./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX --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 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:52:06,114 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:52:06,233 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-12 00:52:06,241 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:52:06,242 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:52:06,281 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:52:06,281 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:52:06,282 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:52:06,283 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:52:06,288 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:52:06,288 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:52:06,290 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:52:06,290 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:52:06,291 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:52:06,291 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:52:06,291 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:52:06,292 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:52:06,292 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:52:06,293 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:52:06,293 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:52:06,294 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:52:06,294 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:52:06,295 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:52:06,295 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:52:06,296 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:52:06,297 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:52:06,297 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:52:06,297 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:52:06,298 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:52:06,298 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:52:06,300 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:52:06,300 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:52:06,300 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:52:06,301 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:52:06,301 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:52:06,301 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:52:06,301 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:52:06,302 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:52:06,302 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:52:06,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:52:06,302 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:52:06,303 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:52:06,303 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:52:06,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:52:06,304 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:52:06,304 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:52:06,304 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_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 [2023-11-12 00:52:06,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:52:06,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:52:06,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:52:06,633 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:52:06,634 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:52:06,636 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2023-11-12 00:52:09,818 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:52:10,059 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:52:10,060 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2023-11-12 00:52:10,069 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/data/498586d46/b4a1a7d21b6a4172a4c19c6758275695/FLAGbcee8f977 [2023-11-12 00:52:10,086 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/data/498586d46/b4a1a7d21b6a4172a4c19c6758275695 [2023-11-12 00:52:10,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:52:10,091 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:52:10,092 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:52:10,093 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:52:10,099 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:52:10,100 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:52:10" (1/1) ... [2023-11-12 00:52:10,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ee0b8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:10, skipping insertion in model container [2023-11-12 00:52:10,102 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:52:10" (1/1) ... [2023-11-12 00:52:10,138 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:52:10,415 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:52:10,429 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) [2023-11-12 00:52:10,430 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7b63d14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:10, skipping insertion in model container [2023-11-12 00:52:10,431 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:52:10,431 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 00:52:10,434 INFO L158 Benchmark]: Toolchain (without parser) took 341.96ms. Allocated memory is still 148.9MB. Free memory was 103.0MB in the beginning and 92.8MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-12 00:52:10,434 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 148.9MB. Free memory is still 123.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:52:10,435 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.04ms. Allocated memory is still 148.9MB. Free memory was 102.8MB in the beginning and 92.8MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-12 00:52:10,437 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 148.9MB. Free memory is still 123.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 339.04ms. Allocated memory is still 148.9MB. Free memory was 102.8MB in the beginning and 92.8MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 101]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX --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 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:52:12,907 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:52:13,054 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-12 00:52:13,062 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:52:13,063 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:52:13,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:52:13,102 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:52:13,103 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:52:13,104 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:52:13,109 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:52:13,109 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:52:13,110 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:52:13,110 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:52:13,112 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:52:13,113 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:52:13,113 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:52:13,114 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:52:13,115 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:52:13,116 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:52:13,117 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:52:13,117 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:52:13,118 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:52:13,118 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:52:13,119 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:52:13,119 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:52:13,120 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:52:13,120 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:52:13,120 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:52:13,121 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:52:13,121 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:52:13,123 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:52:13,123 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:52:13,123 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:52:13,124 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:52:13,124 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:52:13,124 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:52:13,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:52:13,125 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:52:13,126 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:52:13,126 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:52:13,126 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:52:13,127 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:52:13,127 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:52:13,127 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_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 [2023-11-12 00:52:13,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:52:13,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:52:13,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:52:13,613 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:52:13,614 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:52:13,615 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2023-11-12 00:52:16,761 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:52:17,094 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:52:17,095 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2023-11-12 00:52:17,108 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/data/254aff361/cef85a4e8ab84c45b4a0c048b81bce71/FLAG5ee9499bd [2023-11-12 00:52:17,136 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/data/254aff361/cef85a4e8ab84c45b4a0c048b81bce71 [2023-11-12 00:52:17,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:52:17,145 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:52:17,151 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:52:17,151 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:52:17,157 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:52:17,158 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:52:17" (1/1) ... [2023-11-12 00:52:17,159 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b0fd93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:17, skipping insertion in model container [2023-11-12 00:52:17,159 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:52:17" (1/1) ... [2023-11-12 00:52:17,198 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:52:17,486 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:52:17,501 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 00:52:17,507 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:52:17,529 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:52:17,538 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:52:17,568 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:52:17,589 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:52:17,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:17 WrapperNode [2023-11-12 00:52:17,590 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:52:17,591 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:52:17,591 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:52:17,592 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:52:17,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:17" (1/1) ... [2023-11-12 00:52:17,615 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:17" (1/1) ... [2023-11-12 00:52:17,651 INFO L138 Inliner]: procedures = 27, calls = 40, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 201 [2023-11-12 00:52:17,651 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:52:17,652 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:52:17,652 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:52:17,653 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:52:17,664 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:17" (1/1) ... [2023-11-12 00:52:17,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:17" (1/1) ... [2023-11-12 00:52:17,670 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:17" (1/1) ... [2023-11-12 00:52:17,671 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:17" (1/1) ... [2023-11-12 00:52:17,703 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:17" (1/1) ... [2023-11-12 00:52:17,708 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:17" (1/1) ... [2023-11-12 00:52:17,711 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:17" (1/1) ... [2023-11-12 00:52:17,714 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:17" (1/1) ... [2023-11-12 00:52:17,727 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:52:17,728 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:52:17,729 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:52:17,729 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:52:17,730 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:17" (1/1) ... [2023-11-12 00:52:17,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:52:17,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:52:17,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:52:17,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:52:17,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:52:17,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:52:17,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:52:17,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 00:52:17,835 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 00:52:17,835 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 00:52:17,835 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 00:52:17,836 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 00:52:17,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:52:17,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:52:17,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:52:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:52:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 00:52:17,865 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 00:52:18,093 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:52:18,096 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:52:18,890 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:52:18,902 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:52:18,902 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-12 00:52:18,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:52:18 BoogieIcfgContainer [2023-11-12 00:52:18,906 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:52:18,909 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:52:18,909 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:52:18,913 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:52:18,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:52:17" (1/3) ... [2023-11-12 00:52:18,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41622313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:52:18, skipping insertion in model container [2023-11-12 00:52:18,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:17" (2/3) ... [2023-11-12 00:52:18,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41622313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:52:18, skipping insertion in model container [2023-11-12 00:52:18,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:52:18" (3/3) ... [2023-11-12 00:52:18,917 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2023-11-12 00:52:18,940 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:52:18,940 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-12 00:52:18,940 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:52:19,103 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 00:52:19,149 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:52:19,166 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 277 places, 291 transitions, 596 flow [2023-11-12 00:52:19,169 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 277 places, 291 transitions, 596 flow [2023-11-12 00:52:19,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 277 places, 291 transitions, 596 flow [2023-11-12 00:52:19,332 INFO L124 PetriNetUnfolderBase]: 21/289 cut-off events. [2023-11-12 00:52:19,333 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 00:52:19,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 289 events. 21/289 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 518 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 180. Up to 3 conditions per place. [2023-11-12 00:52:19,360 INFO L119 LiptonReduction]: Number of co-enabled transitions 9396 [2023-11-12 00:52:59,503 INFO L134 LiptonReduction]: Checked pairs total: 12176 [2023-11-12 00:52:59,503 INFO L136 LiptonReduction]: Total number of compositions: 345 [2023-11-12 00:52:59,512 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 57 places, 55 transitions, 124 flow [2023-11-12 00:52:59,592 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 729 states, 443 states have (on average 4.417607223476298) internal successors, (1957), 728 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:52:59,610 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:52:59,617 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;@281caf01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:52:59,617 INFO L358 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2023-11-12 00:52:59,621 INFO L276 IsEmpty]: Start isEmpty. Operand has 729 states, 443 states have (on average 4.417607223476298) internal successors, (1957), 728 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:52:59,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-12 00:52:59,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:59,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-12 00:52:59,626 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-12 00:52:59,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:59,632 INFO L85 PathProgramCache]: Analyzing trace with hash 37131, now seen corresponding path program 1 times [2023-11-12 00:52:59,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:52:59,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495497862] [2023-11-12 00:52:59,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:59,646 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:52:59,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:52:59,647 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/mathsat -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) [2023-11-12 00:52:59,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/mathsat -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 [2023-11-12 00:52:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:59,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:52:59,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:52:59,813 INFO L351 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 11 treesize of output 7 [2023-11-12 00:52:59,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:52:59,848 INFO L351 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 1 [2023-11-12 00:52:59,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:52:59,860 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-12 00:52:59,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:52:59,866 INFO L351 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 1 [2023-11-12 00:52:59,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:52:59,890 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-12 00:52:59,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:52:59,900 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-12 00:52:59,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:52:59,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:52:59,909 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:52:59,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495497862] [2023-11-12 00:52:59,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495497862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:59,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:59,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:52:59,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768046215] [2023-11-12 00:52:59,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:59,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:52:59,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:52:59,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:52:59,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:52:59,949 INFO L87 Difference]: Start difference. First operand has 729 states, 443 states have (on average 4.417607223476298) internal successors, (1957), 728 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:00,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:53:00,384 INFO L93 Difference]: Finished difference Result 486 states and 1290 transitions. [2023-11-12 00:53:00,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:53:00,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-12 00:53:00,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:53:00,405 INFO L225 Difference]: With dead ends: 486 [2023-11-12 00:53:00,405 INFO L226 Difference]: Without dead ends: 486 [2023-11-12 00:53:00,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:53:00,410 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:53:00,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:53:00,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2023-11-12 00:53:00,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 486. [2023-11-12 00:53:00,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 319 states have (on average 4.043887147335423) internal successors, (1290), 485 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:00,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 1290 transitions. [2023-11-12 00:53:00,493 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 1290 transitions. Word has length 2 [2023-11-12 00:53:00,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:53:00,494 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 1290 transitions. [2023-11-12 00:53:00,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:00,494 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 1290 transitions. [2023-11-12 00:53:00,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-12 00:53:00,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:00,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-12 00:53:00,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/mathsat -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 [2023-11-12 00:53:00,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:53:00,707 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-12 00:53:00,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:00,708 INFO L85 PathProgramCache]: Analyzing trace with hash 37132, now seen corresponding path program 1 times [2023-11-12 00:53:00,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:53:00,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158076155] [2023-11-12 00:53:00,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:00,709 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:53:00,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:53:00,711 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/mathsat -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) [2023-11-12 00:53:00,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/mathsat -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 [2023-11-12 00:53:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:00,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:53:00,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:53:00,823 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-12 00:53:00,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:00,844 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 00:53:00,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:00,864 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 00:53:00,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:00,889 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-12 00:53:00,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:00,907 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 00:53:00,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:00,916 INFO L351 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 8 treesize of output 1 [2023-11-12 00:53:00,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:53:00,943 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:53:00,944 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:53:00,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158076155] [2023-11-12 00:53:00,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158076155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:53:00,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:53:00,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:53:00,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973267902] [2023-11-12 00:53:00,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:53:00,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:53:00,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:53:00,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:53:00,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:53:00,947 INFO L87 Difference]: Start difference. First operand 486 states and 1290 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:01,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:53:01,365 INFO L93 Difference]: Finished difference Result 488 states and 1296 transitions. [2023-11-12 00:53:01,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:53:01,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-12 00:53:01,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:53:01,373 INFO L225 Difference]: With dead ends: 488 [2023-11-12 00:53:01,373 INFO L226 Difference]: Without dead ends: 488 [2023-11-12 00:53:01,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:53:01,375 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:53:01,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:53:01,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-12 00:53:01,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2023-11-12 00:53:01,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 321 states have (on average 4.037383177570093) internal successors, (1296), 487 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:01,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 1296 transitions. [2023-11-12 00:53:01,410 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 1296 transitions. Word has length 2 [2023-11-12 00:53:01,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:53:01,410 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 1296 transitions. [2023-11-12 00:53:01,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:01,410 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 1296 transitions. [2023-11-12 00:53:01,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:53:01,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:01,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:53:01,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:53:01,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:53:01,625 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-12 00:53:01,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:01,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1155536, now seen corresponding path program 1 times [2023-11-12 00:53:01,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:53:01,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [666301864] [2023-11-12 00:53:01,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:01,627 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 [2023-11-12 00:53:01,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:53:01,628 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/mathsat -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) [2023-11-12 00:53:01,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/mathsat -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 [2023-11-12 00:53:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:01,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 00:53:01,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:53:01,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:01,757 INFO L351 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 11 treesize of output 5 [2023-11-12 00:53:01,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:01,775 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-12 00:53:01,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:01,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:01,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:01,813 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-12 00:53:01,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:01,859 INFO L351 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 [2023-11-12 00:53:01,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:53:01,939 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:53:01,939 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:53:01,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [666301864] [2023-11-12 00:53:01,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [666301864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:53:01,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:53:01,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:53:01,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596426724] [2023-11-12 00:53:01,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:53:01,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:53:01,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:53:01,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:53:01,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:53:01,942 INFO L87 Difference]: Start difference. First operand 488 states and 1296 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:02,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:53:02,310 INFO L93 Difference]: Finished difference Result 389 states and 993 transitions. [2023-11-12 00:53:02,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:53:02,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-12 00:53:02,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:53:02,315 INFO L225 Difference]: With dead ends: 389 [2023-11-12 00:53:02,315 INFO L226 Difference]: Without dead ends: 389 [2023-11-12 00:53:02,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:53:02,317 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 82 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:53:02,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 0 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:53:02,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-11-12 00:53:02,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2023-11-12 00:53:02,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 268 states have (on average 3.705223880597015) internal successors, (993), 388 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:02,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 993 transitions. [2023-11-12 00:53:02,338 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 993 transitions. Word has length 3 [2023-11-12 00:53:02,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:53:02,338 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 993 transitions. [2023-11-12 00:53:02,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:02,339 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 993 transitions. [2023-11-12 00:53:02,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:53:02,339 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:02,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:53:02,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:53:02,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:53:02,555 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-12 00:53:02,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:02,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1155537, now seen corresponding path program 1 times [2023-11-12 00:53:02,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:53:02,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039102572] [2023-11-12 00:53:02,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:02,557 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 [2023-11-12 00:53:02,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:53:02,558 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/mathsat -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) [2023-11-12 00:53:02,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/mathsat -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 [2023-11-12 00:53:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:02,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:53:02,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:53:02,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:02,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:02,676 INFO L351 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 17 treesize of output 11 [2023-11-12 00:53:02,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:02,727 INFO L322 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-12 00:53:02,728 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 15 [2023-11-12 00:53:02,784 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-12 00:53:02,784 INFO L351 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 [2023-11-12 00:53:02,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:53:02,799 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:53:02,799 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:53:02,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039102572] [2023-11-12 00:53:02,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039102572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:53:02,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:53:02,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:53:02,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000371594] [2023-11-12 00:53:02,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:53:02,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:53:02,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:53:02,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:53:02,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:53:02,801 INFO L87 Difference]: Start difference. First operand 389 states and 993 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:03,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:53:03,131 INFO L93 Difference]: Finished difference Result 290 states and 690 transitions. [2023-11-12 00:53:03,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:53:03,132 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 [2023-11-12 00:53:03,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:53:03,135 INFO L225 Difference]: With dead ends: 290 [2023-11-12 00:53:03,135 INFO L226 Difference]: Without dead ends: 290 [2023-11-12 00:53:03,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:53:03,137 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:53:03,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:53:03,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-11-12 00:53:03,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2023-11-12 00:53:03,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 215 states have (on average 3.2093023255813953) internal successors, (690), 289 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:03,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 690 transitions. [2023-11-12 00:53:03,150 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 690 transitions. Word has length 3 [2023-11-12 00:53:03,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:53:03,151 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 690 transitions. [2023-11-12 00:53:03,151 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) [2023-11-12 00:53:03,151 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 690 transitions. [2023-11-12 00:53:03,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:53:03,151 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:03,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:53:03,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/mathsat -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 [2023-11-12 00:53:03,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:53:03,374 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-12 00:53:03,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:03,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1153287, now seen corresponding path program 1 times [2023-11-12 00:53:03,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:53:03,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879366824] [2023-11-12 00:53:03,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:03,376 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 [2023-11-12 00:53:03,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:53:03,377 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/mathsat -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) [2023-11-12 00:53:03,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/mathsat -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 [2023-11-12 00:53:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:03,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 00:53:03,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:53:03,476 INFO L351 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 13 treesize of output 7 [2023-11-12 00:53:03,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:03,517 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-12 00:53:03,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:03,533 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 00:53:03,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:03,544 INFO L351 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 8 treesize of output 1 [2023-11-12 00:53:03,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:03,559 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 00:53:03,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:03,571 INFO L351 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 8 treesize of output 1 [2023-11-12 00:53:03,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:53:03,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:53:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:53:03,925 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:53:03,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879366824] [2023-11-12 00:53:03,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879366824] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:53:03,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [4817402] [2023-11-12 00:53:03,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:03,926 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 00:53:03,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/cvc4 [2023-11-12 00:53:03,966 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 00:53:03,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-12 00:53:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:04,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 00:53:04,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:53:04,113 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-12 00:53:04,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:04,127 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 00:53:04,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:04,140 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 00:53:04,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:04,148 INFO L351 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 8 treesize of output 1 [2023-11-12 00:53:04,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:04,162 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 00:53:04,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:04,185 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-12 00:53:04,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:53:04,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:53:04,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:53:04,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [4817402] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:53:04,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678951352] [2023-11-12 00:53:04,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:04,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:53:04,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:53:04,311 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:53:04,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551e687d-ba80-4eeb-8b72-0d727f26a9b4/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 00:53:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:04,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:53:04,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:53:04,434 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-12 00:53:04,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:04,451 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 00:53:04,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:04,486 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-12 00:53:04,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:04,499 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 00:53:04,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:04,513 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 00:53:04,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:53:04,524 INFO L351 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 8 treesize of output 1 [2023-11-12 00:53:04,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:53:04,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:53:04,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:53:04,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678951352] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:53:04,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-12 00:53:04,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2, 2, 2, 2] total 6 [2023-11-12 00:53:04,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516681980] [2023-11-12 00:53:04,757 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-12 00:53:04,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:53:04,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:53:04,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:53:04,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:53:04,758 INFO L87 Difference]: Start difference. First operand 290 states and 690 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)