./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --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 ee90c95792b81649f087e170ece38fbab8d5281ca8435570782565b7b775a87f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:05:45,353 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:05:45,412 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 18:05:45,416 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:05:45,417 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:05:45,437 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:05:45,438 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:05:45,438 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:05:45,439 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:05:45,440 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:05:45,440 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:05:45,441 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:05:45,441 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:05:45,442 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:05:45,442 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:05:45,443 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:05:45,443 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:05:45,444 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:05:45,444 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:05:45,445 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:05:45,446 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:05:45,448 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:05:45,449 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 18:05:45,450 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 18:05:45,450 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:05:45,451 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:05:45,451 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:05:45,451 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:05:45,452 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:05:45,452 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 18:05:45,452 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 18:05:45,453 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 18:05:45,453 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:05:45,453 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 18:05:45,454 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 18:05:45,454 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:05:45,454 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:05:45,454 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:05:45,454 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:05:45,454 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:05:45,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:05:45,455 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:05:45,455 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:05:45,455 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:05:45,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:05:45,456 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:05:45,456 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:05:45,456 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:05:45,456 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee90c95792b81649f087e170ece38fbab8d5281ca8435570782565b7b775a87f [2023-12-02 18:05:45,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:05:45,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:05:45,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:05:45,686 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:05:45,686 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:05:45,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-1.i [2023-12-02 18:05:48,432 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:05:48,695 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:05:48,696 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-1.i [2023-12-02 18:05:48,713 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/data/0774adb47/c612b3c59dbe4dc184d0d8beaa929dd6/FLAG604258456 [2023-12-02 18:05:48,728 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/data/0774adb47/c612b3c59dbe4dc184d0d8beaa929dd6 [2023-12-02 18:05:48,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:05:48,732 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:05:48,733 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:05:48,733 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:05:48,738 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:05:48,739 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:05:48" (1/1) ... [2023-12-02 18:05:48,740 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5beacd54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:48, skipping insertion in model container [2023-12-02 18:05:48,741 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:05:48" (1/1) ... [2023-12-02 18:05:48,804 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:05:49,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:05:49,277 ERROR L324 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) [2023-12-02 18:05:49,278 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1cb7498a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:49, skipping insertion in model container [2023-12-02 18:05:49,278 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:05:49,278 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 18:05:49,280 INFO L158 Benchmark]: Toolchain (without parser) took 547.75ms. Allocated memory is still 153.1MB. Free memory was 111.7MB in the beginning and 91.5MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 18:05:49,281 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 109.1MB. Free memory is still 56.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:05:49,281 INFO L158 Benchmark]: CACSL2BoogieTranslator took 545.38ms. Allocated memory is still 153.1MB. Free memory was 111.7MB in the beginning and 91.5MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 18:05:49,283 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 109.1MB. Free memory is still 56.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 545.38ms. Allocated memory is still 153.1MB. Free memory was 111.7MB in the beginning and 91.5MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 740]: 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_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --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 ee90c95792b81649f087e170ece38fbab8d5281ca8435570782565b7b775a87f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:05:51,042 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:05:51,106 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-12-02 18:05:51,111 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:05:51,112 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:05:51,139 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:05:51,140 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:05:51,140 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:05:51,141 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:05:51,141 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:05:51,142 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:05:51,142 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:05:51,143 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:05:51,143 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:05:51,144 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:05:51,144 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:05:51,145 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 18:05:51,145 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 18:05:51,146 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:05:51,146 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:05:51,147 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:05:51,148 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:05:51,148 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:05:51,148 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 18:05:51,149 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 18:05:51,149 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 18:05:51,150 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:05:51,150 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 18:05:51,150 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 18:05:51,151 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 18:05:51,151 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 18:05:51,152 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:05:51,152 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:05:51,152 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:05:51,153 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 18:05:51,153 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:05:51,153 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:05:51,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:05:51,154 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:05:51,154 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:05:51,154 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 18:05:51,154 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 18:05:51,154 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:05:51,155 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:05:51,155 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:05:51,155 INFO L153 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_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee90c95792b81649f087e170ece38fbab8d5281ca8435570782565b7b775a87f [2023-12-02 18:05:51,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:05:51,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:05:51,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:05:51,497 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:05:51,497 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:05:51,498 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-1.i [2023-12-02 18:05:54,317 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:05:54,604 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:05:54,604 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-1.i [2023-12-02 18:05:54,622 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/data/59ca9161e/25ba7adb131b4fd49a0c31bc539dd1d0/FLAG265564dca [2023-12-02 18:05:54,637 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/data/59ca9161e/25ba7adb131b4fd49a0c31bc539dd1d0 [2023-12-02 18:05:54,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:05:54,641 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:05:54,642 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:05:54,642 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:05:54,647 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:05:54,648 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:05:54" (1/1) ... [2023-12-02 18:05:54,649 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@331384bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:54, skipping insertion in model container [2023-12-02 18:05:54,649 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:05:54" (1/1) ... [2023-12-02 18:05:54,721 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:05:55,234 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:05:55,268 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 18:05:55,282 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:05:55,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:05:55,362 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:05:55,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:05:55,516 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:05:55,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:55 WrapperNode [2023-12-02 18:05:55,517 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:05:55,518 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:05:55,518 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:05:55,518 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:05:55,526 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:55" (1/1) ... [2023-12-02 18:05:55,563 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:55" (1/1) ... [2023-12-02 18:05:55,626 INFO L138 Inliner]: procedures = 180, calls = 340, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1135 [2023-12-02 18:05:55,627 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:05:55,628 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:05:55,628 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:05:55,628 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:05:55,640 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:55" (1/1) ... [2023-12-02 18:05:55,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:55" (1/1) ... [2023-12-02 18:05:55,651 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:55" (1/1) ... [2023-12-02 18:05:55,651 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:55" (1/1) ... [2023-12-02 18:05:55,708 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:55" (1/1) ... [2023-12-02 18:05:55,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:55" (1/1) ... [2023-12-02 18:05:55,724 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:55" (1/1) ... [2023-12-02 18:05:55,731 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:55" (1/1) ... [2023-12-02 18:05:55,742 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:05:55,742 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:05:55,743 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:05:55,743 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:05:55,744 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:55" (1/1) ... [2023-12-02 18:05:55,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:05:55,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:05:55,770 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:05:55,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:05:55,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 18:05:55,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 18:05:55,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 18:05:55,808 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 18:05:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 18:05:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:05:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 18:05:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 18:05:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 18:05:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 18:05:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 18:05:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 18:05:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:05:55,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:05:56,008 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:05:56,011 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:05:56,017 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 18:06:00,692 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:06:00,855 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:06:00,855 INFO L309 CfgBuilder]: Removed 60 assume(true) statements. [2023-12-02 18:06:00,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:06:00 BoogieIcfgContainer [2023-12-02 18:06:00,856 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:06:00,859 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:06:00,859 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:06:00,862 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:06:00,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:05:54" (1/3) ... [2023-12-02 18:06:00,863 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff66677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:06:00, skipping insertion in model container [2023-12-02 18:06:00,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:55" (2/3) ... [2023-12-02 18:06:00,864 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff66677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:06:00, skipping insertion in model container [2023-12-02 18:06:00,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:06:00" (3/3) ... [2023-12-02 18:06:00,865 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_nondet_test4-1.i [2023-12-02 18:06:00,878 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:06:00,879 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 648 error locations. [2023-12-02 18:06:00,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:06:00,938 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;@2b7b7e2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:06:00,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 648 error locations. [2023-12-02 18:06:00,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 1137 states, 487 states have (on average 2.564681724845996) internal successors, (1249), 1129 states have internal predecessors, (1249), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 18:06:00,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 18:06:00,950 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:06:00,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 18:06:00,951 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr647ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-12-02 18:06:00,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:06:00,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1818566, now seen corresponding path program 1 times [2023-12-02 18:06:00,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:06:00,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661188885] [2023-12-02 18:06:00,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:06:00,966 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 [2023-12-02 18:06:00,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:06:00,967 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:06:00,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:06:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:06:01,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:06:01,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:06:01,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:06:01,175 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:06:01,176 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:06:01,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661188885] [2023-12-02 18:06:01,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661188885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:06:01,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:06:01,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 18:06:01,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136370100] [2023-12-02 18:06:01,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:06:01,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:06:01,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:06:01,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:06:01,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:06:01,217 INFO L87 Difference]: Start difference. First operand has 1137 states, 487 states have (on average 2.564681724845996) internal successors, (1249), 1129 states have internal predecessors, (1249), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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) [2023-12-02 18:06:03,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:06:03,331 INFO L93 Difference]: Finished difference Result 1139 states and 1197 transitions. [2023-12-02 18:06:03,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:06:03,334 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 [2023-12-02 18:06:03,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:06:03,353 INFO L225 Difference]: With dead ends: 1139 [2023-12-02 18:06:03,353 INFO L226 Difference]: Without dead ends: 1136 [2023-12-02 18:06:03,355 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 [2023-12-02 18:06:03,359 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 24 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:06:03,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1575 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-02 18:06:03,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2023-12-02 18:06:03,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1127. [2023-12-02 18:06:03,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 488 states have (on average 2.4139344262295084) internal successors, (1178), 1119 states have internal predecessors, (1178), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 18:06:03,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1190 transitions. [2023-12-02 18:06:03,445 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1190 transitions. Word has length 3 [2023-12-02 18:06:03,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:06:03,445 INFO L495 AbstractCegarLoop]: Abstraction has 1127 states and 1190 transitions. [2023-12-02 18:06:03,445 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) [2023-12-02 18:06:03,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1190 transitions. [2023-12-02 18:06:03,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 18:06:03,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:06:03,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 18:06:03,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:06:03,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:06:03,647 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-12-02 18:06:03,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:06:03,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1745955341, now seen corresponding path program 1 times [2023-12-02 18:06:03,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:06:03,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573648086] [2023-12-02 18:06:03,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:06:03,648 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 [2023-12-02 18:06:03,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:06:03,649 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:06:03,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:06:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:06:03,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:06:03,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:06:03,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 18:06:03,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:06:03,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:06:03,838 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:06:03,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573648086] [2023-12-02 18:06:03,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573648086] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:06:03,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:06:03,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:06:03,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147586589] [2023-12-02 18:06:03,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:06:03,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:06:03,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:06:03,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:06:03,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:06:03,842 INFO L87 Difference]: Start difference. First operand 1127 states and 1190 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:06:05,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:06:05,973 INFO L93 Difference]: Finished difference Result 1157 states and 1231 transitions. [2023-12-02 18:06:05,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:06:05,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-02 18:06:05,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:06:05,979 INFO L225 Difference]: With dead ends: 1157 [2023-12-02 18:06:05,979 INFO L226 Difference]: Without dead ends: 1157 [2023-12-02 18:06:05,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:06:05,980 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1029 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:06:05,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 533 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 18:06:05,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2023-12-02 18:06:05,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1100. [2023-12-02 18:06:05,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 554 states have (on average 2.1805054151624548) internal successors, (1208), 1092 states have internal predecessors, (1208), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 18:06:06,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1220 transitions. [2023-12-02 18:06:06,004 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1220 transitions. Word has length 5 [2023-12-02 18:06:06,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:06:06,005 INFO L495 AbstractCegarLoop]: Abstraction has 1100 states and 1220 transitions. [2023-12-02 18:06:06,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:06:06,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1220 transitions. [2023-12-02 18:06:06,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 18:06:06,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:06:06,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 18:06:06,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 18:06:06,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:06:06,207 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-12-02 18:06:06,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:06:06,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1745955342, now seen corresponding path program 1 times [2023-12-02 18:06:06,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:06:06,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1520851180] [2023-12-02 18:06:06,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:06:06,208 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 [2023-12-02 18:06:06,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:06:06,209 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:06:06,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:06:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:06:06,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:06:06,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:06:06,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 18:06:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:06:06,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:06:06,315 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:06:06,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1520851180] [2023-12-02 18:06:06,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1520851180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:06:06,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:06:06,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:06:06,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247467868] [2023-12-02 18:06:06,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:06:06,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:06:06,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:06:06,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:06:06,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:06:06,317 INFO L87 Difference]: Start difference. First operand 1100 states and 1220 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:06:09,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:06:09,578 INFO L93 Difference]: Finished difference Result 1372 states and 1512 transitions. [2023-12-02 18:06:09,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:06:09,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-02 18:06:09,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:06:09,584 INFO L225 Difference]: With dead ends: 1372 [2023-12-02 18:06:09,584 INFO L226 Difference]: Without dead ends: 1372 [2023-12-02 18:06:09,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:06:09,585 INFO L413 NwaCegarLoop]: 771 mSDtfsCounter, 456 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:06:09,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1123 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-02 18:06:09,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2023-12-02 18:06:09,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1223. [2023-12-02 18:06:09,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 687 states have (on average 2.155749636098981) internal successors, (1481), 1215 states have internal predecessors, (1481), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 18:06:09,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1493 transitions. [2023-12-02 18:06:09,623 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1493 transitions. Word has length 5 [2023-12-02 18:06:09,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:06:09,623 INFO L495 AbstractCegarLoop]: Abstraction has 1223 states and 1493 transitions. [2023-12-02 18:06:09,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:06:09,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1493 transitions. [2023-12-02 18:06:09,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 18:06:09,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:06:09,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 18:06:09,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 18:06:09,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:06:09,824 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-12-02 18:06:09,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:06:09,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1708268006, now seen corresponding path program 1 times [2023-12-02 18:06:09,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:06:09,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802359480] [2023-12-02 18:06:09,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:06:09,826 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 [2023-12-02 18:06:09,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:06:09,827 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:06:09,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:06:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:06:09,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:06:09,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:06:09,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:06:09,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:06:09,979 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:06:09,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802359480] [2023-12-02 18:06:09,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1802359480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:06:09,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:06:09,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:06:09,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502283684] [2023-12-02 18:06:09,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:06:09,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:06:09,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:06:09,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:06:09,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:06:09,982 INFO L87 Difference]: Start difference. First operand 1223 states and 1493 transitions. Second operand has 4 states, 4 states have (on average 1.5) 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) [2023-12-02 18:06:12,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:06:12,180 INFO L93 Difference]: Finished difference Result 1979 states and 2434 transitions. [2023-12-02 18:06:12,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 18:06:12,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) 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 [2023-12-02 18:06:12,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:06:12,188 INFO L225 Difference]: With dead ends: 1979 [2023-12-02 18:06:12,188 INFO L226 Difference]: Without dead ends: 1977 [2023-12-02 18:06:12,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:06:12,189 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 699 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 2558 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:06:12,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 2558 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 18:06:12,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2023-12-02 18:06:12,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1667. [2023-12-02 18:06:12,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1131 states have (on average 2.1343943412908932) internal successors, (2414), 1656 states have internal predecessors, (2414), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 18:06:12,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2432 transitions. [2023-12-02 18:06:12,239 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2432 transitions. Word has length 6 [2023-12-02 18:06:12,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:06:12,239 INFO L495 AbstractCegarLoop]: Abstraction has 1667 states and 2432 transitions. [2023-12-02 18:06:12,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) 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) [2023-12-02 18:06:12,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2432 transitions. [2023-12-02 18:06:12,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 18:06:12,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:06:12,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:06:12,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:06:12,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:06:12,441 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-12-02 18:06:12,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:06:12,441 INFO L85 PathProgramCache]: Analyzing trace with hash -735995369, now seen corresponding path program 1 times [2023-12-02 18:06:12,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:06:12,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980869032] [2023-12-02 18:06:12,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:06:12,442 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:06:12,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:06:12,443 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:06:12,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:06:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:06:12,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:06:12,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:06:12,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:06:12,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:06:12,604 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:06:12,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980869032] [2023-12-02 18:06:12,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980869032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:06:12,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:06:12,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:06:12,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590854968] [2023-12-02 18:06:12,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:06:12,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:06:12,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:06:12,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:06:12,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:06:12,606 INFO L87 Difference]: Start difference. First operand 1667 states and 2432 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:06:13,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:06:13,511 INFO L93 Difference]: Finished difference Result 1613 states and 2352 transitions. [2023-12-02 18:06:13,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:06:13,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-02 18:06:13,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:06:13,520 INFO L225 Difference]: With dead ends: 1613 [2023-12-02 18:06:13,520 INFO L226 Difference]: Without dead ends: 1613 [2023-12-02 18:06:13,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:06:13,521 INFO L413 NwaCegarLoop]: 895 mSDtfsCounter, 70 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 18:06:13,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1741 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 18:06:13,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2023-12-02 18:06:13,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1613. [2023-12-02 18:06:13,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1101 states have (on average 2.119891008174387) internal successors, (2334), 1602 states have internal predecessors, (2334), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 18:06:13,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 2352 transitions. [2023-12-02 18:06:13,566 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 2352 transitions. Word has length 11 [2023-12-02 18:06:13,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:06:13,566 INFO L495 AbstractCegarLoop]: Abstraction has 1613 states and 2352 transitions. [2023-12-02 18:06:13,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:06:13,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 2352 transitions. [2023-12-02 18:06:13,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 18:06:13,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:06:13,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:06:13,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-02 18:06:13,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:06:13,771 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-12-02 18:06:13,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:06:13,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1378050225, now seen corresponding path program 1 times [2023-12-02 18:06:13,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:06:13,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922896881] [2023-12-02 18:06:13,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:06:13,772 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 [2023-12-02 18:06:13,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:06:13,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:06:13,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-02 18:06:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:06:13,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:06:13,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:06:13,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:06:13,896 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:06:13,897 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:06:13,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922896881] [2023-12-02 18:06:13,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922896881] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:06:13,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:06:13,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:06:13,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61992698] [2023-12-02 18:06:13,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:06:13,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:06:13,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:06:13,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:06:13,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:06:13,899 INFO L87 Difference]: Start difference. First operand 1613 states and 2352 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:06:15,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:06:15,206 INFO L93 Difference]: Finished difference Result 1599 states and 2310 transitions. [2023-12-02 18:06:15,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:06:15,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-02 18:06:15,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:06:15,214 INFO L225 Difference]: With dead ends: 1599 [2023-12-02 18:06:15,214 INFO L226 Difference]: Without dead ends: 1599 [2023-12-02 18:06:15,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:06:15,215 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 58 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:06:15,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2568 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 18:06:15,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2023-12-02 18:06:15,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1597. [2023-12-02 18:06:15,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1597 states, 1099 states have (on average 2.083712465878071) internal successors, (2290), 1586 states have internal predecessors, (2290), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 18:06:15,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 2308 transitions. [2023-12-02 18:06:15,255 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 2308 transitions. Word has length 13 [2023-12-02 18:06:15,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:06:15,255 INFO L495 AbstractCegarLoop]: Abstraction has 1597 states and 2308 transitions. [2023-12-02 18:06:15,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:06:15,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 2308 transitions. [2023-12-02 18:06:15,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-02 18:06:15,257 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:06:15,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:06:15,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-02 18:06:15,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:06:15,460 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-12-02 18:06:15,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:06:15,460 INFO L85 PathProgramCache]: Analyzing trace with hash 291695839, now seen corresponding path program 1 times [2023-12-02 18:06:15,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:06:15,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324619881] [2023-12-02 18:06:15,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:06:15,461 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 [2023-12-02 18:06:15,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:06:15,462 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:06:15,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:06:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:06:15,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:06:15,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:06:15,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 18:06:15,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:06:15,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:06:15,675 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:06:15,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324619881] [2023-12-02 18:06:15,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324619881] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:06:15,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:06:15,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:06:15,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470032640] [2023-12-02 18:06:15,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:06:15,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:06:15,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:06:15,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:06:15,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:06:15,678 INFO L87 Difference]: Start difference. First operand 1597 states and 2308 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:06:18,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:06:18,363 INFO L93 Difference]: Finished difference Result 1650 states and 2311 transitions. [2023-12-02 18:06:18,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:06:18,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-12-02 18:06:18,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:06:18,372 INFO L225 Difference]: With dead ends: 1650 [2023-12-02 18:06:18,372 INFO L226 Difference]: Without dead ends: 1650 [2023-12-02 18:06:18,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:06:18,373 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 964 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:06:18,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 853 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-02 18:06:18,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2023-12-02 18:06:18,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1593. [2023-12-02 18:06:18,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1593 states, 1099 states have (on average 2.0764331210191083) internal successors, (2282), 1582 states have internal predecessors, (2282), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 18:06:18,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2300 transitions. [2023-12-02 18:06:18,412 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2300 transitions. Word has length 27 [2023-12-02 18:06:18,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:06:18,413 INFO L495 AbstractCegarLoop]: Abstraction has 1593 states and 2300 transitions. [2023-12-02 18:06:18,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:06:18,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2300 transitions. [2023-12-02 18:06:18,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-02 18:06:18,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:06:18,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:06:18,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 18:06:18,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:06:18,615 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-12-02 18:06:18,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:06:18,615 INFO L85 PathProgramCache]: Analyzing trace with hash 291695840, now seen corresponding path program 1 times [2023-12-02 18:06:18,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:06:18,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745486299] [2023-12-02 18:06:18,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:06:18,616 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:06:18,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:06:18,617 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:06:18,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:06:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:06:18,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 18:06:18,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:06:18,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 18:06:18,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:06:18,917 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:06:18,918 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:06:18,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745486299] [2023-12-02 18:06:18,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745486299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:06:18,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:06:18,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:06:18,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091822879] [2023-12-02 18:06:18,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:06:18,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:06:18,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:06:18,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:06:18,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:06:18,920 INFO L87 Difference]: Start difference. First operand 1593 states and 2300 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:06:23,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:06:23,005 INFO L93 Difference]: Finished difference Result 1739 states and 2312 transitions. [2023-12-02 18:06:23,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:06:23,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-12-02 18:06:23,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:06:23,014 INFO L225 Difference]: With dead ends: 1739 [2023-12-02 18:06:23,014 INFO L226 Difference]: Without dead ends: 1739 [2023-12-02 18:06:23,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:06:23,015 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 393 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:06:23,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 1563 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-02 18:06:23,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2023-12-02 18:06:23,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1589. [2023-12-02 18:06:23,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1099 states have (on average 2.0691537761601455) internal successors, (2274), 1578 states have internal predecessors, (2274), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 18:06:23,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2292 transitions. [2023-12-02 18:06:23,052 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2292 transitions. Word has length 27 [2023-12-02 18:06:23,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:06:23,052 INFO L495 AbstractCegarLoop]: Abstraction has 1589 states and 2292 transitions. [2023-12-02 18:06:23,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:06:23,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2292 transitions. [2023-12-02 18:06:23,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-02 18:06:23,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:06:23,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:06:23,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:06:23,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:06:23,254 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-12-02 18:06:23,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:06:23,255 INFO L85 PathProgramCache]: Analyzing trace with hash 70830169, now seen corresponding path program 1 times [2023-12-02 18:06:23,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:06:23,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820076535] [2023-12-02 18:06:23,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:06:23,255 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 [2023-12-02 18:06:23,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:06:23,256 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:06:23,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-02 18:06:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:06:23,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:06:23,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:06:23,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:06:23,475 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:06:23,476 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:06:23,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820076535] [2023-12-02 18:06:23,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820076535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:06:23,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:06:23,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:06:23,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580800476] [2023-12-02 18:06:23,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:06:23,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:06:23,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:06:23,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:06:23,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:06:23,477 INFO L87 Difference]: Start difference. First operand 1589 states and 2292 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:06:24,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:06:24,519 INFO L93 Difference]: Finished difference Result 1577 states and 2272 transitions. [2023-12-02 18:06:24,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:06:24,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-02 18:06:24,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:06:24,527 INFO L225 Difference]: With dead ends: 1577 [2023-12-02 18:06:24,527 INFO L226 Difference]: Without dead ends: 1577 [2023-12-02 18:06:24,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:06:24,528 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 23 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2554 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:06:24,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2554 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 18:06:24,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2023-12-02 18:06:24,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1577. [2023-12-02 18:06:24,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 1087 states have (on average 2.0735970561177552) internal successors, (2254), 1566 states have internal predecessors, (2254), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 18:06:24,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2272 transitions. [2023-12-02 18:06:24,551 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2272 transitions. Word has length 43 [2023-12-02 18:06:24,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:06:24,552 INFO L495 AbstractCegarLoop]: Abstraction has 1577 states and 2272 transitions. [2023-12-02 18:06:24,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:06:24,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2272 transitions. [2023-12-02 18:06:24,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 18:06:24,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:06:24,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:06:24,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 18:06:24,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:06:24,755 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-12-02 18:06:24,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:06:24,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1391729543, now seen corresponding path program 1 times [2023-12-02 18:06:24,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:06:24,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850032580] [2023-12-02 18:06:24,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:06:24,756 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 [2023-12-02 18:06:24,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:06:24,757 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:06:24,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-02 18:06:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:06:24,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:06:24,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:06:25,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:06:25,191 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:06:25,191 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:06:25,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850032580] [2023-12-02 18:06:25,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850032580] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:06:25,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:06:25,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:06:25,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569146987] [2023-12-02 18:06:25,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:06:25,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:06:25,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:06:25,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:06:25,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:06:25,193 INFO L87 Difference]: Start difference. First operand 1577 states and 2272 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:06:26,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:06:26,114 INFO L93 Difference]: Finished difference Result 1469 states and 2048 transitions. [2023-12-02 18:06:26,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:06:26,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-12-02 18:06:26,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:06:26,123 INFO L225 Difference]: With dead ends: 1469 [2023-12-02 18:06:26,123 INFO L226 Difference]: Without dead ends: 1469 [2023-12-02 18:06:26,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:06:26,124 INFO L413 NwaCegarLoop]: 873 mSDtfsCounter, 59 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 18:06:26,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1667 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 18:06:26,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2023-12-02 18:06:26,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1469. [2023-12-02 18:06:26,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 979 states have (on average 2.073544433094995) internal successors, (2030), 1458 states have internal predecessors, (2030), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 18:06:26,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 2048 transitions. [2023-12-02 18:06:26,152 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 2048 transitions. Word has length 47 [2023-12-02 18:06:26,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:06:26,152 INFO L495 AbstractCegarLoop]: Abstraction has 1469 states and 2048 transitions. [2023-12-02 18:06:26,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:06:26,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 2048 transitions. [2023-12-02 18:06:26,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 18:06:26,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:06:26,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:06:26,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-02 18:06:26,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:06:26,359 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-12-02 18:06:26,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:06:26,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1802984030, now seen corresponding path program 1 times [2023-12-02 18:06:26,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:06:26,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296294510] [2023-12-02 18:06:26,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:06:26,360 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 [2023-12-02 18:06:26,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:06:26,361 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:06:26,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:06:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:06:26,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 18:06:26,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:06:26,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 18:06:26,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 18:06:27,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:06:27,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 18:06:27,141 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:06:27,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 18:06:27,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:06:27,160 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:06:27,160 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:06:27,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296294510] [2023-12-02 18:06:27,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296294510] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:06:27,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:06:27,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:06:27,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074308595] [2023-12-02 18:06:27,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:06:27,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:06:27,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:06:27,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:06:27,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:06:27,163 INFO L87 Difference]: Start difference. First operand 1469 states and 2048 transitions. Second operand has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:06:29,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:06:29,841 INFO L93 Difference]: Finished difference Result 1441 states and 1932 transitions. [2023-12-02 18:06:29,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:06:29,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2023-12-02 18:06:29,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:06:29,848 INFO L225 Difference]: With dead ends: 1441 [2023-12-02 18:06:29,849 INFO L226 Difference]: Without dead ends: 1441 [2023-12-02 18:06:29,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:06:29,849 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 943 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:06:29,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 290 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-02 18:06:29,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2023-12-02 18:06:29,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1252. [2023-12-02 18:06:29,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 846 states have (on average 1.9148936170212767) internal successors, (1620), 1241 states have internal predecessors, (1620), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 18:06:29,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1638 transitions. [2023-12-02 18:06:29,875 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1638 transitions. Word has length 50 [2023-12-02 18:06:29,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:06:29,876 INFO L495 AbstractCegarLoop]: Abstraction has 1252 states and 1638 transitions. [2023-12-02 18:06:29,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:06:29,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1638 transitions. [2023-12-02 18:06:29,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 18:06:29,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:06:29,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:06:29,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 18:06:30,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:06:30,080 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-12-02 18:06:30,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:06:30,081 INFO L85 PathProgramCache]: Analyzing trace with hash -2028466261, now seen corresponding path program 1 times [2023-12-02 18:06:30,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:06:30,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181621284] [2023-12-02 18:06:30,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:06:30,082 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 [2023-12-02 18:06:30,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:06:30,082 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:06:30,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:06:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:06:30,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 18:06:30,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:06:30,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 18:06:30,368 INFO L378 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 19 treesize of output 1 [2023-12-02 18:06:30,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-02 18:06:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:06:30,399 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:06:30,399 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:06:30,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181621284] [2023-12-02 18:06:30,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181621284] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:06:30,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:06:30,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:06:30,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244306964] [2023-12-02 18:06:30,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:06:30,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:06:30,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:06:30,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:06:30,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:06:30,402 INFO L87 Difference]: Start difference. First operand 1252 states and 1638 transitions. Second operand has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:06:33,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:06:33,488 INFO L93 Difference]: Finished difference Result 1251 states and 1636 transitions. [2023-12-02 18:06:33,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:06:33,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-12-02 18:06:33,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:06:33,496 INFO L225 Difference]: With dead ends: 1251 [2023-12-02 18:06:33,496 INFO L226 Difference]: Without dead ends: 1251 [2023-12-02 18:06:33,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:06:33,497 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 3 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1963 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:06:33,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1963 Invalid, 1641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1640 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-02 18:06:33,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2023-12-02 18:06:33,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1251. [2023-12-02 18:06:33,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 846 states have (on average 1.9125295508274232) internal successors, (1618), 1240 states have internal predecessors, (1618), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 18:06:33,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1636 transitions. [2023-12-02 18:06:33,522 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1636 transitions. Word has length 54 [2023-12-02 18:06:33,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:06:33,522 INFO L495 AbstractCegarLoop]: Abstraction has 1251 states and 1636 transitions. [2023-12-02 18:06:33,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:06:33,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1636 transitions. [2023-12-02 18:06:33,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 18:06:33,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:06:33,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:06:33,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-02 18:06:33,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:06:33,725 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-12-02 18:06:33,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:06:33,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2028466260, now seen corresponding path program 1 times [2023-12-02 18:06:33,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:06:33,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183983076] [2023-12-02 18:06:33,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:06:33,726 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 [2023-12-02 18:06:33,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:06:33,727 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:06:33,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:06:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:06:33,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 18:06:33,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:06:33,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 18:06:33,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 18:06:33,952 INFO L378 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 19 treesize of output 1 [2023-12-02 18:06:33,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-02 18:06:34,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:06:34,012 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:06:34,012 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:06:34,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183983076] [2023-12-02 18:06:34,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183983076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:06:34,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:06:34,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:06:34,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868345284] [2023-12-02 18:06:34,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:06:34,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:06:34,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:06:34,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:06:34,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:06:34,014 INFO L87 Difference]: Start difference. First operand 1251 states and 1636 transitions. Second operand has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:06:37,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:06:37,939 INFO L93 Difference]: Finished difference Result 1250 states and 1634 transitions. [2023-12-02 18:06:37,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:06:37,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-12-02 18:06:37,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:06:37,946 INFO L225 Difference]: With dead ends: 1250 [2023-12-02 18:06:37,946 INFO L226 Difference]: Without dead ends: 1250 [2023-12-02 18:06:37,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:06:37,947 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 1 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-02 18:06:37,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1986 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-02 18:06:37,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2023-12-02 18:06:37,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1250. [2023-12-02 18:06:37,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 844 states have (on average 1.914691943127962) internal successors, (1616), 1239 states have internal predecessors, (1616), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 18:06:37,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1634 transitions. [2023-12-02 18:06:37,967 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1634 transitions. Word has length 54 [2023-12-02 18:06:37,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:06:37,967 INFO L495 AbstractCegarLoop]: Abstraction has 1250 states and 1634 transitions. [2023-12-02 18:06:37,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:06:37,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1634 transitions. [2023-12-02 18:06:37,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 18:06:37,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:06:37,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:06:37,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 18:06:38,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:06:38,169 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-12-02 18:06:38,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:06:38,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1249065009, now seen corresponding path program 1 times [2023-12-02 18:06:38,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:06:38,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [128654621] [2023-12-02 18:06:38,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:06:38,170 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 [2023-12-02 18:06:38,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:06:38,170 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:06:38,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:06:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:06:38,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:06:38,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:06:38,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:06:38,411 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:06:38,412 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:06:38,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [128654621] [2023-12-02 18:06:38,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [128654621] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:06:38,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:06:38,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:06:38,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974466666] [2023-12-02 18:06:38,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:06:38,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:06:38,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:06:38,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:06:38,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:06:38,414 INFO L87 Difference]: Start difference. First operand 1250 states and 1634 transitions. Second operand has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:06:39,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:06:39,531 INFO L93 Difference]: Finished difference Result 1252 states and 1639 transitions. [2023-12-02 18:06:39,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:06:39,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2023-12-02 18:06:39,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:06:39,541 INFO L225 Difference]: With dead ends: 1252 [2023-12-02 18:06:39,541 INFO L226 Difference]: Without dead ends: 1252 [2023-12-02 18:06:39,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:06:39,542 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 1 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2349 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:06:39,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2349 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 18:06:39,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2023-12-02 18:06:39,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1252. [2023-12-02 18:06:39,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 845 states have (on average 1.9147928994082841) internal successors, (1618), 1241 states have internal predecessors, (1618), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-02 18:06:39,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1639 transitions. [2023-12-02 18:06:39,565 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1639 transitions. Word has length 60 [2023-12-02 18:06:39,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:06:39,565 INFO L495 AbstractCegarLoop]: Abstraction has 1252 states and 1639 transitions. [2023-12-02 18:06:39,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:06:39,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1639 transitions. [2023-12-02 18:06:39,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-02 18:06:39,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:06:39,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:06:39,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 18:06:39,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:06:39,767 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-12-02 18:06:39,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:06:39,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1386880438, now seen corresponding path program 1 times [2023-12-02 18:06:39,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:06:39,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185583505] [2023-12-02 18:06:39,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:06:39,768 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 [2023-12-02 18:06:39,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:06:39,768 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:06:39,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:06:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:06:39,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:06:39,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:06:40,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:06:40,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:06:40,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:06:40,080 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:06:40,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185583505] [2023-12-02 18:06:40,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185583505] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:06:40,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [119022677] [2023-12-02 18:06:40,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:06:40,080 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:06:40,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:06:40,081 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:06:40,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-02 18:06:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:06:40,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:06:40,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:06:40,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:06:40,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:06:40,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:06:40,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [119022677] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:06:40,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910024108] [2023-12-02 18:06:40,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:06:40,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:06:40,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:06:40,533 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:06:40,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 18:06:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:06:40,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:06:40,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:06:40,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:06:40,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:06:40,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:06:40,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910024108] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:06:40,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 18:06:40,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2023-12-02 18:06:40,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875757101] [2023-12-02 18:06:40,834 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 18:06:40,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 18:06:40,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:06:40,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 18:06:40,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:06:40,836 INFO L87 Difference]: Start difference. First operand 1252 states and 1639 transitions. Second operand has 8 states, 6 states have (on average 10.333333333333334) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:06:43,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:06:43,039 INFO L93 Difference]: Finished difference Result 1261 states and 1655 transitions. [2023-12-02 18:06:43,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 18:06:43,040 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 10.333333333333334) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 61 [2023-12-02 18:06:43,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:06:43,045 INFO L225 Difference]: With dead ends: 1261 [2023-12-02 18:06:43,045 INFO L226 Difference]: Without dead ends: 1261 [2023-12-02 18:06:43,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-12-02 18:06:43,046 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 6 mSDsluCounter, 4674 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5457 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:06:43,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5457 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 18:06:43,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2023-12-02 18:06:43,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1260. [2023-12-02 18:06:43,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 852 states have (on average 1.914319248826291) internal successors, (1631), 1248 states have internal predecessors, (1631), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-02 18:06:43,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1652 transitions. [2023-12-02 18:06:43,064 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1652 transitions. Word has length 61 [2023-12-02 18:06:43,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:06:43,064 INFO L495 AbstractCegarLoop]: Abstraction has 1260 states and 1652 transitions. [2023-12-02 18:06:43,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 10.333333333333334) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:06:43,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1652 transitions. [2023-12-02 18:06:43,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-02 18:06:43,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:06:43,065 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:06:43,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-02 18:06:43,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 18:06:43,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2023-12-02 18:06:43,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 18:06:43,666 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-12-02 18:06:43,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:06:43,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1121547889, now seen corresponding path program 2 times [2023-12-02 18:06:43,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:06:43,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146378034] [2023-12-02 18:06:43,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:06:43,667 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 [2023-12-02 18:06:43,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:06:43,668 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:06:43,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:06:44,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:06:44,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:06:44,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 18:06:44,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:06:44,068 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:06:44,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:06:44,217 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:06:44,217 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:06:44,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146378034] [2023-12-02 18:06:44,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146378034] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:06:44,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [667773281] [2023-12-02 18:06:44,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:06:44,218 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:06:44,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:06:44,219 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:06:44,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-02 18:06:45,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:06:45,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:06:45,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 18:06:45,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:06:45,243 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:06:45,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:06:45,288 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:06:45,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [667773281] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:06:45,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998498006] [2023-12-02 18:06:45,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:06:45,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:06:45,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:06:45,289 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:06:45,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 18:06:59,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:06:59,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:06:59,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 18:06:59,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:06:59,459 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:06:59,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 18:06:59,495 INFO L378 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 19 treesize of output 1 [2023-12-02 18:06:59,802 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:06:59,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 18:06:59,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-12-02 18:06:59,916 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 18:06:59,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:07:00,037 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2023-12-02 18:07:00,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2023-12-02 18:07:00,047 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1258 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem33#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_1258) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2023-12-02 18:07:00,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998498006] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:07:00,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2023-12-02 18:07:00,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 11] total 24 [2023-12-02 18:07:00,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932453120] [2023-12-02 18:07:00,051 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2023-12-02 18:07:00,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 18:07:00,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:07:00,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 18:07:00,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=513, Unknown=1, NotChecked=46, Total=650 [2023-12-02 18:07:00,054 INFO L87 Difference]: Start difference. First operand 1260 states and 1652 transitions. Second operand has 24 states, 21 states have (on average 5.714285714285714) internal successors, (120), 23 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 18:07:12,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:07:12,916 INFO L93 Difference]: Finished difference Result 1330 states and 1691 transitions. [2023-12-02 18:07:12,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-02 18:07:12,917 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 5.714285714285714) internal successors, (120), 23 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 64 [2023-12-02 18:07:12,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:07:12,922 INFO L225 Difference]: With dead ends: 1330 [2023-12-02 18:07:12,922 INFO L226 Difference]: Without dead ends: 1328 [2023-12-02 18:07:12,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=455, Invalid=2410, Unknown=1, NotChecked=104, Total=2970 [2023-12-02 18:07:12,923 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 865 mSDsluCounter, 4682 mSDsCounter, 0 mSdLazyCounter, 7106 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 5074 SdHoareTripleChecker+Invalid, 7160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 7106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:07:12,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 5074 Invalid, 7160 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 7106 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2023-12-02 18:07:12,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2023-12-02 18:07:12,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1268. [2023-12-02 18:07:12,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 861 states have (on average 1.9059233449477353) internal successors, (1641), 1256 states have internal predecessors, (1641), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-02 18:07:12,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1662 transitions. [2023-12-02 18:07:12,942 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1662 transitions. Word has length 64 [2023-12-02 18:07:12,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:07:12,943 INFO L495 AbstractCegarLoop]: Abstraction has 1268 states and 1662 transitions. [2023-12-02 18:07:12,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 5.714285714285714) internal successors, (120), 23 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 18:07:12,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1662 transitions. [2023-12-02 18:07:12,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 18:07:12,943 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:07:12,944 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:07:12,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:07:13,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2023-12-02 18:07:13,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 18:07:13,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:07:13,545 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-12-02 18:07:13,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:07:13,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1368999982, now seen corresponding path program 1 times [2023-12-02 18:07:13,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:07:13,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129521356] [2023-12-02 18:07:13,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:07:13,548 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 [2023-12-02 18:07:13,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:07:13,549 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:07:13,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:07:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:07:13,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 18:07:13,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:07:13,961 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:07:13,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:07:14,402 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:07:14,402 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:07:14,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129521356] [2023-12-02 18:07:14,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129521356] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:07:14,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1290733246] [2023-12-02 18:07:14,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:07:14,403 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:07:14,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:07:14,404 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:07:14,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-12-02 18:07:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:07:14,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 18:07:14,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:07:14,961 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:07:14,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:07:15,081 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:07:15,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1290733246] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:07:15,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435721379] [2023-12-02 18:07:15,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:07:15,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:07:15,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:07:15,082 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:07:15,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 18:07:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:07:15,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 18:07:15,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:07:15,479 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:07:15,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:07:16,278 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:07:16,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435721379] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:07:16,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 18:07:16,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 38 [2023-12-02 18:07:16,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039188254] [2023-12-02 18:07:16,279 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 18:07:16,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-02 18:07:16,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:07:16,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-02 18:07:16,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=959, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 18:07:16,282 INFO L87 Difference]: Start difference. First operand 1268 states and 1662 transitions. Second operand has 38 states, 35 states have (on average 2.657142857142857) internal successors, (93), 38 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 18:07:24,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:07:24,101 INFO L93 Difference]: Finished difference Result 1298 states and 1725 transitions. [2023-12-02 18:07:24,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-02 18:07:24,102 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 2.657142857142857) internal successors, (93), 38 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 70 [2023-12-02 18:07:24,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:07:24,109 INFO L225 Difference]: With dead ends: 1298 [2023-12-02 18:07:24,109 INFO L226 Difference]: Without dead ends: 1295 [2023-12-02 18:07:24,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1628, Invalid=3342, Unknown=0, NotChecked=0, Total=4970 [2023-12-02 18:07:24,112 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 24 mSDsluCounter, 10106 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 10886 SdHoareTripleChecker+Invalid, 2549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:07:24,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 10886 Invalid, 2549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-02 18:07:24,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2023-12-02 18:07:24,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1286. [2023-12-02 18:07:24,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 879 states have (on average 1.8930602957906713) internal successors, (1664), 1274 states have internal predecessors, (1664), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-02 18:07:24,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1685 transitions. [2023-12-02 18:07:24,135 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1685 transitions. Word has length 70 [2023-12-02 18:07:24,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:07:24,136 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 1685 transitions. [2023-12-02 18:07:24,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 2.657142857142857) internal successors, (93), 38 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 18:07:24,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1685 transitions. [2023-12-02 18:07:24,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 18:07:24,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:07:24,137 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:07:24,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2023-12-02 18:07:24,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-02 18:07:24,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-12-02 18:07:24,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:07:24,738 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-12-02 18:07:24,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:07:24,738 INFO L85 PathProgramCache]: Analyzing trace with hash -43277678, now seen corresponding path program 2 times [2023-12-02 18:07:24,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:07:24,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676742822] [2023-12-02 18:07:24,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:07:24,739 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 [2023-12-02 18:07:24,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:07:24,740 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:07:24,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 18:07:25,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:07:25,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:07:25,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-02 18:07:25,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:07:25,664 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:07:25,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:07:28,090 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:07:28,090 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:07:28,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676742822] [2023-12-02 18:07:28,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676742822] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:07:28,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2133851269] [2023-12-02 18:07:28,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:07:28,091 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:07:28,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:07:28,092 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:07:28,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2023-12-02 18:07:29,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:07:29,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:07:29,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-02 18:07:29,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:07:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:07:29,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:07:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:07:29,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2133851269] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:07:29,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240840351] [2023-12-02 18:07:29,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:07:29,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:07:29,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:07:29,984 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:07:29,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 18:07:41,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:07:41,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:07:41,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-02 18:07:41,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:07:42,006 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:07:42,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 18:07:42,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 18:07:42,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 18:07:42,129 INFO L378 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 19 treesize of output 1 [2023-12-02 18:07:42,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-02 18:07:42,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 18:07:43,015 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:07:43,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 18:07:43,027 INFO L378 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 30 treesize of output 13 [2023-12-02 18:07:43,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-12-02 18:07:43,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 18:07:43,339 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-02 18:07:43,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:07:44,401 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2457 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2457) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_2457 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2458 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2457) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2458) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 18:07:44,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240840351] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:07:44,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2023-12-02 18:07:44,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26, 26, 9] total 58 [2023-12-02 18:07:44,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933740385] [2023-12-02 18:07:44,408 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2023-12-02 18:07:44,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-02 18:07:44,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:07:44,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-02 18:07:44,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2844, Unknown=1, NotChecked=116, Total=3660 [2023-12-02 18:07:44,411 INFO L87 Difference]: Start difference. First operand 1286 states and 1685 transitions. Second operand has 58 states, 55 states have (on average 2.8363636363636364) internal successors, (156), 58 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 18:08:42,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:08:42,408 INFO L93 Difference]: Finished difference Result 1455 states and 1936 transitions. [2023-12-02 18:08:42,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2023-12-02 18:08:42,409 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 55 states have (on average 2.8363636363636364) internal successors, (156), 58 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 82 [2023-12-02 18:08:42,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:08:42,415 INFO L225 Difference]: With dead ends: 1455 [2023-12-02 18:08:42,415 INFO L226 Difference]: Without dead ends: 1446 [2023-12-02 18:08:42,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 351 SyntacticMatches, 1 SemanticMatches, 163 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7047 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=5889, Invalid=20846, Unknown=1, NotChecked=324, Total=27060 [2023-12-02 18:08:42,423 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 906 mSDsluCounter, 10503 mSDsCounter, 0 mSdLazyCounter, 20255 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 10895 SdHoareTripleChecker+Invalid, 20396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 20255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:08:42,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 10895 Invalid, 20396 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [141 Valid, 20255 Invalid, 0 Unknown, 0 Unchecked, 39.1s Time] [2023-12-02 18:08:42,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2023-12-02 18:08:42,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1370. [2023-12-02 18:08:42,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 963 states have (on average 1.8276220145379023) internal successors, (1760), 1357 states have internal predecessors, (1760), 9 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-02 18:08:42,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1781 transitions. [2023-12-02 18:08:42,453 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1781 transitions. Word has length 82 [2023-12-02 18:08:42,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:08:42,453 INFO L495 AbstractCegarLoop]: Abstraction has 1370 states and 1781 transitions. [2023-12-02 18:08:42,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 55 states have (on average 2.8363636363636364) internal successors, (156), 58 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 18:08:42,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1781 transitions. [2023-12-02 18:08:42,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-02 18:08:42,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:08:42,454 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:08:42,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2023-12-02 18:08:42,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-02 18:08:42,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-02 18:08:43,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:08:43,055 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-12-02 18:08:43,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:08:43,056 INFO L85 PathProgramCache]: Analyzing trace with hash 773579426, now seen corresponding path program 1 times [2023-12-02 18:08:43,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:08:43,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698960364] [2023-12-02 18:08:43,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:08:43,056 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 [2023-12-02 18:08:43,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:08:43,057 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:08:43,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-02 18:08:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:08:43,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-02 18:08:43,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:08:43,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 18:08:43,967 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 18:08:43,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 18:08:44,006 INFO L378 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 19 treesize of output 1 [2023-12-02 18:08:44,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-02 18:08:44,957 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:08:44,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 18:08:45,067 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:08:45,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 18:08:45,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-12-02 18:08:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:08:45,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:08:47,215 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2865 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2865) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2023-12-02 18:08:47,588 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2865 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2911 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2911))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2865)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 18:08:47,590 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:08:47,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698960364] [2023-12-02 18:08:47,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698960364] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:08:47,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1696770006] [2023-12-02 18:08:47,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:08:47,590 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:08:47,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:08:47,591 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:08:47,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-12-02 18:08:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:08:49,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-02 18:08:49,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:08:49,799 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-02 18:08:49,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-12-02 18:08:50,266 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2023-12-02 18:08:50,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2023-12-02 18:08:50,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 18:08:50,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-12-02 18:08:52,040 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:08:52,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-12-02 18:08:52,289 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:08:52,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-12-02 18:08:52,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-12-02 18:08:52,405 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:08:52,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:08:52,421 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3318 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_3318) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 18:08:54,913 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3318 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3364 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3364))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3318)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 18:08:54,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1696770006] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:08:54,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436074435] [2023-12-02 18:08:54,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:08:54,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:08:54,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:08:54,917 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:08:54,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 18:08:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:08:55,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-02 18:08:55,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:08:55,537 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:08:55,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 18:08:55,587 INFO L378 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 19 treesize of output 1 [2023-12-02 18:08:56,313 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:08:56,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 18:08:58,501 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:08:58,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 18:08:58,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-12-02 18:08:58,519 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:08:58,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:09:01,007 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2023-12-02 18:09:01,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2023-12-02 18:09:01,018 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3815 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2865 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem33#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3815))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2865)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2023-12-02 18:09:01,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436074435] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:09:01,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:09:01,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 27 [2023-12-02 18:09:01,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680767768] [2023-12-02 18:09:01,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:09:01,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 18:09:01,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:09:01,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 18:09:01,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=785, Unknown=12, NotChecked=310, Total=1260 [2023-12-02 18:09:01,023 INFO L87 Difference]: Start difference. First operand 1370 states and 1781 transitions. Second operand has 28 states, 24 states have (on average 5.875) internal successors, (141), 27 states have internal predecessors, (141), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 18:09:20,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:09:20,998 INFO L93 Difference]: Finished difference Result 2306 states and 2740 transitions. [2023-12-02 18:09:21,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 18:09:21,000 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 5.875) internal successors, (141), 27 states have internal predecessors, (141), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 106 [2023-12-02 18:09:21,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:09:21,007 INFO L225 Difference]: With dead ends: 2306 [2023-12-02 18:09:21,007 INFO L226 Difference]: Without dead ends: 2306 [2023-12-02 18:09:21,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 296 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=241, Invalid=1407, Unknown=12, NotChecked=410, Total=2070 [2023-12-02 18:09:21,008 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 1529 mSDsluCounter, 6034 mSDsCounter, 0 mSdLazyCounter, 9077 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 6553 SdHoareTripleChecker+Invalid, 9113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 9077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:09:21,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 6553 Invalid, 9113 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [36 Valid, 9077 Invalid, 0 Unknown, 0 Unchecked, 19.3s Time] [2023-12-02 18:09:21,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2023-12-02 18:09:21,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 1776. [2023-12-02 18:09:21,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1776 states, 1365 states have (on average 1.772161172161172) internal successors, (2419), 1756 states have internal predecessors, (2419), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2023-12-02 18:09:21,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 2454 transitions. [2023-12-02 18:09:21,037 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 2454 transitions. Word has length 106 [2023-12-02 18:09:21,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:09:21,037 INFO L495 AbstractCegarLoop]: Abstraction has 1776 states and 2454 transitions. [2023-12-02 18:09:21,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 5.875) internal successors, (141), 27 states have internal predecessors, (141), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 18:09:21,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 2454 transitions. [2023-12-02 18:09:21,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-02 18:09:21,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:09:21,038 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:09:21,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-02 18:09:21,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 18:09:21,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2023-12-02 18:09:21,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 18:09:21,639 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-12-02 18:09:21,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:09:21,640 INFO L85 PathProgramCache]: Analyzing trace with hash 773579427, now seen corresponding path program 1 times [2023-12-02 18:09:21,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:09:21,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678872392] [2023-12-02 18:09:21,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:21,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:09:21,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:09:21,641 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:09:21,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-02 18:09:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:09:22,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 111 conjunts are in the unsatisfiable core [2023-12-02 18:09:22,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:09:22,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 18:09:22,594 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:09:22,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 18:09:22,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 18:09:22,641 INFO L378 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 19 treesize of output 1 [2023-12-02 18:09:22,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 18:09:22,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-02 18:09:22,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 18:09:23,478 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:09:23,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 18:09:23,485 INFO L378 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 30 treesize of output 13 [2023-12-02 18:09:23,611 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:09:23,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 18:09:23,618 INFO L378 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 30 treesize of output 13 [2023-12-02 18:09:23,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-12-02 18:09:23,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 18:09:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:09:23,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:09:23,818 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4267 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4268 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4268) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4267) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_4268 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4268) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2023-12-02 18:09:23,851 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_4268 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_4268) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_4267 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4268 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_4268) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_4267) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-12-02 18:09:25,270 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4360 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4359 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4267 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4268 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4360))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4359) .cse0 v_ArrVal_4268) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_4267) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_4360 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4359 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4268 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4359) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4360) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4268) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv4 32)) (bvadd .cse3 (_ bv8 32))))))) is different from false [2023-12-02 18:09:25,280 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:09:25,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678872392] [2023-12-02 18:09:25,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678872392] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:09:25,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [963826174] [2023-12-02 18:09:25,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:09:25,281 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:09:25,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:09:25,282 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:09:25,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2023-12-02 18:11:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:11:22,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 113 conjunts are in the unsatisfiable core [2023-12-02 18:11:22,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:11:22,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 18:11:22,487 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:11:22,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 18:11:22,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 18:11:22,558 INFO L378 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 15 treesize of output 1 [2023-12-02 18:11:22,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 18:11:22,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-02 18:11:22,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 18:11:23,399 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:11:23,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 18:11:23,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 18:11:23,575 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:11:23,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 18:11:23,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 18:11:23,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-02 18:11:23,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 18:11:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:11:23,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:11:23,662 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4813 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4813) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_4813 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4812 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4813) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4812) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 18:11:23,696 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_4813 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4812 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_4813) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_4812) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_4813 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_4813) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2023-12-02 18:11:25,142 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4813 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4904 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4905 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4905))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4904) .cse0 v_ArrVal_4813) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_4812) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_4813 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4904 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4905 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4904) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4905) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4813) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3)))))) is different from false [2023-12-02 18:11:25,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [963826174] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:11:25,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056185006] [2023-12-02 18:11:25,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:11:25,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:11:25,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:11:25,153 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:11:25,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-02 18:11:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:11:25,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 111 conjunts are in the unsatisfiable core [2023-12-02 18:11:25,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:11:25,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 18:11:25,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 18:11:25,837 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:11:25,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 18:11:25,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 18:11:25,860 INFO L378 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 19 treesize of output 1 [2023-12-02 18:11:25,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-02 18:11:25,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 18:11:26,640 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:11:26,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 18:11:26,651 INFO L378 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 30 treesize of output 13 [2023-12-02 18:11:26,737 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:11:26,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 18:11:26,752 INFO L378 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 30 treesize of output 13 [2023-12-02 18:11:26,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-12-02 18:11:26,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 18:11:26,777 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:11:26,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:11:26,837 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5358 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5358) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_5357 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5358 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5358) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5357) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 18:11:26,875 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5358 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_5358) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5357 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5358 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_5358) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_5357) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-12-02 18:11:28,165 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5449 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5358 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5450 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5450) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5449) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5358) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_5449 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5357 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5358 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5450 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5449))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5450) .cse2 v_ArrVal_5358) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_5357) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-12-02 18:11:28,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056185006] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:11:28,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:11:28,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-12-02 18:11:28,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095528038] [2023-12-02 18:11:28,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:11:28,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 18:11:28,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:11:28,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 18:11:28,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=231, Unknown=9, NotChecked=342, Total=650 [2023-12-02 18:11:28,178 INFO L87 Difference]: Start difference. First operand 1776 states and 2454 transitions. Second operand has 15 states, 12 states have (on average 9.75) internal successors, (117), 15 states have internal predecessors, (117), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:11:49,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:11:49,158 INFO L93 Difference]: Finished difference Result 2129 states and 2774 transitions. [2023-12-02 18:11:49,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 18:11:49,159 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 9.75) internal successors, (117), 15 states have internal predecessors, (117), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 106 [2023-12-02 18:11:49,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:11:49,164 INFO L225 Difference]: With dead ends: 2129 [2023-12-02 18:11:49,164 INFO L226 Difference]: Without dead ends: 2129 [2023-12-02 18:11:49,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 304 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=111, Invalid=378, Unknown=9, NotChecked=432, Total=930 [2023-12-02 18:11:49,166 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1109 mSDsluCounter, 2430 mSDsCounter, 0 mSdLazyCounter, 8802 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 8821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 8802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:11:49,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 2871 Invalid, 8821 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 8802 Invalid, 0 Unknown, 0 Unchecked, 20.6s Time] [2023-12-02 18:11:49,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2023-12-02 18:11:49,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 1775. [2023-12-02 18:11:49,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1775 states, 1365 states have (on average 1.76996336996337) internal successors, (2416), 1755 states have internal predecessors, (2416), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2023-12-02 18:11:49,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 2451 transitions. [2023-12-02 18:11:49,196 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 2451 transitions. Word has length 106 [2023-12-02 18:11:49,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:11:49,197 INFO L495 AbstractCegarLoop]: Abstraction has 1775 states and 2451 transitions. [2023-12-02 18:11:49,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 9.75) internal successors, (117), 15 states have internal predecessors, (117), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:11:49,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 2451 transitions. [2023-12-02 18:11:49,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-02 18:11:49,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:11:49,198 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:11:49,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-02 18:11:49,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2023-12-02 18:11:49,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2023-12-02 18:11:49,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:11:49,799 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-12-02 18:11:49,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:11:49,799 INFO L85 PathProgramCache]: Analyzing trace with hash 382009965, now seen corresponding path program 1 times [2023-12-02 18:11:49,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:11:49,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793658407] [2023-12-02 18:11:49,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:11:49,800 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 [2023-12-02 18:11:49,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:11:49,801 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:11:49,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-02 18:11:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:11:50,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-02 18:11:50,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:11:50,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 18:11:50,913 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 18:11:50,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 18:11:50,953 INFO L378 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 19 treesize of output 1 [2023-12-02 18:11:51,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-02 18:11:52,024 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:11:52,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 18:11:52,156 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:11:52,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 18:11:52,252 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:11:52,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 18:11:52,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-12-02 18:11:52,311 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:11:52,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:11:54,437 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5873 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_5873) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2023-12-02 18:11:54,453 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5872 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5873 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5872))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5873)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 18:11:54,469 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5872 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5873 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5872))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5873)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 18:11:54,893 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5872 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5873 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5919 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5919))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5872)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5873)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 18:11:54,897 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:11:54,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793658407] [2023-12-02 18:11:54,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793658407] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:11:54,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1195601437] [2023-12-02 18:11:54,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:11:54,897 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:11:54,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:11:54,898 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:11:54,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2023-12-02 18:12:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:12:22,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-02 18:12:22,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:12:22,711 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-02 18:12:22,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-12-02 18:12:23,277 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2023-12-02 18:12:23,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2023-12-02 18:12:23,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 18:12:23,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-12-02 18:12:25,081 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:12:25,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-12-02 18:12:25,313 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:12:25,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-12-02 18:12:25,457 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:12:25,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-12-02 18:12:25,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-12-02 18:12:25,564 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:12:25,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:12:25,688 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5873 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6341 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6341))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5873)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 18:12:25,702 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5873 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6341 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6341))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5873)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 18:12:26,120 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5873 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6341 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6388 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6388))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6341)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5873)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 18:12:26,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1195601437] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:12:26,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202752400] [2023-12-02 18:12:26,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:12:26,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:12:26,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:12:26,124 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:12:26,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-02 18:12:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:12:26,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-02 18:12:26,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:12:26,869 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:12:26,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 18:12:26,920 INFO L378 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 19 treesize of output 1 [2023-12-02 18:12:27,383 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:12:27,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-12-02 18:12:27,481 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:12:27,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-12-02 18:12:27,578 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:12:27,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 18:12:27,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-12-02 18:12:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:12:27,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:12:27,694 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2023-12-02 18:12:27,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2023-12-02 18:12:27,702 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6809 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6809) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem36#1.base|)) is different from false [2023-12-02 18:12:27,711 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6809 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_6809) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2023-12-02 18:12:27,722 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6808 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6809 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6808)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6809) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1)))) is different from false [2023-12-02 18:12:27,735 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6808 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6809 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6808))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6809) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2023-12-02 18:12:28,140 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6855 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6808 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6809 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6855))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6808)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6809) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2023-12-02 18:12:28,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202752400] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:12:28,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:12:28,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 29 [2023-12-02 18:12:28,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847693613] [2023-12-02 18:12:28,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:12:28,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-02 18:12:28,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:12:28,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-02 18:12:28,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=846, Unknown=16, NotChecked=852, Total=1892 [2023-12-02 18:12:28,146 INFO L87 Difference]: Start difference. First operand 1775 states and 2451 transitions. Second operand has 30 states, 26 states have (on average 5.653846153846154) internal successors, (147), 30 states have internal predecessors, (147), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 18:12:47,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:12:47,066 INFO L93 Difference]: Finished difference Result 2302 states and 2734 transitions. [2023-12-02 18:12:47,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 18:12:47,068 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 5.653846153846154) internal successors, (147), 30 states have internal predecessors, (147), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 108 [2023-12-02 18:12:47,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:12:47,075 INFO L225 Difference]: With dead ends: 2302 [2023-12-02 18:12:47,075 INFO L226 Difference]: Without dead ends: 2302 [2023-12-02 18:12:47,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 300 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=225, Invalid=1139, Unknown=16, NotChecked=972, Total=2352 [2023-12-02 18:12:47,076 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 1922 mSDsluCounter, 5434 mSDsCounter, 0 mSdLazyCounter, 8255 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1936 SdHoareTripleChecker+Valid, 5953 SdHoareTripleChecker+Invalid, 8310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 8255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:12:47,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1936 Valid, 5953 Invalid, 8310 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 8255 Invalid, 0 Unknown, 0 Unchecked, 18.4s Time] [2023-12-02 18:12:47,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2023-12-02 18:12:47,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 1774. [2023-12-02 18:12:47,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1774 states, 1365 states have (on average 1.7677655677655677) internal successors, (2413), 1754 states have internal predecessors, (2413), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2023-12-02 18:12:47,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 2448 transitions. [2023-12-02 18:12:47,107 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 2448 transitions. Word has length 108 [2023-12-02 18:12:47,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:12:47,107 INFO L495 AbstractCegarLoop]: Abstraction has 1774 states and 2448 transitions. [2023-12-02 18:12:47,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 5.653846153846154) internal successors, (147), 30 states have internal predecessors, (147), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 18:12:47,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 2448 transitions. [2023-12-02 18:12:47,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-02 18:12:47,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:12:47,109 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:12:47,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2023-12-02 18:12:47,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2023-12-02 18:12:47,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-12-02 18:12:47,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:12:47,711 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-12-02 18:12:47,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:12:47,711 INFO L85 PathProgramCache]: Analyzing trace with hash 382009966, now seen corresponding path program 1 times [2023-12-02 18:12:47,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:12:47,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1133608809] [2023-12-02 18:12:47,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:12:47,712 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 [2023-12-02 18:12:47,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:12:47,713 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:12:47,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-02 18:12:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:12:48,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 115 conjunts are in the unsatisfiable core [2023-12-02 18:12:48,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:12:48,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 18:12:49,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 18:12:49,067 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:12:49,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 18:12:49,098 INFO L378 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 19 treesize of output 1 [2023-12-02 18:12:49,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 18:12:49,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-02 18:12:49,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 18:12:49,950 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:12:49,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 18:12:49,965 INFO L378 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 30 treesize of output 13 [2023-12-02 18:12:50,088 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:12:50,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 18:12:50,102 INFO L378 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 30 treesize of output 13 [2023-12-02 18:12:50,193 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:12:50,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 18:12:50,206 INFO L378 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 30 treesize of output 13 [2023-12-02 18:12:50,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-12-02 18:12:50,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 18:12:50,262 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:12:50,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:12:50,438 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7324 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7324) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_7324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7325 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7324) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7325) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 18:12:50,478 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7324 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_7324) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7325 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_7324) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_7325) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-12-02 18:12:50,533 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7322 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7323 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7322))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7323) .cse0 v_ArrVal_7324) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_7325) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_7324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7322 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7323 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7323) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7322) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7324) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd .cse3 (_ bv12 32))))))) is different from false [2023-12-02 18:12:50,573 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7322 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7323 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_7322))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_7323) .cse1 v_ArrVal_7324) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7325) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_7324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7322 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7323 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_7323) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_7322) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7324) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd .cse4 (_ bv12 32)))))))) is different from false [2023-12-02 18:12:53,045 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7416 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7417 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7322 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7323 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7417))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_7322))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7416) .cse0 v_ArrVal_7323) .cse1 v_ArrVal_7324) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7325) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_7416 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7417 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7322 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7323 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7417))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7416) .cse6 v_ArrVal_7323) (select (select (store .cse7 .cse6 v_ArrVal_7322) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7324))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse5) (bvadd .cse5 (_ bv12 32))))))) is different from false [2023-12-02 18:12:53,063 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:12:53,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1133608809] [2023-12-02 18:12:53,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1133608809] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:12:53,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [19577903] [2023-12-02 18:12:53,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:12:53,064 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:12:53,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:12:53,065 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:12:53,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2023-12-02 18:14:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:01,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 117 conjunts are in the unsatisfiable core [2023-12-02 18:14:01,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:14:01,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 18:14:01,693 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:14:01,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 18:14:01,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 18:14:01,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 18:14:01,835 INFO L378 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 15 treesize of output 1 [2023-12-02 18:14:02,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-02 18:14:02,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 18:14:03,208 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:14:03,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 18:14:03,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 18:14:03,500 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:14:03,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 18:14:03,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 18:14:03,702 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:14:03,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 18:14:03,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 18:14:03,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-02 18:14:03,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 18:14:03,758 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:14:03,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:14:03,837 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7887 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7886 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7887) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7886) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_7887 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7887) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd .cse1 (_ bv12 32))))))) is different from false [2023-12-02 18:14:03,894 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_7887 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7886 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_7887) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_7886) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_7887 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_7887) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd .cse2 (_ bv12 32)))))))) is different from false [2023-12-02 18:14:03,948 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7887 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7886 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7885 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7884 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7885))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7884) .cse0 v_ArrVal_7887) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_7886) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_7887 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7885 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7884 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7884) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7885) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7887) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd .cse3 (_ bv12 32))))))) is different from false [2023-12-02 18:14:04,018 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7887 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7886 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7885 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7884 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_7885))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_7884) .cse1 v_ArrVal_7887) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7886) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_7887 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7885 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7884 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_7884) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_7885) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7887) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd .cse4 (_ bv12 32)))))))) is different from false [2023-12-02 18:14:06,280 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7979 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7978 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7887 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7886 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7885 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7884 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7978))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_7885))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7979) .cse0 v_ArrVal_7884) .cse1 v_ArrVal_7887) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7886) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_7979 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7978 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7887 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7885 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7884 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7978))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7979) .cse6 v_ArrVal_7884) (select (select (store .cse7 .cse6 v_ArrVal_7885) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7887))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse5 (_ bv8 32)) (bvadd .cse5 (_ bv12 32))))))) is different from false [2023-12-02 18:14:06,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [19577903] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:14:06,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886016932] [2023-12-02 18:14:06,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:06,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:14:06,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:14:06,300 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:14:06,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-02 18:14:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:06,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 114 conjunts are in the unsatisfiable core [2023-12-02 18:14:06,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:14:06,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 18:14:07,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 18:14:07,253 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:14:07,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 18:14:07,283 INFO L378 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 19 treesize of output 1 [2023-12-02 18:14:07,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 18:14:07,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-02 18:14:07,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 18:14:08,504 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:14:08,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 18:14:08,526 INFO L378 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 30 treesize of output 13 [2023-12-02 18:14:08,648 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:14:08,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 18:14:08,670 INFO L378 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 30 treesize of output 13 [2023-12-02 18:14:08,746 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:14:08,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 18:14:08,768 INFO L378 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 30 treesize of output 13 [2023-12-02 18:14:08,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-12-02 18:14:08,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 18:14:08,806 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:14:08,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:14:08,883 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8449 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8449) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8449 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8448 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8449) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8448) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 18:14:08,926 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8449 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_8449) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8449 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8448 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_8449) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_8448) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-12-02 18:14:09,003 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8449 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8447 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8446 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8446) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8447) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8449) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_8449 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8448 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8447 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8446 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8447))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8446) .cse2 v_ArrVal_8449) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_8448) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-12-02 18:14:09,064 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8449 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8448 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8447 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8446 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_8447))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_8446) .cse1 v_ArrVal_8449) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8448) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_8449 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8447 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8446 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_8446) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_8447) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8449) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd .cse4 (_ bv12 32)))))))) is different from false [2023-12-02 18:14:10,808 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8540 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8449 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8447 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8446 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8541 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8540))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8541) .cse1 v_ArrVal_8446) (select (select (store .cse2 .cse1 v_ArrVal_8447) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8449))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8540 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8449 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8448 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8447 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8446 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8541 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8540))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_8447))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8541) .cse4 v_ArrVal_8446) .cse5 v_ArrVal_8449) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_8448) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2023-12-02 18:14:10,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886016932] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:14:10,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:14:10,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2023-12-02 18:14:10,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765039320] [2023-12-02 18:14:10,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:14:10,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 18:14:10,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:14:10,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 18:14:10,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=297, Unknown=15, NotChecked=720, Total=1122 [2023-12-02 18:14:10,828 INFO L87 Difference]: Start difference. First operand 1774 states and 2448 transitions. Second operand has 17 states, 14 states have (on average 8.642857142857142) internal successors, (121), 17 states have internal predecessors, (121), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:14:47,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:14:47,081 INFO L93 Difference]: Finished difference Result 2127 states and 2768 transitions. [2023-12-02 18:14:47,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 18:14:47,082 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 8.642857142857142) internal successors, (121), 17 states have internal predecessors, (121), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 108 [2023-12-02 18:14:47,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:14:47,086 INFO L225 Difference]: With dead ends: 2127 [2023-12-02 18:14:47,086 INFO L226 Difference]: Without dead ends: 2127 [2023-12-02 18:14:47,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 308 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 15 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=143, Invalid=502, Unknown=15, NotChecked=900, Total=1560 [2023-12-02 18:14:47,087 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1586 mSDsluCounter, 2529 mSDsCounter, 0 mSdLazyCounter, 9900 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 9928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 9900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:14:47,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1594 Valid, 3019 Invalid, 9928 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 9900 Invalid, 0 Unknown, 0 Unchecked, 35.6s Time] [2023-12-02 18:14:47,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2023-12-02 18:14:47,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 1773. [2023-12-02 18:14:47,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1365 states have (on average 1.7655677655677655) internal successors, (2410), 1753 states have internal predecessors, (2410), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2023-12-02 18:14:47,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 2445 transitions. [2023-12-02 18:14:47,111 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 2445 transitions. Word has length 108 [2023-12-02 18:14:47,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:14:47,112 INFO L495 AbstractCegarLoop]: Abstraction has 1773 states and 2445 transitions. [2023-12-02 18:14:47,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 8.642857142857142) internal successors, (121), 17 states have internal predecessors, (121), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:14:47,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 2445 transitions. [2023-12-02 18:14:47,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-02 18:14:47,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:14:47,114 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:14:47,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (38)] Ended with exit code 0 [2023-12-02 18:14:47,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-12-02 18:14:47,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2023-12-02 18:14:47,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:14:47,715 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-12-02 18:14:47,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:14:47,715 INFO L85 PathProgramCache]: Analyzing trace with hash 2040875411, now seen corresponding path program 1 times [2023-12-02 18:14:47,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:14:47,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29245176] [2023-12-02 18:14:47,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:47,716 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 [2023-12-02 18:14:47,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:14:47,717 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:14:47,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-12-02 18:14:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:14:49,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-02 18:14:49,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:14:49,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 18:14:49,349 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 18:14:49,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 18:14:49,418 INFO L378 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 19 treesize of output 1 [2023-12-02 18:14:49,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-02 18:14:51,031 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:14:51,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 18:14:51,234 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:14:51,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 18:14:51,381 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:14:51,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 18:14:51,546 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:14:51,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 18:14:51,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-12-02 18:14:51,644 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:14:51,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:14:51,757 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8980 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8980) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2023-12-02 18:14:51,777 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8980 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_8980) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2023-12-02 18:14:51,800 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8980 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8979 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8979))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8980)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2023-12-02 18:14:51,823 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8980 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8979 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8979))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8980)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 18:14:51,848 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8980 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8979 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8978 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8978))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8979)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8980)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 18:14:51,875 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8980 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8979 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8978 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8978))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8979)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8980)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 18:14:52,408 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8980 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8979 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8978 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9026 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_9026))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8978)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8979)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8980)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 18:14:52,415 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:14:52,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29245176] [2023-12-02 18:14:52,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29245176] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:14:52,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1836491606] [2023-12-02 18:14:52,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:14:52,415 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:14:52,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:14:52,417 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:14:52,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2023-12-02 18:16:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:16:11,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-02 18:16:11,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:16:12,019 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-02 18:16:12,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-12-02 18:16:12,859 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2023-12-02 18:16:12,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2023-12-02 18:16:12,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 18:16:13,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-12-02 18:16:15,699 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:16:15,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-12-02 18:16:16,080 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:16:16,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-12-02 18:16:16,325 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:16:16,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-12-02 18:16:16,581 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:16:16,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-12-02 18:16:16,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-12-02 18:16:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:16:16,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:16:16,769 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9465 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_9465) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 18:16:16,788 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9465 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_9465) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 18:16:16,810 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9464 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9465 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_9464))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9465)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 18:16:16,832 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9464 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9465 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9464))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9465)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 18:16:16,856 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9464 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9463 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9465 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_9463))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9464)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9465)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 18:16:16,883 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9464 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9463 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9465 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9463))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9464)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9465)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 18:16:17,417 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9464 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9463 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9511 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9465 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_9511))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9463)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9464)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9465)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 18:16:17,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1836491606] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:16:17,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290384704] [2023-12-02 18:16:17,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:16:17,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:16:17,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:16:17,425 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:16:17,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-02 18:16:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:16:18,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-02 18:16:18,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:16:18,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 18:16:18,430 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:16:18,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 18:16:18,514 INFO L378 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 19 treesize of output 1 [2023-12-02 18:16:19,309 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:16:19,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-12-02 18:16:19,476 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:16:19,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-12-02 18:16:19,636 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:16:19,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-12-02 18:16:19,795 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:16:19,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 18:16:19,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-12-02 18:16:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:16:19,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:16:19,959 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2023-12-02 18:16:19,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2023-12-02 18:16:20,176 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9949 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_9949) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2023-12-02 18:16:20,194 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9949 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9948 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_9948)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_9949) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1)))) is different from false [2023-12-02 18:16:20,211 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9949 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9948 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9948))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_9949) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2023-12-02 18:16:20,233 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9949 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9948 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9947 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_9947))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9948)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_9949) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2023-12-02 18:16:20,255 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9949 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9948 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9947 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9947))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9948)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_9949) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2023-12-02 18:16:20,810 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9949 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9948 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9947 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9995 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_9995))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9947)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9948)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_9949) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2023-12-02 18:16:20,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290384704] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:16:20,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:16:20,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 32 [2023-12-02 18:16:20,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757810654] [2023-12-02 18:16:20,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:16:20,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 18:16:20,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:16:20,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 18:16:20,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1020, Unknown=32, NotChecked=1700, Total=2970 [2023-12-02 18:16:20,817 INFO L87 Difference]: Start difference. First operand 1773 states and 2445 transitions. Second operand has 33 states, 29 states have (on average 5.172413793103448) internal successors, (150), 33 states have internal predecessors, (150), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 18:16:50,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:16:50,794 INFO L93 Difference]: Finished difference Result 2298 states and 2728 transitions. [2023-12-02 18:16:50,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 18:16:50,795 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 5.172413793103448) internal successors, (150), 33 states have internal predecessors, (150), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 110 [2023-12-02 18:16:50,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:16:50,799 INFO L225 Difference]: With dead ends: 2298 [2023-12-02 18:16:50,799 INFO L226 Difference]: Without dead ends: 2298 [2023-12-02 18:16:50,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 302 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 20 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=266, Invalid=1342, Unknown=32, NotChecked=1900, Total=3540 [2023-12-02 18:16:50,800 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 2601 mSDsluCounter, 5234 mSDsCounter, 0 mSdLazyCounter, 7900 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2615 SdHoareTripleChecker+Valid, 5752 SdHoareTripleChecker+Invalid, 7967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 7900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:16:50,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2615 Valid, 5752 Invalid, 7967 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 7900 Invalid, 0 Unknown, 0 Unchecked, 29.3s Time] [2023-12-02 18:16:50,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2023-12-02 18:16:50,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 1772. [2023-12-02 18:16:50,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1772 states, 1365 states have (on average 1.7633699633699633) internal successors, (2407), 1752 states have internal predecessors, (2407), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2023-12-02 18:16:50,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2442 transitions. [2023-12-02 18:16:50,823 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2442 transitions. Word has length 110 [2023-12-02 18:16:50,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:16:50,823 INFO L495 AbstractCegarLoop]: Abstraction has 1772 states and 2442 transitions. [2023-12-02 18:16:50,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 5.172413793103448) internal successors, (150), 33 states have internal predecessors, (150), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 18:16:50,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2442 transitions. [2023-12-02 18:16:50,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-02 18:16:50,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:16:50,824 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:16:50,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (41)] Ended with exit code 0 [2023-12-02 18:16:51,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-12-02 18:16:51,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2023-12-02 18:16:51,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:16:51,425 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-12-02 18:16:51,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:16:51,426 INFO L85 PathProgramCache]: Analyzing trace with hash 2040875412, now seen corresponding path program 1 times [2023-12-02 18:16:51,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:16:51,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232281309] [2023-12-02 18:16:51,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:16:51,427 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 [2023-12-02 18:16:51,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:16:51,427 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 18:16:51,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-12-02 18:16:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:16:52,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 118 conjunts are in the unsatisfiable core [2023-12-02 18:16:52,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:16:52,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 18:16:53,010 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:16:53,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 18:16:53,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 18:16:53,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 18:16:53,084 INFO L378 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 19 treesize of output 1 [2023-12-02 18:16:53,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-02 18:16:53,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 18:16:54,456 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:16:54,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 18:16:54,478 INFO L378 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 30 treesize of output 13 [2023-12-02 18:16:54,669 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:16:54,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 18:16:54,691 INFO L378 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 30 treesize of output 13 [2023-12-02 18:16:54,846 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:16:54,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 18:16:54,861 INFO L378 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 30 treesize of output 13 [2023-12-02 18:16:55,029 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:16:55,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 18:16:55,052 INFO L378 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 30 treesize of output 13 [2023-12-02 18:16:55,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-12-02 18:16:55,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 18:16:55,144 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:16:55,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:16:55,409 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10481 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10482 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_10481) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_10482) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_10481 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_10481) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv20 32)) (bvadd .cse1 (_ bv24 32))))))) is different from false [2023-12-02 18:16:55,457 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_10481 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_10481) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_10481 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10482 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_10481) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_10482) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-12-02 18:16:55,547 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10481 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10482 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10479 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10480 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_10480))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_10479) .cse0 v_ArrVal_10481) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_10482) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_10481 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10479 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10480 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_10479) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_10480) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10481) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv20 32)) (bvadd .cse3 (_ bv24 32))))))) is different from false [2023-12-02 18:16:55,611 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_10481 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10482 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10479 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10480 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_10480))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_10479) .cse1 v_ArrVal_10481) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_10482) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_10481 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10479 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10480 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_10479) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_10480) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_10481) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse4 (_ bv20 32)) (bvadd .cse4 (_ bv24 32)))))))) is different from false [2023-12-02 18:16:55,726 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10481 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10482 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10477 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10478 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10479 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10480 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_10477))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_10480))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_10478) .cse0 v_ArrVal_10479) .cse1 v_ArrVal_10481) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_10482) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_10481 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10477 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10478 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10479 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10480 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_10477))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_10478) .cse6 v_ArrVal_10479) (select (select (store .cse7 .cse6 v_ArrVal_10480) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_10481))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse5 (_ bv20 32)) (bvadd .cse5 (_ bv24 32))))))) is different from false [2023-12-02 18:16:58,021 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10481 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10477 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10573 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10574 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10478 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10479 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10480 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_10574))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_10477))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_10573) .cse1 v_ArrVal_10478) .cse2 v_ArrVal_10479) (select (select (store .cse3 .cse2 v_ArrVal_10480) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_10481))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_10481 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10482 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10477 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10573 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10574 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10478 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10479 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10480 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_10574))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_10477))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_10480))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (select (select (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_10573) .cse6 v_ArrVal_10478) .cse7 v_ArrVal_10479) .cse8 v_ArrVal_10481) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (_ bv24 32)) (select |c_#length| (select (select (store .cse9 .cse8 v_ArrVal_10482) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) is different from false [2023-12-02 18:16:58,048 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:16:58,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232281309] [2023-12-02 18:16:58,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232281309] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:16:58,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [489617667] [2023-12-02 18:16:58,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:16:58,049 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:16:58,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:16:58,050 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:16:58,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42733c52-0a3a-4433-9321-fb20efb60854/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process