (_ BitVec 32) (_ BitVec 8)))) (= (_ bv0 32) (let ((.cse1 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse2 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse3 (bvadd c_~A~0.offset (_ bv1 32)))) (bvadd (bvneg (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1704) c_~A~0.base))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 c_~A~0.offset)))) c_~counter~0 (let ((.cse4 (select |c_#memory_int| c_~A~0.base))) (concat (concat (concat (select .cse4 .cse1) (select .cse4 .cse2)) (select .cse4 .cse3)) (select .cse4 c_~A~0.offset))))))) is different from false [2022-11-19 06:42:20,185 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1704 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1703 (Array (_ BitVec 32) (_ BitVec 8)))) (= (let ((.cse1 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv3 32))) (.cse2 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv2 32))) (.cse3 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv1 32))) (.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1703))) (bvadd (bvneg (let ((.cse0 (select (store .cse4 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1704) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) c_~counter~0 (let ((.cse5 (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse5 .cse1) (select .cse5 .cse2)) (select .cse5 .cse3)) (select .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) (_ bv0 32))) is different from false [2022-11-19 06:42:20,258 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:42:20,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 387 treesize of output 151 [2022-11-19 06:42:20,279 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:42:20,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 998 treesize of output 734 [2022-11-19 06:42:20,301 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:42:20,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 734 treesize of output 622 [2022-11-19 06:42:20,321 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:42:20,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 622 treesize of output 454 [2022-11-19 06:42:25,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-19 06:42:25,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [15649035] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:42:25,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546728112] [2022-11-19 06:42:25,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:42:25,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:42:25,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:42:25,274 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:42:25,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-11-19 06:42:25,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 06:42:25,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:42:25,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-19 06:42:25,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:42:25,563 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 26 treesize of output 24 [2022-11-19 06:42:25,840 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 38 treesize of output 34 [2022-11-19 06:42:25,931 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:42:25,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 46 [2022-11-19 06:42:26,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:42:26,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:42:26,328 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1731 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1731) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse0) c_~counter~0) (_ bv0 32)) (not (bvsge .cse0 (_ bv0 32)))))) (forall ((v_ArrVal_1731 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1731) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse5) c_~counter~0) (_ bv0 32)) (not (bvsle c_~counter~0 (bvadd (_ bv2147483647 32) .cse5)))))))) is different from false [2022-11-19 06:42:26,431 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1731 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1731) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse0) |c_thread1Thread1of1ForFork1_~tmp~0#1|) (_ bv0 32)) (not (bvsge .cse0 (_ bv0 32)))))) (forall ((v_ArrVal_1731 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1731) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd (_ bv2147483647 32) .cse5))) (= (bvadd (bvneg .cse5) |c_thread1Thread1of1ForFork1_~tmp~0#1|) (_ bv0 32))))))) is different from false [2022-11-19 06:42:26,734 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:42:26,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 146 [2022-11-19 06:42:26,757 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:42:26,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 54 [2022-11-19 06:42:31,277 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:42:31,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 310 treesize of output 166 [2022-11-19 06:42:31,307 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:42:31,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 74 [2022-11-19 06:42:53,784 WARN L233 SmtUtils]: Spent 9.46s on a formula simplification. DAG size of input: 541 DAG size of output: 28 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:42:54,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-19 06:42:54,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546728112] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:42:54,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:42:54,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10, 10, 9, 9] total 38 [2022-11-19 06:42:54,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414949862] [2022-11-19 06:42:54,317 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:42:54,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-19 06:42:54,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:42:54,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-19 06:42:54,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=743, Unknown=12, NotChecked=650, Total=1560 [2022-11-19 06:42:54,319 INFO L87 Difference]: Start difference. First operand 1473 states and 4020 transitions. Second operand has 40 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 39 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:43:02,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:43:02,447 INFO L93 Difference]: Finished difference Result 1575 states and 4253 transitions. [2022-11-19 06:43:02,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-19 06:43:02,449 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 39 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-19 06:43:02,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:43:02,452 INFO L225 Difference]: With dead ends: 1575 [2022-11-19 06:43:02,452 INFO L226 Difference]: Without dead ends: 1565 [2022-11-19 06:43:02,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 66 SyntacticMatches, 13 SemanticMatches, 44 ConstructedPredicates, 10 IntricatePredicates, 3 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 36.4s TimeCoverageRelationStatistics Valid=210, Invalid=1077, Unknown=13, NotChecked=770, Total=2070 [2022-11-19 06:43:02,453 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 35 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 455 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:43:02,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 58 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 455 Unchecked, 0.6s Time] [2022-11-19 06:43:02,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2022-11-19 06:43:02,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1473. [2022-11-19 06:43:02,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1473 states, 1468 states have (on average 2.7377384196185286) internal successors, (4019), 1472 states have internal predecessors, (4019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:43:02,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 4019 transitions. [2022-11-19 06:43:02,491 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 4019 transitions. Word has length 19 [2022-11-19 06:43:02,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:43:02,491 INFO L495 AbstractCegarLoop]: Abstraction has 1473 states and 4019 transitions. [2022-11-19 06:43:02,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 39 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:43:02,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 4019 transitions. [2022-11-19 06:43:02,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 06:43:02,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:43:02,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:43:02,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (64)] Forceful destruction successful, exit code 0 [2022-11-19 06:43:02,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-11-19 06:43:02,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (63)] Ended with exit code 0 [2022-11-19 06:43:03,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:43:03,102 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:43:03,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:43:03,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1000238813, now seen corresponding path program 4 times [2022-11-19 06:43:03,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:43:03,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020397841] [2022-11-19 06:43:03,103 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:43:03,103 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 06:43:03,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:43:03,105 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:43:03,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (66)] Waiting until timeout for monitored process [2022-11-19 06:43:03,376 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:43:03,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:43:03,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-19 06:43:03,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:43:03,407 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 39 treesize of output 37 [2022-11-19 06:43:03,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 06:43:03,784 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 38 treesize of output 34 [2022-11-19 06:43:03,979 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:43:03,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 46 [2022-11-19 06:43:04,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:43:04,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:43:04,910 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1759 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1759) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsle c_~counter~0 (bvadd (_ bv2147483647 32) .cse0))) (= (bvadd c_~counter~0 (bvneg .cse0)) (_ bv0 32))))) (forall ((v_ArrVal_1759 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1759) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsge .cse5 (_ bv0 32))) (= (bvadd c_~counter~0 (bvneg .cse5)) (_ bv0 32))))))) is different from false [2022-11-19 06:43:05,018 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1759 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1759) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd (_ bv2147483647 32) .cse0))) (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse0)) (_ bv0 32))))) (forall ((v_ArrVal_1759 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1759) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsge .cse5 (_ bv0 32))) (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse5)) (_ bv0 32))))))) is different from false [2022-11-19 06:43:05,124 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse8 (select |c_#memory_int| c_~A~0.base)) (.cse9 (bvmul (_ bv4 32) |c_thread1Thread1of1ForFork1_~i~0#1|))) (concat (concat (concat (select .cse8 (bvadd .cse9 (_ bv3 32) c_~A~0.offset)) (select .cse8 (bvadd .cse9 (_ bv2 32) c_~A~0.offset))) (select .cse8 (bvadd .cse9 c_~A~0.offset (_ bv1 32)))) (select .cse8 (bvadd .cse9 c_~A~0.offset))))) (.cse3 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse4 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse5 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1759 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse1 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1759) c_~A~0.base))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 c_~A~0.offset))))) (or (not (bvsle (bvadd c_~counter~0 .cse0) (bvadd (_ bv2147483647 32) .cse1))) (= (bvadd c_~counter~0 (bvneg .cse1) .cse0) (_ bv0 32))))) (forall ((v_ArrVal_1759 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1759) c_~A~0.base))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 c_~A~0.offset))))) (or (not (bvsge .cse6 (_ bv0 32))) (= (bvadd c_~counter~0 (bvneg .cse6) .cse0) (_ bv0 32))))))) is different from false [2022-11-19 06:43:05,213 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse4 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse5 (bvadd c_~A~0.offset (_ bv1 32)))) (let ((.cse1 (let ((.cse8 (select |c_#memory_int| c_~A~0.base))) (concat (concat (concat (select .cse8 .cse3) (select .cse8 .cse4)) (select .cse8 .cse5)) (select .cse8 c_~A~0.offset))))) (and (forall ((v_ArrVal_1759 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1759) c_~A~0.base))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 c_~A~0.offset))))) (or (not (bvsge .cse0 (_ bv0 32))) (= (bvadd c_~counter~0 (bvneg .cse0) .cse1) (_ bv0 32))))) (forall ((v_ArrVal_1759 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1759) c_~A~0.base))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 c_~A~0.offset))))) (or (not (bvsle (bvadd c_~counter~0 .cse1) (bvadd (_ bv2147483647 32) .cse6))) (= (bvadd c_~counter~0 (bvneg .cse6) .cse1) (_ bv0 32)))))))) is different from false [2022-11-19 06:43:05,328 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:43:05,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 996 treesize of output 732 [2022-11-19 06:43:05,368 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:43:05,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 732 treesize of output 620 [2022-11-19 06:43:05,403 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:43:05,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 620 treesize of output 452 [2022-11-19 06:43:06,933 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:43:06,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 628 treesize of output 474 [2022-11-19 06:43:06,953 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:43:06,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 474 treesize of output 390 [2022-11-19 06:43:06,972 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:43:06,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 390 treesize of output 292 [2022-11-19 06:43:09,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-19 06:43:09,849 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:43:09,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020397841] [2022-11-19 06:43:09,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020397841] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:43:09,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [376749121] [2022-11-19 06:43:09,850 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:43:09,850 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:43:09,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:43:09,851 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:43:09,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (67)] Waiting until timeout for monitored process [2022-11-19 06:43:10,362 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:43:10,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:43:10,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-19 06:43:10,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:43:11,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:43:11,205 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 38 treesize of output 34 [2022-11-19 06:43:11,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 18 [2022-11-19 06:43:11,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:43:11,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:43:12,097 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1784 (Array (_ BitVec 32) (_ BitVec 8)))) (= (bvadd c_~counter~0 (bvneg (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1784) c_~A~0.base))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) c_~A~0.offset)) (select .cse0 (bvadd (_ bv2 32) c_~A~0.offset))) (select .cse0 (bvadd c_~A~0.offset (_ bv1 32)))) (select .cse0 c_~A~0.offset))))) (_ bv0 32))) is different from false [2022-11-19 06:43:12,137 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1784 (Array (_ BitVec 32) (_ BitVec 8)))) (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1784) c_~A~0.base))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) c_~A~0.offset)) (select .cse0 (bvadd (_ bv2 32) c_~A~0.offset))) (select .cse0 (bvadd c_~A~0.offset (_ bv1 32)))) (select .cse0 c_~A~0.offset))))) (_ bv0 32))) is different from false [2022-11-19 06:43:12,426 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:43:12,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 154 treesize of output 102 [2022-11-19 06:43:12,454 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:43:12,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 23 [2022-11-19 06:43:16,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-19 06:43:16,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [376749121] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:43:16,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140318968] [2022-11-19 06:43:16,020 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:43:16,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:43:16,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:43:16,022 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:43:16,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-11-19 06:43:16,313 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:43:16,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:43:16,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-19 06:43:16,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:43:16,336 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 39 treesize of output 37 [2022-11-19 06:43:16,480 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 38 treesize of output 34 [2022-11-19 06:43:16,574 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:43:16,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 46 [2022-11-19 06:43:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:43:16,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:43:16,946 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1811 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1811) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsge .cse0 (_ bv0 32))) (= (bvadd (bvneg .cse0) c_~counter~0) (_ bv0 32))))) (forall ((v_ArrVal_1811 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1811) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse5) c_~counter~0) (_ bv0 32)) (not (bvsle c_~counter~0 (bvadd (_ bv2147483647 32) .cse5)))))))) is different from false [2022-11-19 06:43:17,049 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1811 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1811) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse0) |c_thread1Thread1of1ForFork1_~tmp~0#1|) (_ bv0 32)) (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd (_ bv2147483647 32) .cse0)))))) (forall ((v_ArrVal_1811 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1811) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsge .cse5 (_ bv0 32))) (= (bvadd (bvneg .cse5) |c_thread1Thread1of1ForFork1_~tmp~0#1|) (_ bv0 32))))))) is different from false [2022-11-19 06:43:17,373 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:43:17,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 310 treesize of output 166 [2022-11-19 06:43:17,401 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:43:17,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 74 [2022-11-19 06:43:21,556 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:43:21,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 146 [2022-11-19 06:43:21,582 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:43:21,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 54 [2022-11-19 06:43:32,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-19 06:43:32,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140318968] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:43:32,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:43:32,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 33 [2022-11-19 06:43:32,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252183710] [2022-11-19 06:43:32,181 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:43:32,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-19 06:43:32,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:43:32,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-19 06:43:32,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=594, Unknown=8, NotChecked=456, Total=1190 [2022-11-19 06:43:32,183 INFO L87 Difference]: Start difference. First operand 1473 states and 4019 transitions. Second operand has 35 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 34 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:43:36,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:43:36,700 INFO L93 Difference]: Finished difference Result 1577 states and 4253 transitions. [2022-11-19 06:43:36,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 06:43:36,702 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 34 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-19 06:43:36,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:43:36,705 INFO L225 Difference]: With dead ends: 1577 [2022-11-19 06:43:36,705 INFO L226 Difference]: Without dead ends: 1572 [2022-11-19 06:43:36,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 70 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 8 IntricatePredicates, 5 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=181, Invalid=898, Unknown=9, NotChecked=552, Total=1640 [2022-11-19 06:43:36,706 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 242 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:43:36,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 39 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 242 Unchecked, 0.7s Time] [2022-11-19 06:43:36,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2022-11-19 06:43:36,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1476. [2022-11-19 06:43:36,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1471 states have (on average 2.735554044867437) internal successors, (4024), 1475 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:43:36,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 4024 transitions. [2022-11-19 06:43:36,750 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 4024 transitions. Word has length 19 [2022-11-19 06:43:36,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:43:36,750 INFO L495 AbstractCegarLoop]: Abstraction has 1476 states and 4024 transitions. [2022-11-19 06:43:36,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 34 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:43:36,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 4024 transitions. [2022-11-19 06:43:36,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 06:43:36,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:43:36,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:43:36,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (67)] Forceful destruction successful, exit code 0 [2022-11-19 06:43:36,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-11-19 06:43:37,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (66)] Ended with exit code 0 [2022-11-19 06:43:37,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:43:37,361 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:43:37,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:43:37,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1038121433, now seen corresponding path program 5 times [2022-11-19 06:43:37,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:43:37,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668444963] [2022-11-19 06:43:37,362 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-19 06:43:37,362 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 06:43:37,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:43:37,363 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:43:37,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (69)] Waiting until timeout for monitored process [2022-11-19 06:43:37,649 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:43:37,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:43:37,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-19 06:43:37,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:43:37,670 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 42 treesize of output 38 [2022-11-19 06:43:38,030 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 38 treesize of output 34 [2022-11-19 06:43:38,240 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:43:38,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 46 [2022-11-19 06:43:38,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:43:38,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:43:39,145 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1838 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1838) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (= (bvadd c_~counter~0 (bvneg .cse0)) (_ bv0 32)) (not (bvsge .cse0 (_ bv0 32)))))) (forall ((v_ArrVal_1838 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1838) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (= (bvadd c_~counter~0 (bvneg .cse5)) (_ bv0 32)) (not (bvsle c_~counter~0 (bvadd (_ bv2147483647 32) .cse5)))))))) is different from false [2022-11-19 06:43:39,254 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1838 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1838) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (= (_ bv0 32) (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse0))) (not (bvsge .cse0 (_ bv0 32)))))) (forall ((v_ArrVal_1838 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1838) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (= (_ bv0 32) (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse5))) (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd (_ bv2147483647 32) .cse5)))))))) is different from false [2022-11-19 06:43:39,567 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:43:39,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 146 [2022-11-19 06:43:39,592 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:43:39,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 54 [2022-11-19 06:43:42,660 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:43:42,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 310 treesize of output 166 [2022-11-19 06:43:42,690 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:43:42,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 74 [2022-11-19 06:43:57,244 WARN L233 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 564 DAG size of output: 28 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:43:57,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-19 06:43:57,619 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:43:57,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668444963] [2022-11-19 06:43:57,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668444963] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:43:57,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1862398305] [2022-11-19 06:43:57,620 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-19 06:43:57,620 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:43:57,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:43:57,620 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:43:57,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (70)] Waiting until timeout for monitored process [2022-11-19 06:43:58,103 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:43:58,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:43:58,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-19 06:43:58,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:43:58,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:43:58,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:43:58,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:43:58,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-19 06:43:58,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 06:43:59,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:43:59,222 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 38 treesize of output 34 [2022-11-19 06:43:59,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 18 [2022-11-19 06:43:59,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:43:59,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:44:00,085 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1869 (Array (_ BitVec 32) (_ BitVec 8)))) (= (bvadd c_~counter~0 (bvneg (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1869) c_~A~0.base))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) c_~A~0.offset)) (select .cse0 (bvadd (_ bv2 32) c_~A~0.offset))) (select .cse0 (bvadd c_~A~0.offset (_ bv1 32)))) (select .cse0 c_~A~0.offset))))) (_ bv0 32))) is different from false [2022-11-19 06:44:00,123 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1869 (Array (_ BitVec 32) (_ BitVec 8)))) (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1869) c_~A~0.base))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) c_~A~0.offset)) (select .cse0 (bvadd (_ bv2 32) c_~A~0.offset))) (select .cse0 (bvadd c_~A~0.offset (_ bv1 32)))) (select .cse0 c_~A~0.offset))))) (_ bv0 32))) is different from false [2022-11-19 06:44:00,173 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1869 (Array (_ BitVec 32) (_ BitVec 8)))) (= (bvadd c_~counter~0 (bvneg (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1869) c_~A~0.base))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) c_~A~0.offset)) (select .cse0 (bvadd (_ bv2 32) c_~A~0.offset))) (select .cse0 (bvadd c_~A~0.offset (_ bv1 32)))) (select .cse0 c_~A~0.offset)))) (let ((.cse1 (select |c_#memory_int| c_~A~0.base)) (.cse2 (bvmul (_ bv4 32) |c_thread1Thread1of1ForFork1_~i~0#1|))) (concat (concat (concat (select .cse1 (bvadd .cse2 (_ bv3 32) c_~A~0.offset)) (select .cse1 (bvadd .cse2 (_ bv2 32) c_~A~0.offset))) (select .cse1 (bvadd .cse2 c_~A~0.offset (_ bv1 32)))) (select .cse1 (bvadd .cse2 c_~A~0.offset))))) (_ bv0 32))) is different from false [2022-11-19 06:44:00,214 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1869 (Array (_ BitVec 32) (_ BitVec 8)))) (= (let ((.cse1 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse2 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse3 (bvadd c_~A~0.offset (_ bv1 32)))) (bvadd c_~counter~0 (bvneg (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1869) c_~A~0.base))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 c_~A~0.offset)))) (let ((.cse4 (select |c_#memory_int| c_~A~0.base))) (concat (concat (concat (select .cse4 .cse1) (select .cse4 .cse2)) (select .cse4 .cse3)) (select .cse4 c_~A~0.offset))))) (_ bv0 32))) is different from false [2022-11-19 06:44:00,269 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1869 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1868 (Array (_ BitVec 32) (_ BitVec 8)))) (= (let ((.cse1 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv3 32))) (.cse2 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv2 32))) (.cse3 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv1 32))) (.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1868))) (bvadd c_~counter~0 (let ((.cse0 (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (bvneg (let ((.cse5 (select (store .cse4 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1869) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse5 .cse1) (select .cse5 .cse2)) (select .cse5 .cse3)) (select .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))))) (_ bv0 32))) is different from false [2022-11-19 06:44:00,379 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:44:00,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 387 treesize of output 151 [2022-11-19 06:44:00,402 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:44:00,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 998 treesize of output 734 [2022-11-19 06:44:00,427 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:44:00,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 734 treesize of output 622 [2022-11-19 06:44:00,451 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:44:00,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 622 treesize of output 454 [2022-11-19 06:44:09,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-19 06:44:09,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1862398305] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:44:09,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002543121] [2022-11-19 06:44:09,873 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-19 06:44:09,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:09,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:44:09,875 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:44:09,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-11-19 06:44:10,198 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:44:10,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:44:10,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-19 06:44:10,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:44:10,227 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 14 treesize of output 12 [2022-11-19 06:44:10,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:10,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:10,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:10,423 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 26 treesize of output 35 [2022-11-19 06:44:10,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 06:44:10,759 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 38 treesize of output 34 [2022-11-19 06:44:10,853 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:44:10,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 46 [2022-11-19 06:44:10,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:44:10,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:44:11,250 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1903 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1903) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsge .cse0 (_ bv0 32))) (= (bvadd c_~counter~0 (bvneg .cse0)) (_ bv0 32))))) (forall ((v_ArrVal_1903 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1903) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsle c_~counter~0 (bvadd (_ bv2147483647 32) .cse5))) (= (bvadd c_~counter~0 (bvneg .cse5)) (_ bv0 32))))))) is different from false [2022-11-19 06:44:11,354 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1903 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1903) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd (_ bv2147483647 32) .cse0))) (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse0)) (_ bv0 32))))) (forall ((v_ArrVal_1903 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1903) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsge .cse5 (_ bv0 32))) (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse5)) (_ bv0 32))))))) is different from false [2022-11-19 06:44:11,462 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (let ((.cse8 (select |c_#memory_int| c_~A~0.base)) (.cse9 (bvmul (_ bv4 32) |c_thread1Thread1of1ForFork1_~i~0#1|))) (concat (concat (concat (select .cse8 (bvadd .cse9 (_ bv3 32) c_~A~0.offset)) (select .cse8 (bvadd .cse9 (_ bv2 32) c_~A~0.offset))) (select .cse8 (bvadd .cse9 c_~A~0.offset (_ bv1 32)))) (select .cse8 (bvadd .cse9 c_~A~0.offset))))) (.cse3 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse4 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse5 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1903 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1903) c_~A~0.base))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 c_~A~0.offset))))) (or (not (bvsge .cse0 (_ bv0 32))) (= (bvadd c_~counter~0 .cse1 (bvneg .cse0)) (_ bv0 32))))) (forall ((v_ArrVal_1903 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1903) c_~A~0.base))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 c_~A~0.offset))))) (or (= (bvadd c_~counter~0 .cse1 (bvneg .cse6)) (_ bv0 32)) (not (bvsle (bvadd c_~counter~0 .cse1) (bvadd (_ bv2147483647 32) .cse6)))))))) is different from false [2022-11-19 06:44:11,553 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse4 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse5 (bvadd c_~A~0.offset (_ bv1 32)))) (let ((.cse0 (let ((.cse8 (select |c_#memory_int| c_~A~0.base))) (concat (concat (concat (select .cse8 .cse3) (select .cse8 .cse4)) (select .cse8 .cse5)) (select .cse8 c_~A~0.offset))))) (and (forall ((v_ArrVal_1903 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse1 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1903) c_~A~0.base))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 c_~A~0.offset))))) (or (not (bvsle (bvadd c_~counter~0 .cse0) (bvadd (_ bv2147483647 32) .cse1))) (= (bvadd c_~counter~0 .cse0 (bvneg .cse1)) (_ bv0 32))))) (forall ((v_ArrVal_1903 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1903) c_~A~0.base))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 c_~A~0.offset))))) (or (not (bvsge .cse6 (_ bv0 32))) (= (bvadd c_~counter~0 .cse0 (bvneg .cse6)) (_ bv0 32)))))))) is different from false [2022-11-19 06:44:11,730 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv3 32))) (.cse4 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv2 32))) (.cse5 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv1 32)))) (and (forall ((v_ArrVal_1903 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1902 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1902))) (let ((.cse1 (let ((.cse7 (select .cse6 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (.cse0 (let ((.cse2 (select (store .cse6 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1903) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) (or (= (bvadd c_~counter~0 (bvneg .cse0) .cse1) (_ bv0 32)) (not (bvsle (bvadd c_~counter~0 .cse1) (bvadd (_ bv2147483647 32) .cse0))))))) (forall ((v_ArrVal_1903 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1902 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1902))) (let ((.cse8 (let ((.cse11 (select (store .cse10 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1903) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse11 .cse3) (select .cse11 .cse4)) (select .cse11 .cse5)) (select .cse11 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) (or (= (bvadd c_~counter~0 (bvneg .cse8) (let ((.cse9 (select .cse10 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse9 .cse3) (select .cse9 .cse4)) (select .cse9 .cse5)) (select .cse9 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (_ bv0 32)) (not (bvsge .cse8 (_ bv0 32))))))))) is different from false [2022-11-19 06:44:11,845 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:44:11,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 588 treesize of output 207 [2022-11-19 06:44:11,873 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:44:11,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1276 treesize of output 968 [2022-11-19 06:44:11,901 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:44:11,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 968 treesize of output 800 [2022-11-19 06:44:11,926 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:44:11,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 800 treesize of output 604 [2022-11-19 06:44:18,381 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:44:18,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 776 treesize of output 251 [2022-11-19 06:44:18,424 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:44:18,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 996 treesize of output 732 [2022-11-19 06:44:18,452 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:44:18,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 732 treesize of output 620 [2022-11-19 06:44:18,481 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:44:18,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 620 treesize of output 452 [2022-11-19 06:44:28,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-19 06:44:28,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002543121] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:44:28,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:44:28,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10, 10, 10, 10] total 40 [2022-11-19 06:44:28,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424678951] [2022-11-19 06:44:28,552 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:44:28,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-19 06:44:28,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:44:28,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-19 06:44:28,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=743, Unknown=12, NotChecked=804, Total=1722 [2022-11-19 06:44:28,554 INFO L87 Difference]: Start difference. First operand 1476 states and 4024 transitions. Second operand has 42 states, 41 states have (on average 1.8780487804878048) internal successors, (77), 41 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:44:35,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:44:35,616 INFO L93 Difference]: Finished difference Result 1576 states and 4256 transitions. [2022-11-19 06:44:35,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-19 06:44:35,619 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.8780487804878048) internal successors, (77), 41 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-19 06:44:35,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:44:35,622 INFO L225 Difference]: With dead ends: 1576 [2022-11-19 06:44:35,622 INFO L226 Difference]: Without dead ends: 1571 [2022-11-19 06:44:35,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 64 SyntacticMatches, 13 SemanticMatches, 44 ConstructedPredicates, 12 IntricatePredicates, 4 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=192, Invalid=965, Unknown=13, NotChecked=900, Total=2070 [2022-11-19 06:44:35,623 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 17 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 353 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:44:35,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 41 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 134 Invalid, 0 Unknown, 353 Unchecked, 0.8s Time] [2022-11-19 06:44:35,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2022-11-19 06:44:35,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1475. [2022-11-19 06:44:35,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 1470 states have (on average 2.7360544217687073) internal successors, (4022), 1474 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:44:35,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 4022 transitions. [2022-11-19 06:44:35,652 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 4022 transitions. Word has length 19 [2022-11-19 06:44:35,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:44:35,653 INFO L495 AbstractCegarLoop]: Abstraction has 1475 states and 4022 transitions. [2022-11-19 06:44:35,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.8780487804878048) internal successors, (77), 41 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:44:35,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 4022 transitions. [2022-11-19 06:44:35,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 06:44:35,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:44:35,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:44:35,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (69)] Forceful destruction successful, exit code 0 [2022-11-19 06:44:35,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (70)] Ended with exit code 0 [2022-11-19 06:44:36,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-11-19 06:44:36,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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=3,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:36,273 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:44:36,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:44:36,273 INFO L85 PathProgramCache]: Analyzing trace with hash -290069423, now seen corresponding path program 6 times [2022-11-19 06:44:36,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:44:36,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036743535] [2022-11-19 06:44:36,274 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-19 06:44:36,274 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 06:44:36,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:44:36,275 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:44:36,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (72)] Waiting until timeout for monitored process [2022-11-19 06:44:36,543 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-19 06:44:36,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:44:36,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-19 06:44:36,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:44:36,564 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 26 treesize of output 24 [2022-11-19 06:44:36,936 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 38 treesize of output 34 [2022-11-19 06:44:37,169 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:44:37,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 46 [2022-11-19 06:44:37,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:44:37,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:44:38,165 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1930 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1930) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsge .cse0 (_ bv0 32))) (= (_ bv0 32) (bvadd c_~counter~0 (bvneg .cse0)))))) (forall ((v_ArrVal_1930 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1930) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsle c_~counter~0 (bvadd (_ bv2147483647 32) .cse5))) (= (_ bv0 32) (bvadd c_~counter~0 (bvneg .cse5)))))))) is different from false [2022-11-19 06:44:38,271 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1930 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1930) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd (_ bv2147483647 32) .cse0))) (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse0)) (_ bv0 32))))) (forall ((v_ArrVal_1930 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1930) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsge .cse5 (_ bv0 32))) (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse5)) (_ bv0 32))))))) is different from false [2022-11-19 06:44:38,624 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:44:38,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 310 treesize of output 166 [2022-11-19 06:44:38,652 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:44:38,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 74 [2022-11-19 06:44:43,770 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:44:43,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 146 [2022-11-19 06:44:43,795 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:44:43,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 54 [2022-11-19 06:44:55,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-19 06:44:55,526 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:44:55,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036743535] [2022-11-19 06:44:55,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2036743535] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:44:55,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1515162631] [2022-11-19 06:44:55,527 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-19 06:44:55,527 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:44:55,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:44:55,528 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:44:55,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (73)] Waiting until timeout for monitored process [2022-11-19 06:44:55,963 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-19 06:44:55,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:44:55,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-19 06:44:55,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:44:56,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:56,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:56,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:56,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-19 06:44:56,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 06:44:57,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:44:57,052 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 38 treesize of output 34 [2022-11-19 06:44:57,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 18 [2022-11-19 06:44:57,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:44:57,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:44:57,938 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1961 (Array (_ BitVec 32) (_ BitVec 8)))) (= (bvadd c_~counter~0 (bvneg (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1961) c_~A~0.base))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) c_~A~0.offset)) (select .cse0 (bvadd (_ bv2 32) c_~A~0.offset))) (select .cse0 (bvadd c_~A~0.offset (_ bv1 32)))) (select .cse0 c_~A~0.offset))))) (_ bv0 32))) is different from false [2022-11-19 06:44:58,239 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1961 (Array (_ BitVec 32) (_ BitVec 8)))) (= (bvadd c_~counter~0 (let ((.cse0 (select |c_#memory_int| c_~A~0.base)) (.cse1 (bvmul (_ bv4 32) |c_thread1Thread1of1ForFork1_~i~0#1|))) (concat (concat (concat (select .cse0 (bvadd .cse1 (_ bv3 32) c_~A~0.offset)) (select .cse0 (bvadd .cse1 (_ bv2 32) c_~A~0.offset))) (select .cse0 (bvadd .cse1 c_~A~0.offset (_ bv1 32)))) (select .cse0 (bvadd .cse1 c_~A~0.offset)))) (bvneg (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1961) c_~A~0.base))) (concat (concat (concat (select .cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (select .cse2 (bvadd (_ bv2 32) c_~A~0.offset))) (select .cse2 (bvadd c_~A~0.offset (_ bv1 32)))) (select .cse2 c_~A~0.offset))))) (_ bv0 32))) is different from false [2022-11-19 06:44:58,268 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1961 (Array (_ BitVec 32) (_ BitVec 8)))) (= (let ((.cse1 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse2 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse3 (bvadd c_~A~0.offset (_ bv1 32)))) (bvadd c_~counter~0 (bvneg (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1961) c_~A~0.base))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 c_~A~0.offset)))) (let ((.cse4 (select |c_#memory_int| c_~A~0.base))) (concat (concat (concat (select .cse4 .cse1) (select .cse4 .cse2)) (select .cse4 .cse3)) (select .cse4 c_~A~0.offset))))) (_ bv0 32))) is different from false [2022-11-19 06:44:58,314 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1961 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1960 (Array (_ BitVec 32) (_ BitVec 8)))) (= (let ((.cse1 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv3 32))) (.cse2 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv2 32))) (.cse3 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv1 32))) (.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1960))) (bvadd (bvneg (let ((.cse0 (select (store .cse4 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1961) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) c_~counter~0 (let ((.cse5 (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse5 .cse1) (select .cse5 .cse2)) (select .cse5 .cse3)) (select .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) (_ bv0 32))) is different from false [2022-11-19 06:44:58,405 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:44:58,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 387 treesize of output 151 [2022-11-19 06:44:58,424 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:44:58,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 494 treesize of output 362 [2022-11-19 06:44:58,442 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:44:58,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 362 treesize of output 278 [2022-11-19 06:44:58,459 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:44:58,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 278 treesize of output 222 [2022-11-19 06:45:03,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-19 06:45:03,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1515162631] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:45:03,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660330897] [2022-11-19 06:45:03,504 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-19 06:45:03,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:45:03,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:45:03,506 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:45:03,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-11-19 06:45:03,835 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-19 06:45:03,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:45:03,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-19 06:45:03,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:45:03,854 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 26 treesize of output 24 [2022-11-19 06:45:04,027 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 38 treesize of output 34 [2022-11-19 06:45:04,155 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:45:04,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 46 [2022-11-19 06:45:04,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:45:04,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:45:04,577 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1988 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1988) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsle c_~counter~0 (bvadd (_ bv2147483647 32) .cse0))) (= (bvadd c_~counter~0 (bvneg .cse0)) (_ bv0 32))))) (forall ((v_ArrVal_1988 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1988) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsge .cse5 (_ bv0 32))) (= (bvadd c_~counter~0 (bvneg .cse5)) (_ bv0 32))))))) is different from false [2022-11-19 06:45:04,687 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1988 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1988) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsge .cse0 (_ bv0 32))) (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse0)) (_ bv0 32))))) (forall ((v_ArrVal_1988 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1988) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd (_ bv2147483647 32) .cse5))) (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse5)) (_ bv0 32))))))) is different from false [2022-11-19 06:45:05,042 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:45:05,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 310 treesize of output 166 [2022-11-19 06:45:05,070 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:45:05,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 74 [2022-11-19 06:45:09,506 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:45:09,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 146 [2022-11-19 06:45:09,532 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:45:09,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 54 [2022-11-19 06:45:17,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-19 06:45:17,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660330897] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:45:17,242 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:45:17,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10, 10, 9, 9] total 35 [2022-11-19 06:45:17,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467627309] [2022-11-19 06:45:17,243 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:45:17,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-19 06:45:17,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:45:17,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-19 06:45:17,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=684, Unknown=17, NotChecked=488, Total=1332 [2022-11-19 06:45:17,245 INFO L87 Difference]: Start difference. First operand 1475 states and 4022 transitions. Second operand has 37 states, 36 states have (on average 2.0) internal successors, (72), 36 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:45:22,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:45:22,407 INFO L93 Difference]: Finished difference Result 1566 states and 4229 transitions. [2022-11-19 06:45:22,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-19 06:45:22,409 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.0) internal successors, (72), 36 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-19 06:45:22,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:45:22,412 INFO L225 Difference]: With dead ends: 1566 [2022-11-19 06:45:22,412 INFO L226 Difference]: Without dead ends: 1560 [2022-11-19 06:45:22,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 69 SyntacticMatches, 13 SemanticMatches, 39 ConstructedPredicates, 8 IntricatePredicates, 4 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=184, Invalid=887, Unknown=17, NotChecked=552, Total=1640 [2022-11-19 06:45:22,412 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 16 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 277 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:45:22,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 41 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 277 Unchecked, 0.5s Time] [2022-11-19 06:45:22,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2022-11-19 06:45:22,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1474. [2022-11-19 06:45:22,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1469 states have (on average 2.736555479918312) internal successors, (4020), 1473 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:45:22,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 4020 transitions. [2022-11-19 06:45:22,437 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 4020 transitions. Word has length 19 [2022-11-19 06:45:22,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:45:22,438 INFO L495 AbstractCegarLoop]: Abstraction has 1474 states and 4020 transitions. [2022-11-19 06:45:22,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.0) internal successors, (72), 36 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:45:22,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 4020 transitions. [2022-11-19 06:45:22,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 06:45:22,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:45:22,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:45:22,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-11-19 06:45:22,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (72)] Ended with exit code 0 [2022-11-19 06:45:22,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (73)] Forceful destruction successful, exit code 0 [2022-11-19 06:45:23,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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=3,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 06:45:23,049 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:45:23,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:45:23,049 INFO L85 PathProgramCache]: Analyzing trace with hash -298989113, now seen corresponding path program 7 times [2022-11-19 06:45:23,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:45:23,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700978808] [2022-11-19 06:45:23,050 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 06:45:23,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:45:23,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:45:23,051 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:45:23,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (75)] Waiting until timeout for monitored process [2022-11-19 06:45:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:45:23,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-19 06:45:23,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:45:23,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-19 06:45:23,782 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 38 treesize of output 34 [2022-11-19 06:45:24,012 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:45:24,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 46 [2022-11-19 06:45:24,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:45:24,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:45:24,957 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_2017 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2017) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse0) c_~counter~0) (_ bv0 32)) (not (bvsle c_~counter~0 (bvadd (_ bv2147483647 32) .cse0)))))) (forall ((v_ArrVal_2017 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2017) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsge .cse5 (_ bv0 32))) (= (bvadd (bvneg .cse5) c_~counter~0) (_ bv0 32))))))) is different from false [2022-11-19 06:45:25,071 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_2017 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2017) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse0) |c_thread1Thread1of1ForFork1_~tmp~0#1|) (_ bv0 32)) (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd (_ bv2147483647 32) .cse0)))))) (forall ((v_ArrVal_2017 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2017) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsge .cse5 (_ bv0 32))) (= (bvadd (bvneg .cse5) |c_thread1Thread1of1ForFork1_~tmp~0#1|) (_ bv0 32))))))) is different from false [2022-11-19 06:45:25,340 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:45:25,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 146 [2022-11-19 06:45:25,360 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:45:25,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 54 [2022-11-19 06:45:28,560 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:45:28,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 310 treesize of output 166 [2022-11-19 06:45:28,589 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:45:28,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 74 [2022-11-19 06:45:44,607 WARN L233 SmtUtils]: Spent 5.77s on a formula simplification. DAG size of input: 620 DAG size of output: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:45:44,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-19 06:45:44,922 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:45:44,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700978808] [2022-11-19 06:45:44,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700978808] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:45:44,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [72302185] [2022-11-19 06:45:44,923 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 06:45:44,923 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:45:44,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:45:44,924 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:45:44,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (76)] Waiting until timeout for monitored process [2022-11-19 06:45:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:45:45,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-19 06:45:45,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:45:46,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:45:46,321 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 38 treesize of output 34 [2022-11-19 06:45:46,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 18 [2022-11-19 06:45:46,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:45:46,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:45:47,213 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2042 (Array (_ BitVec 32) (_ BitVec 8)))) (= (bvadd (bvneg (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2042) c_~A~0.base))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) c_~A~0.offset)) (select .cse0 (bvadd (_ bv2 32) c_~A~0.offset))) (select .cse0 (bvadd c_~A~0.offset (_ bv1 32)))) (select .cse0 c_~A~0.offset)))) c_~counter~0) (_ bv0 32))) is different from false [2022-11-19 06:45:47,247 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2042 (Array (_ BitVec 32) (_ BitVec 8)))) (= (bvadd (bvneg (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2042) c_~A~0.base))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) c_~A~0.offset)) (select .cse0 (bvadd (_ bv2 32) c_~A~0.offset))) (select .cse0 (bvadd c_~A~0.offset (_ bv1 32)))) (select .cse0 c_~A~0.offset)))) |c_thread1Thread1of1ForFork1_~tmp~0#1|) (_ bv0 32))) is different from false [2022-11-19 06:45:47,551 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:45:47,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 154 treesize of output 102 [2022-11-19 06:45:47,574 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:45:47,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 23 [2022-11-19 06:45:49,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-19 06:45:49,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [72302185] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:45:49,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006173168] [2022-11-19 06:45:49,940 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 06:45:49,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:45:49,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:45:49,941 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:45:49,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-11-19 06:45:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:45:50,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-19 06:45:50,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:45:50,253 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 39 treesize of output 37 [2022-11-19 06:45:50,473 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 38 treesize of output 34 [2022-11-19 06:45:50,588 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:45:50,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 46 [2022-11-19 06:45:50,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:45:50,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:45:51,007 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_2069 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2069) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsle c_~counter~0 (bvadd (_ bv2147483647 32) .cse0))) (= (bvadd (bvneg .cse0) c_~counter~0) (_ bv0 32))))) (forall ((v_ArrVal_2069 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2069) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsge .cse5 (_ bv0 32))) (= (bvadd (bvneg .cse5) c_~counter~0) (_ bv0 32))))))) is different from false [2022-11-19 06:45:51,122 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_2069 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2069) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd (_ bv2147483647 32) .cse0))) (= (_ bv0 32) (bvadd (bvneg .cse0) |c_thread1Thread1of1ForFork1_~tmp~0#1|))))) (forall ((v_ArrVal_2069 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2069) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsge .cse5 (_ bv0 32))) (= (_ bv0 32) (bvadd (bvneg .cse5) |c_thread1Thread1of1ForFork1_~tmp~0#1|))))))) is different from false [2022-11-19 06:45:51,448 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:45:51,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 146 [2022-11-19 06:45:51,473 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:45:51,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 54 [2022-11-19 06:45:53,454 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:45:53,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 310 treesize of output 166 [2022-11-19 06:45:53,484 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:45:53,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 74 [2022-11-19 06:46:00,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-19 06:46:00,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006173168] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:46:00,101 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:46:00,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 31 [2022-11-19 06:46:00,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509411110] [2022-11-19 06:46:00,102 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:46:00,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-19 06:46:00,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:46:00,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-19 06:46:00,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=592, Unknown=6, NotChecked=330, Total=1056 [2022-11-19 06:46:00,103 INFO L87 Difference]: Start difference. First operand 1474 states and 4020 transitions. Second operand has 33 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:46:04,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:46:04,620 INFO L93 Difference]: Finished difference Result 1571 states and 4238 transitions. [2022-11-19 06:46:04,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 06:46:04,622 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-19 06:46:04,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:46:04,625 INFO L225 Difference]: With dead ends: 1571 [2022-11-19 06:46:04,625 INFO L226 Difference]: Without dead ends: 1563 [2022-11-19 06:46:04,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 73 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 6 IntricatePredicates, 3 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=168, Invalid=841, Unknown=7, NotChecked=390, Total=1406 [2022-11-19 06:46:04,626 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:46:04,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 44 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 160 Unchecked, 0.5s Time] [2022-11-19 06:46:04,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2022-11-19 06:46:04,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1472. [2022-11-19 06:46:04,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1467 states have (on average 2.738241308793456) internal successors, (4017), 1471 states have internal predecessors, (4017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:46:04,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 4017 transitions. [2022-11-19 06:46:04,656 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 4017 transitions. Word has length 19 [2022-11-19 06:46:04,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:46:04,656 INFO L495 AbstractCegarLoop]: Abstraction has 1472 states and 4017 transitions. [2022-11-19 06:46:04,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:46:04,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 4017 transitions. [2022-11-19 06:46:04,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 06:46:04,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:46:04,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:46:04,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (75)] Forceful destruction successful, exit code 0 [2022-11-19 06:46:04,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-11-19 06:46:05,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (76)] Ended with exit code 0 [2022-11-19 06:46:05,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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=3,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 06:46:05,276 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:46:05,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:46:05,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1212165831, now seen corresponding path program 8 times [2022-11-19 06:46:05,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:46:05,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821817288] [2022-11-19 06:46:05,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:46:05,277 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 06:46:05,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:46:05,278 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:46:05,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (78)] Waiting until timeout for monitored process [2022-11-19 06:46:05,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:46:05,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:46:05,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-19 06:46:05,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:46:05,581 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 26 treesize of output 24 [2022-11-19 06:46:05,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 06:46:05,983 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 38 treesize of output 34 [2022-11-19 06:46:06,190 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:46:06,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 46 [2022-11-19 06:46:06,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:46:06,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:46:07,192 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_2097 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2097) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (= (bvadd c_~counter~0 (bvneg .cse0)) (_ bv0 32)) (not (bvsle c_~counter~0 (bvadd .cse0 (_ bv2147483647 32))))))) (forall ((v_ArrVal_2097 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2097) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (= (bvadd c_~counter~0 (bvneg .cse5)) (_ bv0 32)) (not (bvsge .cse5 (_ bv0 32)))))))) is different from false [2022-11-19 06:46:07,298 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_2097 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2097) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (= (_ bv0 32) (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse0))) (not (bvsge .cse0 (_ bv0 32)))))) (forall ((v_ArrVal_2097 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2097) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd .cse5 (_ bv2147483647 32)))) (= (_ bv0 32) (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse5)))))))) is different from false [2022-11-19 06:46:07,420 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse8 (select |c_#memory_int| c_~A~0.base)) (.cse9 (bvmul (_ bv4 32) |c_thread1Thread1of1ForFork1_~i~0#1|))) (concat (concat (concat (select .cse8 (bvadd .cse9 (_ bv3 32) c_~A~0.offset)) (select .cse8 (bvadd .cse9 (_ bv2 32) c_~A~0.offset))) (select .cse8 (bvadd .cse9 c_~A~0.offset (_ bv1 32)))) (select .cse8 (bvadd .cse9 c_~A~0.offset))))) (.cse3 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse4 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse5 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_2097 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse1 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2097) c_~A~0.base))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 c_~A~0.offset))))) (or (not (bvsle (bvadd c_~counter~0 .cse0) (bvadd .cse1 (_ bv2147483647 32)))) (= (bvadd c_~counter~0 (bvneg .cse1) .cse0) (_ bv0 32))))) (forall ((v_ArrVal_2097 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2097) c_~A~0.base))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 c_~A~0.offset))))) (or (not (bvsge .cse6 (_ bv0 32))) (= (bvadd c_~counter~0 (bvneg .cse6) .cse0) (_ bv0 32))))))) is different from false [2022-11-19 06:46:07,509 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse4 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse5 (bvadd c_~A~0.offset (_ bv1 32)))) (let ((.cse1 (let ((.cse8 (select |c_#memory_int| c_~A~0.base))) (concat (concat (concat (select .cse8 .cse3) (select .cse8 .cse4)) (select .cse8 .cse5)) (select .cse8 c_~A~0.offset))))) (and (forall ((v_ArrVal_2097 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2097) c_~A~0.base))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 c_~A~0.offset))))) (or (= (bvadd c_~counter~0 (bvneg .cse0) .cse1) (_ bv0 32)) (not (bvsge .cse0 (_ bv0 32)))))) (forall ((v_ArrVal_2097 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2097) c_~A~0.base))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 c_~A~0.offset))))) (or (= (bvadd c_~counter~0 (bvneg .cse6) .cse1) (_ bv0 32)) (not (bvsle (bvadd c_~counter~0 .cse1) (bvadd .cse6 (_ bv2147483647 32)))))))))) is different from false [2022-11-19 06:46:07,607 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:46:07,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 996 treesize of output 732 [2022-11-19 06:46:07,633 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:46:07,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 732 treesize of output 620 [2022-11-19 06:46:07,661 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:46:07,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 620 treesize of output 452 [2022-11-19 06:46:12,029 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:46:12,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 628 treesize of output 474 [2022-11-19 06:46:12,050 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:46:12,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 474 treesize of output 390 [2022-11-19 06:46:12,070 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:46:12,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 390 treesize of output 292 [2022-11-19 06:46:15,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-19 06:46:15,542 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:46:15,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821817288] [2022-11-19 06:46:15,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821817288] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:46:15,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1377787968] [2022-11-19 06:46:15,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:46:15,543 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:46:15,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:46:15,544 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:46:15,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (79)] Waiting until timeout for monitored process [2022-11-19 06:46:16,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:46:16,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:46:16,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-19 06:46:16,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:46:16,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:46:16,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:46:16,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:46:16,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-19 06:46:16,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 06:46:17,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:46:17,080 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 38 treesize of output 34 [2022-11-19 06:46:17,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 18 [2022-11-19 06:46:17,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:46:17,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:46:18,243 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2128 (Array (_ BitVec 32) (_ BitVec 8)))) (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2128) c_~A~0.base))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) c_~A~0.offset)) (select .cse0 (bvadd (_ bv2 32) c_~A~0.offset))) (select .cse0 (bvadd c_~A~0.offset (_ bv1 32)))) (select .cse0 c_~A~0.offset))))) (_ bv0 32))) is different from false [2022-11-19 06:46:18,667 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2128 (Array (_ BitVec 32) (_ BitVec 8)))) (= (let ((.cse1 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse2 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse3 (bvadd c_~A~0.offset (_ bv1 32)))) (bvadd c_~counter~0 (let ((.cse0 (select |c_#memory_int| c_~A~0.base))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 c_~A~0.offset))) (bvneg (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2128) c_~A~0.base))) (concat (concat (concat (select .cse4 .cse1) (select .cse4 .cse2)) (select .cse4 .cse3)) (select .cse4 c_~A~0.offset)))))) (_ bv0 32))) is different from false [2022-11-19 06:46:18,712 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2128 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_2127 (Array (_ BitVec 32) (_ BitVec 8)))) (= (let ((.cse1 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv3 32))) (.cse2 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv2 32))) (.cse3 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv1 32))) (.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2127))) (bvadd (bvneg (let ((.cse0 (select (store .cse4 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2128) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) c_~counter~0 (let ((.cse5 (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse5 .cse1) (select .cse5 .cse2)) (select .cse5 .cse3)) (select .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) (_ bv0 32))) is different from false [2022-11-19 06:46:18,807 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:46:18,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 387 treesize of output 151 [2022-11-19 06:46:18,826 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:46:18,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 494 treesize of output 362 [2022-11-19 06:46:18,845 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:46:18,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 362 treesize of output 278 [2022-11-19 06:46:18,863 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:46:18,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 278 treesize of output 222 [2022-11-19 06:46:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-19 06:46:24,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1377787968] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:46:24,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337601621] [2022-11-19 06:46:24,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:46:24,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:46:24,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:46:24,164 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:46:24,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-11-19 06:46:24,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:46:24,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:46:24,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-19 06:46:24,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:46:24,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2022-11-19 06:46:24,674 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 38 treesize of output 34 [2022-11-19 06:46:24,755 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:46:24,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 46 [2022-11-19 06:46:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:46:24,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:46:25,135 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_2155 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2155) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsge .cse0 (_ bv0 32))) (= (bvadd (bvneg .cse0) c_~counter~0) (_ bv0 32))))) (forall ((v_ArrVal_2155 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2155) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsle c_~counter~0 (bvadd (_ bv2147483647 32) .cse5))) (= (bvadd (bvneg .cse5) c_~counter~0) (_ bv0 32))))))) is different from false [2022-11-19 06:46:25,247 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_2155 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2155) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd (_ bv2147483647 32) .cse0))) (= (_ bv0 32) (bvadd (bvneg .cse0) |c_thread1Thread1of1ForFork1_~tmp~0#1|))))) (forall ((v_ArrVal_2155 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2155) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsge .cse5 (_ bv0 32))) (= (_ bv0 32) (bvadd (bvneg .cse5) |c_thread1Thread1of1ForFork1_~tmp~0#1|))))))) is different from false [2022-11-19 06:46:25,590 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:46:25,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 146 [2022-11-19 06:46:25,615 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:46:25,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 54 [2022-11-19 06:46:29,642 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:46:29,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 310 treesize of output 166 [2022-11-19 06:46:29,671 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:46:29,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 74 [2022-11-19 06:46:47,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-19 06:46:47,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337601621] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:46:47,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:46:47,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10, 10, 9, 9] total 37 [2022-11-19 06:46:47,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593759065] [2022-11-19 06:46:47,287 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:46:47,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-19 06:46:47,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:46:47,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-19 06:46:47,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=733, Unknown=24, NotChecked=576, Total=1482 [2022-11-19 06:46:47,288 INFO L87 Difference]: Start difference. First operand 1472 states and 4017 transitions. Second operand has 39 states, 38 states have (on average 1.868421052631579) internal successors, (71), 38 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:46:51,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:46:51,189 INFO L93 Difference]: Finished difference Result 1560 states and 4222 transitions. [2022-11-19 06:46:51,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-19 06:46:51,191 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.868421052631579) internal successors, (71), 38 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-19 06:46:51,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:46:51,195 INFO L225 Difference]: With dead ends: 1560 [2022-11-19 06:46:51,195 INFO L226 Difference]: Without dead ends: 1552 [2022-11-19 06:46:51,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 67 SyntacticMatches, 14 SemanticMatches, 41 ConstructedPredicates, 9 IntricatePredicates, 4 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=180, Invalid=954, Unknown=24, NotChecked=648, Total=1806 [2022-11-19 06:46:51,195 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 292 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:46:51,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 44 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 292 Unchecked, 0.6s Time] [2022-11-19 06:46:51,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2022-11-19 06:46:51,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1472. [2022-11-19 06:46:51,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1467 states have (on average 2.7375596455351054) internal successors, (4016), 1471 states have internal predecessors, (4016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:46:51,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 4016 transitions. [2022-11-19 06:46:51,221 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 4016 transitions. Word has length 19 [2022-11-19 06:46:51,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:46:51,222 INFO L495 AbstractCegarLoop]: Abstraction has 1472 states and 4016 transitions. [2022-11-19 06:46:51,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.868421052631579) internal successors, (71), 38 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:46:51,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 4016 transitions. [2022-11-19 06:46:51,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 06:46:51,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:46:51,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:46:51,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-11-19 06:46:51,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (78)] Ended with exit code 0 [2022-11-19 06:46:51,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (79)] Forceful destruction successful, exit code 0 [2022-11-19 06:46:51,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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=3,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 06:46:51,834 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:46:51,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:46:51,834 INFO L85 PathProgramCache]: Analyzing trace with hash -339944095, now seen corresponding path program 9 times [2022-11-19 06:46:51,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:46:51,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279912691] [2022-11-19 06:46:51,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:46:51,834 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 06:46:51,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:46:51,835 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:46:51,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (81)] Waiting until timeout for monitored process [2022-11-19 06:46:52,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 06:46:52,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:46:52,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-19 06:46:52,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:46:52,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-19 06:46:52,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 06:46:52,469 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 38 treesize of output 34 [2022-11-19 06:46:52,646 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:46:52,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 46 [2022-11-19 06:46:52,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:46:52,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:46:53,557 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_2185 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2185) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsle c_~counter~0 (bvadd .cse0 (_ bv2147483647 32)))) (= (bvadd c_~counter~0 (bvneg .cse0)) (_ bv0 32))))) (forall ((v_ArrVal_2185 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2185) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsge .cse5 (_ bv0 32))) (= (bvadd c_~counter~0 (bvneg .cse5)) (_ bv0 32))))))) is different from false [2022-11-19 06:46:53,653 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_2185 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2185) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse0)) (_ bv0 32)) (not (bvsge .cse0 (_ bv0 32)))))) (forall ((v_ArrVal_2185 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2185) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd .cse5 (_ bv2147483647 32)))) (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse5)) (_ bv0 32))))))) is different from false [2022-11-19 06:46:53,746 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse8 (select |c_#memory_int| c_~A~0.base)) (.cse9 (bvmul (_ bv4 32) |c_thread1Thread1of1ForFork1_~i~0#1|))) (concat (concat (concat (select .cse8 (bvadd .cse9 (_ bv3 32) c_~A~0.offset)) (select .cse8 (bvadd .cse9 (_ bv2 32) c_~A~0.offset))) (select .cse8 (bvadd .cse9 c_~A~0.offset (_ bv1 32)))) (select .cse8 (bvadd .cse9 c_~A~0.offset))))) (.cse3 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse4 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse5 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_2185 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse1 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2185) c_~A~0.base))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 c_~A~0.offset))))) (or (= (_ bv0 32) (bvadd c_~counter~0 .cse0 (bvneg .cse1))) (not (bvsge .cse1 (_ bv0 32)))))) (forall ((v_ArrVal_2185 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2185) c_~A~0.base))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 c_~A~0.offset))))) (or (not (bvsle (bvadd c_~counter~0 .cse0) (bvadd .cse6 (_ bv2147483647 32)))) (= (_ bv0 32) (bvadd c_~counter~0 .cse0 (bvneg .cse6)))))))) is different from false [2022-11-19 06:46:53,826 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse4 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse5 (bvadd c_~A~0.offset (_ bv1 32)))) (let ((.cse0 (let ((.cse8 (select |c_#memory_int| c_~A~0.base))) (concat (concat (concat (select .cse8 .cse3) (select .cse8 .cse4)) (select .cse8 .cse5)) (select .cse8 c_~A~0.offset))))) (and (forall ((v_ArrVal_2185 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse1 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2185) c_~A~0.base))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 c_~A~0.offset))))) (or (not (bvsle (bvadd c_~counter~0 .cse0) (bvadd .cse1 (_ bv2147483647 32)))) (= (bvadd c_~counter~0 (bvneg .cse1) .cse0) (_ bv0 32))))) (forall ((v_ArrVal_2185 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2185) c_~A~0.base))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 c_~A~0.offset))))) (or (= (bvadd c_~counter~0 (bvneg .cse6) .cse0) (_ bv0 32)) (not (bvsge .cse6 (_ bv0 32))))))))) is different from false [2022-11-19 06:46:53,915 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:46:53,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 628 treesize of output 474 [2022-11-19 06:46:53,934 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:46:53,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 474 treesize of output 390 [2022-11-19 06:46:53,954 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:46:53,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 390 treesize of output 292 [2022-11-19 06:46:55,085 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:46:55,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 996 treesize of output 732 [2022-11-19 06:46:55,117 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:46:55,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 732 treesize of output 620 [2022-11-19 06:46:55,145 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:46:55,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 620 treesize of output 452 [2022-11-19 06:47:02,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-19 06:47:02,790 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:47:02,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279912691] [2022-11-19 06:47:02,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279912691] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:47:02,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [747545364] [2022-11-19 06:47:02,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:47:02,791 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:47:02,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:47:02,792 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:47:02,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (82)] Waiting until timeout for monitored process [2022-11-19 06:47:03,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 06:47:03,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:47:03,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-19 06:47:03,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:47:03,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:47:03,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:47:03,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:47:03,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-19 06:47:03,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 06:47:04,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:47:04,232 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 38 treesize of output 34 [2022-11-19 06:47:04,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 18 [2022-11-19 06:47:04,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:47:04,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:47:05,309 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2216 (Array (_ BitVec 32) (_ BitVec 8)))) (= (_ bv0 32) (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2216) c_~A~0.base))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) c_~A~0.offset)) (select .cse0 (bvadd (_ bv2 32) c_~A~0.offset))) (select .cse0 (bvadd c_~A~0.offset (_ bv1 32)))) (select .cse0 c_~A~0.offset))))))) is different from false [2022-11-19 06:47:05,707 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2216 (Array (_ BitVec 32) (_ BitVec 8)))) (= (let ((.cse1 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse2 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse3 (bvadd c_~A~0.offset (_ bv1 32)))) (bvadd c_~counter~0 (bvneg (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2216) c_~A~0.base))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 c_~A~0.offset)))) (let ((.cse4 (select |c_#memory_int| c_~A~0.base))) (concat (concat (concat (select .cse4 .cse1) (select .cse4 .cse2)) (select .cse4 .cse3)) (select .cse4 c_~A~0.offset))))) (_ bv0 32))) is different from false [2022-11-19 06:47:05,748 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2216 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_2215 (Array (_ BitVec 32) (_ BitVec 8)))) (= (let ((.cse1 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv3 32))) (.cse2 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv2 32))) (.cse3 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv1 32))) (.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2215))) (bvadd (let ((.cse0 (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) c_~counter~0 (bvneg (let ((.cse5 (select (store .cse4 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2216) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse5 .cse1) (select .cse5 .cse2)) (select .cse5 .cse3)) (select .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))))) (_ bv0 32))) is different from false [2022-11-19 06:47:05,817 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:47:05,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 387 treesize of output 151 [2022-11-19 06:47:05,840 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:47:05,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 494 treesize of output 362 [2022-11-19 06:47:05,858 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:47:05,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 362 treesize of output 306 [2022-11-19 06:47:05,874 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:47:05,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 306 treesize of output 222 [2022-11-19 06:47:08,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-19 06:47:08,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [747545364] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:47:08,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307075772] [2022-11-19 06:47:08,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:47:08,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:47:08,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:47:08,062 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:47:08,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-11-19 06:47:08,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 06:47:08,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:47:08,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-19 06:47:08,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:47:08,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-19 06:47:08,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:47:08,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:47:08,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:47:08,588 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 26 treesize of output 35 [2022-11-19 06:47:08,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 06:47:08,740 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 38 treesize of output 34 [2022-11-19 06:47:08,820 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:47:08,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 46 [2022-11-19 06:47:08,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:47:08,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:47:09,188 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_2249 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2249) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (= (bvadd c_~counter~0 (bvneg .cse0)) (_ bv0 32)) (not (bvsge .cse0 (_ bv0 32)))))) (forall ((v_ArrVal_2249 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2249) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (= (bvadd c_~counter~0 (bvneg .cse5)) (_ bv0 32)) (not (bvsle c_~counter~0 (bvadd (_ bv2147483647 32) .cse5)))))))) is different from false [2022-11-19 06:47:09,295 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_2249 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2249) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse0)) (_ bv0 32)) (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd (_ bv2147483647 32) .cse0)))))) (forall ((v_ArrVal_2249 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2249) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse5)) (_ bv0 32)) (not (bvsge .cse5 (_ bv0 32)))))))) is different from false [2022-11-19 06:47:09,390 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse8 (select |c_#memory_int| c_~A~0.base)) (.cse9 (bvmul (_ bv4 32) |c_thread1Thread1of1ForFork1_~i~0#1|))) (concat (concat (concat (select .cse8 (bvadd .cse9 (_ bv3 32) c_~A~0.offset)) (select .cse8 (bvadd .cse9 (_ bv2 32) c_~A~0.offset))) (select .cse8 (bvadd .cse9 c_~A~0.offset (_ bv1 32)))) (select .cse8 (bvadd .cse9 c_~A~0.offset))))) (.cse3 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse4 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse5 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_2249 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse1 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2249) c_~A~0.base))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 c_~A~0.offset))))) (or (not (bvsle (bvadd c_~counter~0 .cse0) (bvadd (_ bv2147483647 32) .cse1))) (= (bvadd c_~counter~0 .cse0 (bvneg .cse1)) (_ bv0 32))))) (forall ((v_ArrVal_2249 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2249) c_~A~0.base))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 c_~A~0.offset))))) (or (not (bvsge .cse6 (_ bv0 32))) (= (bvadd c_~counter~0 .cse0 (bvneg .cse6)) (_ bv0 32))))))) is different from false [2022-11-19 06:47:09,470 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse4 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse5 (bvadd c_~A~0.offset (_ bv1 32)))) (let ((.cse0 (let ((.cse8 (select |c_#memory_int| c_~A~0.base))) (concat (concat (concat (select .cse8 .cse3) (select .cse8 .cse4)) (select .cse8 .cse5)) (select .cse8 c_~A~0.offset))))) (and (forall ((v_ArrVal_2249 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse1 (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2249) c_~A~0.base))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 c_~A~0.offset))))) (or (not (bvsle (bvadd c_~counter~0 .cse0) (bvadd (_ bv2147483647 32) .cse1))) (= (bvadd c_~counter~0 .cse0 (bvneg .cse1)) (_ bv0 32))))) (forall ((v_ArrVal_2249 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2249) c_~A~0.base))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 c_~A~0.offset))))) (or (not (bvsge .cse6 (_ bv0 32))) (= (bvadd c_~counter~0 .cse0 (bvneg .cse6)) (_ bv0 32)))))))) is different from false [2022-11-19 06:47:09,613 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv3 32))) (.cse4 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv2 32))) (.cse5 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv1 32)))) (and (forall ((v_ArrVal_2249 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_2248 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2248))) (let ((.cse1 (let ((.cse7 (select .cse6 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse7 .cse3) (select .cse7 .cse4)) (select .cse7 .cse5)) (select .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (.cse0 (let ((.cse2 (select (store .cse6 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2249) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse2 .cse3) (select .cse2 .cse4)) (select .cse2 .cse5)) (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) (or (= (bvadd (bvneg .cse0) c_~counter~0 .cse1) (_ bv0 32)) (not (bvsle (bvadd c_~counter~0 .cse1) (bvadd (_ bv2147483647 32) .cse0))))))) (forall ((v_ArrVal_2249 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_2248 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2248))) (let ((.cse8 (let ((.cse11 (select (store .cse10 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2249) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse11 .cse3) (select .cse11 .cse4)) (select .cse11 .cse5)) (select .cse11 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) (or (not (bvsge .cse8 (_ bv0 32))) (= (bvadd (bvneg .cse8) c_~counter~0 (let ((.cse9 (select .cse10 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse9 .cse3) (select .cse9 .cse4)) (select .cse9 .cse5)) (select .cse9 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (_ bv0 32)))))))) is different from false [2022-11-19 06:47:09,709 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:47:09,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 588 treesize of output 207 [2022-11-19 06:47:09,741 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:47:09,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 628 treesize of output 474 [2022-11-19 06:47:09,760 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:47:09,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 474 treesize of output 390 [2022-11-19 06:47:09,777 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:47:09,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 390 treesize of output 292 [2022-11-19 06:47:10,968 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:47:10,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 776 treesize of output 251 [2022-11-19 06:47:10,995 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:47:10,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 996 treesize of output 732 [2022-11-19 06:47:11,020 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:47:11,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 732 treesize of output 620 [2022-11-19 06:47:11,046 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:47:11,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 620 treesize of output 452 [2022-11-19 06:47:13,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-19 06:47:13,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307075772] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:47:13,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:47:13,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10, 10, 10, 10] total 39 [2022-11-19 06:47:13,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388247230] [2022-11-19 06:47:13,575 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:47:13,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-19 06:47:13,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:47:13,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-19 06:47:13,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=692, Unknown=20, NotChecked=780, Total=1640 [2022-11-19 06:47:13,578 INFO L87 Difference]: Start difference. First operand 1472 states and 4016 transitions. Second operand has 41 states, 40 states have (on average 1.85) internal successors, (74), 40 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:47:23,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:47:23,784 INFO L93 Difference]: Finished difference Result 1562 states and 4221 transitions. [2022-11-19 06:47:23,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-19 06:47:23,786 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.85) internal successors, (74), 40 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-19 06:47:23,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:47:23,788 INFO L225 Difference]: With dead ends: 1562 [2022-11-19 06:47:23,788 INFO L226 Difference]: Without dead ends: 1553 [2022-11-19 06:47:23,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 65 SyntacticMatches, 12 SemanticMatches, 44 ConstructedPredicates, 12 IntricatePredicates, 5 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=184, Invalid=965, Unknown=21, NotChecked=900, Total=2070 [2022-11-19 06:47:23,789 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 17 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 372 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:47:23,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 42 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 372 Unchecked, 0.6s Time] [2022-11-19 06:47:23,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2022-11-19 06:47:23,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1470. [2022-11-19 06:47:23,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1465 states have (on average 2.7392491467576794) internal successors, (4013), 1469 states have internal predecessors, (4013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:47:23,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4013 transitions. [2022-11-19 06:47:23,831 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4013 transitions. Word has length 19 [2022-11-19 06:47:23,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:47:23,832 INFO L495 AbstractCegarLoop]: Abstraction has 1470 states and 4013 transitions. [2022-11-19 06:47:23,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.85) internal successors, (74), 40 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:47:23,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4013 transitions. [2022-11-19 06:47:23,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 06:47:23,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:47:23,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:47:23,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (81)] Forceful destruction successful, exit code 0 [2022-11-19 06:47:24,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (82)] Forceful destruction successful, exit code 0 [2022-11-19 06:47:24,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-11-19 06:47:24,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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=3,82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:47:24,448 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:47:24,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:47:24,448 INFO L85 PathProgramCache]: Analyzing trace with hash 686025961, now seen corresponding path program 10 times [2022-11-19 06:47:24,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:47:24,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809669970] [2022-11-19 06:47:24,449 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:47:24,449 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 06:47:24,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:47:24,449 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:47:24,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (84)] Waiting until timeout for monitored process [2022-11-19 06:47:24,713 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:47:24,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:47:24,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-19 06:47:24,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:47:24,729 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 39 treesize of output 37 [2022-11-19 06:47:25,091 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 38 treesize of output 34 [2022-11-19 06:47:25,334 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:47:25,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 46 [2022-11-19 06:47:25,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:47:25,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:47:26,612 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_2276 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2276) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse0) |c_thread1Thread1of1ForFork1_~tmp~0#1|) (_ bv0 32)) (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd (_ bv2147483647 32) .cse0)))))) (forall ((v_ArrVal_2276 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2276) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse5) |c_thread1Thread1of1ForFork1_~tmp~0#1|) (_ bv0 32)) (not (bvsge .cse5 (_ bv0 32)))))))) is different from false [2022-11-19 06:47:26,935 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:47:26,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 146 [2022-11-19 06:47:26,958 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:47:26,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 54 [2022-11-19 06:47:29,248 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:47:29,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 310 treesize of output 166 [2022-11-19 06:47:29,273 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:47:29,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 74 [2022-11-19 06:47:35,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:47:35,365 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:47:35,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [809669970] [2022-11-19 06:47:35,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [809669970] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:47:35,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [325036362] [2022-11-19 06:47:35,366 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:47:35,366 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:47:35,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:47:35,367 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:47:35,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (85)] Waiting until timeout for monitored process [2022-11-19 06:47:35,843 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:47:35,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:47:35,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-19 06:47:35,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:47:36,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:47:36,746 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 38 treesize of output 34 [2022-11-19 06:47:37,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 18 [2022-11-19 06:47:37,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:47:37,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:47:38,383 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:47:38,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 154 treesize of output 102 [2022-11-19 06:47:38,406 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:47:38,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 23 [2022-11-19 06:47:41,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:47:41,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [325036362] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:47:41,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006133494] [2022-11-19 06:47:41,009 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:47:41,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:47:41,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:47:41,011 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:47:41,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-11-19 06:47:41,286 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:47:41,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:47:41,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-19 06:47:41,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:47:41,300 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 42 treesize of output 38 [2022-11-19 06:47:41,461 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 38 treesize of output 34 [2022-11-19 06:47:41,523 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:47:41,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 46 [2022-11-19 06:47:41,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:47:41,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:47:41,850 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_2328 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2328) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (= (bvadd c_~counter~0 (bvneg .cse0)) (_ bv0 32)) (not (bvsge .cse0 (_ bv0 32)))))) (forall ((v_ArrVal_2328 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2328) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (= (bvadd c_~counter~0 (bvneg .cse5)) (_ bv0 32)) (not (bvsle c_~counter~0 (bvadd (_ bv2147483647 32) .cse5)))))))) is different from false [2022-11-19 06:47:41,959 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_2328 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2328) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsge .cse0 (_ bv0 32))) (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse0)) (_ bv0 32))))) (forall ((v_ArrVal_2328 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2328) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd (_ bv2147483647 32) .cse5))) (= (bvadd |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvneg .cse5)) (_ bv0 32))))))) is different from false [2022-11-19 06:47:42,293 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:47:42,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 310 treesize of output 166 [2022-11-19 06:47:42,320 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:47:42,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 74 [2022-11-19 06:47:46,140 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:47:46,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 146 [2022-11-19 06:47:46,161 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:47:46,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 54 [2022-11-19 06:47:51,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-19 06:47:51,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006133494] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:47:51,057 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:47:51,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 31 [2022-11-19 06:47:51,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690759047] [2022-11-19 06:47:51,057 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:47:51,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-19 06:47:51,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:47:51,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-19 06:47:51,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=728, Unknown=19, NotChecked=174, Total=1056 [2022-11-19 06:47:51,059 INFO L87 Difference]: Start difference. First operand 1470 states and 4013 transitions. Second operand has 33 states, 32 states have (on average 1.9375) internal successors, (62), 32 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:47:52,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:47:52,743 INFO L93 Difference]: Finished difference Result 1559 states and 4217 transitions. [2022-11-19 06:47:52,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 06:47:52,746 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.9375) internal successors, (62), 32 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-19 06:47:52,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:47:52,749 INFO L225 Difference]: With dead ends: 1559 [2022-11-19 06:47:52,749 INFO L226 Difference]: Without dead ends: 1545 [2022-11-19 06:47:52,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 73 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 3 IntricatePredicates, 3 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=156, Invalid=893, Unknown=19, NotChecked=192, Total=1260 [2022-11-19 06:47:52,749 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 182 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:47:52,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 37 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 182 Unchecked, 0.4s Time] [2022-11-19 06:47:52,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2022-11-19 06:47:52,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 1465. [2022-11-19 06:47:52,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1460 states have (on average 2.7445205479452053) internal successors, (4007), 1464 states have internal predecessors, (4007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:47:52,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 4007 transitions. [2022-11-19 06:47:52,774 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 4007 transitions. Word has length 19 [2022-11-19 06:47:52,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:47:52,774 INFO L495 AbstractCegarLoop]: Abstraction has 1465 states and 4007 transitions. [2022-11-19 06:47:52,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.9375) internal successors, (62), 32 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:47:52,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 4007 transitions. [2022-11-19 06:47:52,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 06:47:52,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:47:52,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:47:52,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-11-19 06:47:52,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (85)] Ended with exit code 0 [2022-11-19 06:47:53,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (84)] Ended with exit code 0 [2022-11-19 06:47:53,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:47:53,377 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-19 06:47:53,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:47:53,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1145623285, now seen corresponding path program 11 times [2022-11-19 06:47:53,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:47:53,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003704119] [2022-11-19 06:47:53,378 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-19 06:47:53,378 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 06:47:53,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:47:53,393 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 06:47:53,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8811f3ee-088c-410b-b3eb-fef06a6c1659/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 (87)] Waiting until timeout for monitored process [2022-11-19 06:47:53,694 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:47:53,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:47:53,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-19 06:47:53,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:47:53,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-19 06:47:54,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2022-11-19 06:47:54,358 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:47:54,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 46 [2022-11-19 06:47:54,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:47:54,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:47:55,325 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_2358 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2358) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse0) c_~counter~0) (_ bv0 32)) (not (bvsge .cse0 (_ bv0 32)))))) (forall ((v_ArrVal_2358 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2358) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse5) c_~counter~0) (_ bv0 32)) (not (bvsle c_~counter~0 (bvadd (_ bv2147483647 32) .cse5)))))))) is different from false [2022-11-19 06:47:55,386 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_2358 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2358) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd (_ bv2147483647 32) .cse0))) (= (bvadd (bvneg .cse0) |c_thread1Thread1of1ForFork1_~tmp~0#1|) (_ bv0 32))))) (forall ((v_ArrVal_2358 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2358) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (= (bvadd (bvneg .cse5) |c_thread1Thread1of1ForFork1_~tmp~0#1|) (_ bv0 32)) (not (bvsge .cse5 (_ bv0 32)))))))) is different from false [2022-11-19 06:47:55,709 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:47:55,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 310 treesize of output 166 [2022-11-19 06:47:55,735 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:47:55,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 74 [2022-11-19 06:48:00,669 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-19 06:48:00,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 146 [2022-11-19 06:48:00,692 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:48:00,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 54