./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d7bcbc7066f71bf6da4f6dede38e3e78b7607c55d003b39ab5a687b04791c2e1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:20:54,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:20:54,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:20:54,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:20:54,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:20:54,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:20:54,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:20:54,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:20:54,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:20:54,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:20:54,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:20:54,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:20:54,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:20:54,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:20:54,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:20:54,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:20:54,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:20:54,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:20:54,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:20:54,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:20:54,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:20:54,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:20:54,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:20:54,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:20:54,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:20:54,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:20:54,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:20:54,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:20:54,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:20:54,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:20:55,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:20:55,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:20:55,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:20:55,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:20:55,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:20:55,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:20:55,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:20:55,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:20:55,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:20:55,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:20:55,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:20:55,009 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:20:55,054 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:20:55,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:20:55,058 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:20:55,059 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:20:55,059 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:20:55,059 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:20:55,059 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:20:55,060 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:20:55,066 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:20:55,066 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:20:55,067 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:20:55,067 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:20:55,067 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:20:55,068 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:20:55,068 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:20:55,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:20:55,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:20:55,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:20:55,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:20:55,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:20:55,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:20:55,070 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:20:55,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:20:55,070 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:20:55,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:20:55,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:20:55,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:20:55,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:20:55,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:20:55,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:20:55,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:20:55,072 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:20:55,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:20:55,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:20:55,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:20:55,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:20:55,074 INFO L138 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_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7bcbc7066f71bf6da4f6dede38e3e78b7607c55d003b39ab5a687b04791c2e1 [2021-11-07 01:20:55,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:20:55,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:20:55,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:20:55,352 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:20:55,353 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:20:55,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 01:20:55,433 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/data/055a701d7/407ed33290f44d7caa8f46fb5e27207a/FLAG67a55aad0 [2021-11-07 01:20:56,274 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:20:56,274 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 01:20:56,309 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/data/055a701d7/407ed33290f44d7caa8f46fb5e27207a/FLAG67a55aad0 [2021-11-07 01:20:56,807 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/data/055a701d7/407ed33290f44d7caa8f46fb5e27207a [2021-11-07 01:20:56,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:20:56,811 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:20:56,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:20:56,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:20:56,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:20:56,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:20:56" (1/1) ... [2021-11-07 01:20:56,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45e36490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:56, skipping insertion in model container [2021-11-07 01:20:56,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:20:56" (1/1) ... [2021-11-07 01:20:56,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:20:56,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:20:57,972 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i[209427,209440] [2021-11-07 01:20:57,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:20:58,093 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:20:58,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@38375af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:58, skipping insertion in model container [2021-11-07 01:20:58,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:20:58,096 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:20:58,098 INFO L168 Benchmark]: Toolchain (without parser) took 1286.07 ms. Allocated memory is still 134.2 MB. Free memory was 90.0 MB in the beginning and 56.0 MB in the end (delta: 34.0 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:20:58,099 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 81.8 MB. Free memory is still 38.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:20:58,100 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1283.30 ms. Allocated memory is still 134.2 MB. Free memory was 89.8 MB in the beginning and 56.0 MB in the end (delta: 33.8 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:20:58,103 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 81.8 MB. Free memory is still 38.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1283.30 ms. Allocated memory is still 134.2 MB. Free memory was 89.8 MB in the beginning and 56.0 MB in the end (delta: 33.8 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2842]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d7bcbc7066f71bf6da4f6dede38e3e78b7607c55d003b39ab5a687b04791c2e1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:21:00,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:21:00,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:21:00,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:21:00,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:21:00,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:21:00,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:21:00,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:21:00,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:21:00,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:21:00,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:21:00,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:21:00,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:21:00,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:21:00,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:21:00,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:21:00,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:21:00,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:21:00,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:21:00,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:21:00,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:21:00,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:21:00,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:21:00,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:21:00,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:21:00,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:21:00,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:21:00,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:21:00,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:21:00,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:21:00,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:21:00,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:21:00,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:21:00,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:21:00,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:21:00,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:21:00,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:21:00,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:21:00,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:21:00,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:21:00,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:21:00,415 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:21:00,441 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:21:00,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:21:00,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:21:00,443 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:21:00,443 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:21:00,444 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:21:00,444 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:21:00,444 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:21:00,445 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:21:00,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:21:00,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:21:00,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:21:00,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:21:00,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:21:00,447 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:21:00,447 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:21:00,447 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:21:00,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:21:00,448 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:21:00,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:21:00,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:21:00,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:21:00,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:21:00,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:21:00,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:21:00,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:21:00,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:21:00,451 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:21:00,451 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:21:00,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:21:00,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:21:00,451 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:21:00,452 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7bcbc7066f71bf6da4f6dede38e3e78b7607c55d003b39ab5a687b04791c2e1 [2021-11-07 01:21:00,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:21:00,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:21:00,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:21:00,940 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:21:00,941 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:21:00,942 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 01:21:01,011 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/data/e67186d57/165a2d8e3b004919a21355d04a13e0ce/FLAGc102815c5 [2021-11-07 01:21:02,049 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:21:02,050 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 01:21:02,087 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/data/e67186d57/165a2d8e3b004919a21355d04a13e0ce/FLAGc102815c5 [2021-11-07 01:21:02,104 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/data/e67186d57/165a2d8e3b004919a21355d04a13e0ce [2021-11-07 01:21:02,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:21:02,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:21:02,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:21:02,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:21:02,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:21:02,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:21:02" (1/1) ... [2021-11-07 01:21:02,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d70057c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:02, skipping insertion in model container [2021-11-07 01:21:02,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:21:02" (1/1) ... [2021-11-07 01:21:02,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:21:02,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:21:03,563 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i[209427,209440] [2021-11-07 01:21:03,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:21:03,752 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:21:03,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:21:04,058 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i[209427,209440] [2021-11-07 01:21:04,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:21:04,158 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:21:04,436 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i[209427,209440] [2021-11-07 01:21:04,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:21:04,639 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:21:04,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:04 WrapperNode [2021-11-07 01:21:04,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:21:04,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:21:04,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:21:04,642 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:21:04,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:04" (1/1) ... [2021-11-07 01:21:04,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:04" (1/1) ... [2021-11-07 01:21:05,238 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:21:05,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:21:05,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:21:05,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:21:05,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:04" (1/1) ... [2021-11-07 01:21:05,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:04" (1/1) ... [2021-11-07 01:21:05,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:04" (1/1) ... [2021-11-07 01:21:05,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:04" (1/1) ... [2021-11-07 01:21:05,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:04" (1/1) ... [2021-11-07 01:21:05,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:04" (1/1) ... [2021-11-07 01:21:05,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:04" (1/1) ... [2021-11-07 01:21:05,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:21:05,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:21:05,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:21:05,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:21:05,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:04" (1/1) ... [2021-11-07 01:21:05,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:21:05,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:21:06,033 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:21:06,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:21:06,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:21:06,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:21:06,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:21:06,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:21:06,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:21:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:21:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:21:06,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:21:06,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:21:06,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:21:06,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:21:06,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:21:06,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:21:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:21:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:21:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:21:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:21:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:21:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:21:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:21:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:21:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:21:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:21:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:21:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:21:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:21:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:21:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:21:06,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:22:33,570 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:22:33,571 INFO L299 CfgBuilder]: Removed 2531 assume(true) statements. [2021-11-07 01:22:33,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:22:33 BoogieIcfgContainer [2021-11-07 01:22:33,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:22:33,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:22:33,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:22:33,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:22:33,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:21:02" (1/3) ... [2021-11-07 01:22:33,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a8ff72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:22:33, skipping insertion in model container [2021-11-07 01:22:33,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:04" (2/3) ... [2021-11-07 01:22:33,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a8ff72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:22:33, skipping insertion in model container [2021-11-07 01:22:33,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:22:33" (3/3) ... [2021-11-07 01:22:33,587 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 01:22:33,592 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:22:33,593 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 01:22:33,658 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:22:33,664 INFO L339 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:22:33,664 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 01:22:33,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 2867 states, 2856 states have (on average 1.4334733893557423) internal successors, (4094), 2866 states have internal predecessors, (4094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:33,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-07 01:22:33,742 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:33,743 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:22:33,743 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:22:33,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:33,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1906996444, now seen corresponding path program 1 times [2021-11-07 01:22:33,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:33,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038786865] [2021-11-07 01:22:33,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:33,774 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:33,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:33,780 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:33,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:22:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:36,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 4082 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:22:36,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:37,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:37,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:37,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:37,879 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:37,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038786865] [2021-11-07 01:22:37,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038786865] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:37,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:37,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:22:37,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519679345] [2021-11-07 01:22:37,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:22:37,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:37,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:22:37,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:22:37,911 INFO L87 Difference]: Start difference. First operand has 2867 states, 2856 states have (on average 1.4334733893557423) internal successors, (4094), 2866 states have internal predecessors, (4094), 0 states have call successors, (0), 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 2 states, 2 states have (on average 74.0) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:38,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:38,079 INFO L93 Difference]: Finished difference Result 5730 states and 8183 transitions. [2021-11-07 01:22:38,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:22:38,081 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 74.0) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2021-11-07 01:22:38,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:38,124 INFO L225 Difference]: With dead ends: 5730 [2021-11-07 01:22:38,124 INFO L226 Difference]: Without dead ends: 2852 [2021-11-07 01:22:38,140 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:22:38,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2021-11-07 01:22:38,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2852. [2021-11-07 01:22:38,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2852 states, 2842 states have (on average 1.423997185080929) internal successors, (4047), 2851 states have internal predecessors, (4047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:38,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 4047 transitions. [2021-11-07 01:22:38,355 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 4047 transitions. Word has length 148 [2021-11-07 01:22:38,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:38,356 INFO L470 AbstractCegarLoop]: Abstraction has 2852 states and 4047 transitions. [2021-11-07 01:22:38,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 74.0) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:38,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 4047 transitions. [2021-11-07 01:22:38,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-07 01:22:38,368 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:38,368 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:22:38,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:22:38,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:38,593 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:22:38,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:38,594 INFO L85 PathProgramCache]: Analyzing trace with hash 267116844, now seen corresponding path program 1 times [2021-11-07 01:22:38,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:38,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595946467] [2021-11-07 01:22:38,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:38,600 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:38,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:38,602 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:38,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:22:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:41,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 4082 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:22:41,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:41,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:42,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:42,813 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:42,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595946467] [2021-11-07 01:22:42,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595946467] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:42,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:42,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:22:42,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063925428] [2021-11-07 01:22:42,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:22:42,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:42,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:22:42,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:22:42,817 INFO L87 Difference]: Start difference. First operand 2852 states and 4047 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:44,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:44,580 INFO L93 Difference]: Finished difference Result 5762 states and 8229 transitions. [2021-11-07 01:22:44,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:22:44,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 148 [2021-11-07 01:22:44,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:44,599 INFO L225 Difference]: With dead ends: 5762 [2021-11-07 01:22:44,600 INFO L226 Difference]: Without dead ends: 2930 [2021-11-07 01:22:44,605 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:22:44,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2021-11-07 01:22:44,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 2930. [2021-11-07 01:22:44,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2930 states, 2920 states have (on average 1.4126712328767124) internal successors, (4125), 2929 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:44,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 4125 transitions. [2021-11-07 01:22:44,715 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 4125 transitions. Word has length 148 [2021-11-07 01:22:44,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:44,716 INFO L470 AbstractCegarLoop]: Abstraction has 2930 states and 4125 transitions. [2021-11-07 01:22:44,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:44,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 4125 transitions. [2021-11-07 01:22:44,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-07 01:22:44,721 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:44,722 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:22:44,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:44,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:44,939 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:22:44,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:44,940 INFO L85 PathProgramCache]: Analyzing trace with hash -989185492, now seen corresponding path program 1 times [2021-11-07 01:22:44,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:44,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826143412] [2021-11-07 01:22:44,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:44,946 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:44,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:44,948 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:44,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:22:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:47,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 4472 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:22:47,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:49,310 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-07 01:22:49,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:50,716 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-07 01:22:50,716 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:50,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826143412] [2021-11-07 01:22:50,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826143412] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:22:50,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [923244561] [2021-11-07 01:22:50,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:50,718 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:22:50,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:22:50,736 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:22:50,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 01:22:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:52,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 4472 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:22:52,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:53,316 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-07 01:22:53,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:53,760 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-07 01:22:53,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [923244561] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:53,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:22:53,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:22:53,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354842369] [2021-11-07 01:22:53,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:22:53,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:53,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:22:53,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:22:53,764 INFO L87 Difference]: Start difference. First operand 2930 states and 4125 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:55,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:55,135 INFO L93 Difference]: Finished difference Result 5862 states and 8291 transitions. [2021-11-07 01:22:55,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:22:55,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 226 [2021-11-07 01:22:55,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:55,160 INFO L225 Difference]: With dead ends: 5862 [2021-11-07 01:22:55,160 INFO L226 Difference]: Without dead ends: 3146 [2021-11-07 01:22:55,167 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 893 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:22:55,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3146 states. [2021-11-07 01:22:55,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3146 to 3146. [2021-11-07 01:22:55,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3146 states, 3136 states have (on average 1.4088010204081634) internal successors, (4418), 3145 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:55,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 4418 transitions. [2021-11-07 01:22:55,285 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 4418 transitions. Word has length 226 [2021-11-07 01:22:55,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:55,293 INFO L470 AbstractCegarLoop]: Abstraction has 3146 states and 4418 transitions. [2021-11-07 01:22:55,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:55,297 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 4418 transitions. [2021-11-07 01:22:55,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-07 01:22:55,302 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:55,303 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:22:55,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:55,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-11-07 01:22:55,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:22:55,720 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:22:55,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:55,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1820953466, now seen corresponding path program 1 times [2021-11-07 01:22:55,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:55,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401606515] [2021-11-07 01:22:55,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:55,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:55,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:55,726 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:55,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:22:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:58,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 4491 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:22:58,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:00,232 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-07 01:23:00,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:01,760 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-07 01:23:01,760 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:01,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401606515] [2021-11-07 01:23:01,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401606515] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:23:01,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1013706071] [2021-11-07 01:23:01,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:01,761 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:23:01,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:23:01,765 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:23:01,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 01:23:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:03,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 4491 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:23:03,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:06,050 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-07 01:23:06,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:08,139 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-07 01:23:08,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1013706071] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:08,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:23:08,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 10 [2021-11-07 01:23:08,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809240835] [2021-11-07 01:23:08,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:23:08,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:08,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:23:08,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:23:08,144 INFO L87 Difference]: Start difference. First operand 3146 states and 4418 transitions. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:08,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:08,299 INFO L93 Difference]: Finished difference Result 6078 states and 8583 transitions. [2021-11-07 01:23:08,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:23:08,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 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 238 [2021-11-07 01:23:08,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:08,322 INFO L225 Difference]: With dead ends: 6078 [2021-11-07 01:23:08,322 INFO L226 Difference]: Without dead ends: 3146 [2021-11-07 01:23:08,328 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 940 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:23:08,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3146 states. [2021-11-07 01:23:08,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3146 to 3146. [2021-11-07 01:23:08,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3146 states, 3136 states have (on average 1.4081632653061225) internal successors, (4416), 3145 states have internal predecessors, (4416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:08,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 4416 transitions. [2021-11-07 01:23:08,468 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 4416 transitions. Word has length 238 [2021-11-07 01:23:08,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:08,470 INFO L470 AbstractCegarLoop]: Abstraction has 3146 states and 4416 transitions. [2021-11-07 01:23:08,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:08,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 4416 transitions. [2021-11-07 01:23:08,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-07 01:23:08,474 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:08,474 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:08,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:08,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:08,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:08,896 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:23:08,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:08,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1317187882, now seen corresponding path program 1 times [2021-11-07 01:23:08,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:08,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013153420] [2021-11-07 01:23:08,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:08,905 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:08,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:08,906 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:08,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:23:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:12,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 4497 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:23:12,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:13,792 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-07 01:23:13,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:15,239 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-07 01:23:15,239 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:15,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013153420] [2021-11-07 01:23:15,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013153420] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:23:15,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1921361801] [2021-11-07 01:23:15,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:15,239 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:23:15,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:23:15,241 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:23:15,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 01:23:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:17,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 4497 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:23:17,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:18,365 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-07 01:23:18,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:18,880 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-07 01:23:18,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1921361801] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:18,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:23:18,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 12 [2021-11-07 01:23:18,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328509252] [2021-11-07 01:23:18,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:23:18,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:18,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:23:18,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:23:18,884 INFO L87 Difference]: Start difference. First operand 3146 states and 4416 transitions. Second operand has 6 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:21,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:21,513 INFO L93 Difference]: Finished difference Result 6085 states and 8588 transitions. [2021-11-07 01:23:21,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:23:21,514 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 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 240 [2021-11-07 01:23:21,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:21,535 INFO L225 Difference]: With dead ends: 6085 [2021-11-07 01:23:21,535 INFO L226 Difference]: Without dead ends: 3145 [2021-11-07 01:23:21,545 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 946 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:23:21,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3145 states. [2021-11-07 01:23:21,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3145 to 2943. [2021-11-07 01:23:21,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2943 states, 2933 states have (on average 1.4118649846573474) internal successors, (4141), 2942 states have internal predecessors, (4141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:21,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2943 states to 2943 states and 4141 transitions. [2021-11-07 01:23:21,662 INFO L78 Accepts]: Start accepts. Automaton has 2943 states and 4141 transitions. Word has length 240 [2021-11-07 01:23:21,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:21,663 INFO L470 AbstractCegarLoop]: Abstraction has 2943 states and 4141 transitions. [2021-11-07 01:23:21,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:23:21,664 INFO L276 IsEmpty]: Start isEmpty. Operand 2943 states and 4141 transitions. [2021-11-07 01:23:21,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-07 01:23:21,667 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:21,668 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:23:21,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:21,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:22,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:23:22,086 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:23:22,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:22,087 INFO L85 PathProgramCache]: Analyzing trace with hash -849756897, now seen corresponding path program 1 times [2021-11-07 01:23:22,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:22,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130625899] [2021-11-07 01:23:22,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:22,093 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:22,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:22,096 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:22,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:23:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:25,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 4506 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:23:25,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:27,008 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-07 01:23:27,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:28,557 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-07 01:23:28,558 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:28,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130625899] [2021-11-07 01:23:28,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130625899] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:23:28,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [919238053] [2021-11-07 01:23:28,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:28,558 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:23:28,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:23:28,559 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:23:28,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:23:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:31,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 4506 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:23:31,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:31,893 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-07 01:23:31,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:32,328 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-07 01:23:32,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [919238053] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:32,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:23:32,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:23:32,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184411196] [2021-11-07 01:23:32,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:23:32,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:32,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:23:32,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:23:32,331 INFO L87 Difference]: Start difference. First operand 2943 states and 4141 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:19,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:19,271 INFO L93 Difference]: Finished difference Result 8019 states and 11397 transitions. [2021-11-07 01:24:19,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:24:19,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 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 243 [2021-11-07 01:24:19,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:19,311 INFO L225 Difference]: With dead ends: 8019 [2021-11-07 01:24:19,311 INFO L226 Difference]: Without dead ends: 5290 [2021-11-07 01:24:19,318 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 968 GetRequests, 961 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:24:19,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5290 states. [2021-11-07 01:24:19,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5290 to 4398. [2021-11-07 01:24:19,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4398 states, 4388 states have (on average 1.4291248860528714) internal successors, (6271), 4397 states have internal predecessors, (6271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:19,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4398 states to 4398 states and 6271 transitions. [2021-11-07 01:24:19,573 INFO L78 Accepts]: Start accepts. Automaton has 4398 states and 6271 transitions. Word has length 243 [2021-11-07 01:24:19,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:19,574 INFO L470 AbstractCegarLoop]: Abstraction has 4398 states and 6271 transitions. [2021-11-07 01:24:19,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:19,575 INFO L276 IsEmpty]: Start isEmpty. Operand 4398 states and 6271 transitions. [2021-11-07 01:24:19,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-07 01:24:19,580 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:19,580 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:24:19,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:19,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:19,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:19,995 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:24:19,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:19,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1483892262, now seen corresponding path program 1 times [2021-11-07 01:24:20,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:20,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502202350] [2021-11-07 01:24:20,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:20,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:20,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:20,006 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:20,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:24:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:23,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 4508 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:24:23,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:25,294 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-07 01:24:25,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:26,855 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-07 01:24:26,855 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:26,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502202350] [2021-11-07 01:24:26,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502202350] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:24:26,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1641177903] [2021-11-07 01:24:26,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:26,856 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:24:26,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:24:26,857 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:24:26,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 01:24:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:30,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 4508 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:24:30,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:30,770 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-07 01:24:30,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:31,361 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-07 01:24:31,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1641177903] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:31,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:24:31,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-07 01:24:31,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078935487] [2021-11-07 01:24:31,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:24:31,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:31,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:24:31,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:24:31,365 INFO L87 Difference]: Start difference. First operand 4398 states and 6271 transitions. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:31,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:31,608 INFO L93 Difference]: Finished difference Result 8583 states and 12289 transitions. [2021-11-07 01:24:31,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:24:31,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 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 245 [2021-11-07 01:24:31,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:31,642 INFO L225 Difference]: With dead ends: 8583 [2021-11-07 01:24:31,643 INFO L226 Difference]: Without dead ends: 4377 [2021-11-07 01:24:31,651 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 977 GetRequests, 968 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:24:31,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4377 states. [2021-11-07 01:24:31,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4377 to 4377. [2021-11-07 01:24:31,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4377 states, 4367 states have (on average 1.4282115869017633) internal successors, (6237), 4376 states have internal predecessors, (6237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:31,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4377 states to 4377 states and 6237 transitions. [2021-11-07 01:24:31,858 INFO L78 Accepts]: Start accepts. Automaton has 4377 states and 6237 transitions. Word has length 245 [2021-11-07 01:24:31,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:31,859 INFO L470 AbstractCegarLoop]: Abstraction has 4377 states and 6237 transitions. [2021-11-07 01:24:31,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:24:31,859 INFO L276 IsEmpty]: Start isEmpty. Operand 4377 states and 6237 transitions. [2021-11-07 01:24:31,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-07 01:24:31,865 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:31,866 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:24:31,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:32,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:32,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:24:32,279 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:24:32,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:32,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1273119426, now seen corresponding path program 1 times [2021-11-07 01:24:32,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:32,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568711889] [2021-11-07 01:24:32,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:32,284 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:32,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:32,285 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:32,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:24:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:36,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 4677 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:24:36,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:38,153 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-07 01:24:38,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-07 01:24:39,897 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:39,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568711889] [2021-11-07 01:24:39,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568711889] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:24:39,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [7068074] [2021-11-07 01:24:39,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:39,898 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:24:39,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:24:39,900 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:24:39,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:24:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:43,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 4677 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:24:43,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:45,558 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-07 01:24:45,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:47,227 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-07 01:24:47,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [7068074] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:47,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:24:47,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5, 5] total 18 [2021-11-07 01:24:47,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126893867] [2021-11-07 01:24:47,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:24:47,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:47,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:24:47,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:24:47,232 INFO L87 Difference]: Start difference. First operand 4377 states and 6237 transitions. Second operand has 12 states, 12 states have (on average 24.416666666666668) internal successors, (293), 12 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:55,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:55,681 INFO L93 Difference]: Finished difference Result 12717 states and 18222 transitions. [2021-11-07 01:25:55,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:25:55,683 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 24.416666666666668) internal successors, (293), 12 states have internal predecessors, (293), 0 states have call successors, (0), 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 287 [2021-11-07 01:25:55,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:55,734 INFO L225 Difference]: With dead ends: 12717 [2021-11-07 01:25:55,734 INFO L226 Difference]: Without dead ends: 8545 [2021-11-07 01:25:55,744 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1152 GetRequests, 1128 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2021-11-07 01:25:55,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8545 states. [2021-11-07 01:25:56,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8545 to 4377. [2021-11-07 01:25:56,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4377 states, 4367 states have (on average 1.4279825967483397) internal successors, (6236), 4376 states have internal predecessors, (6236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:56,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4377 states to 4377 states and 6236 transitions. [2021-11-07 01:25:56,076 INFO L78 Accepts]: Start accepts. Automaton has 4377 states and 6236 transitions. Word has length 287 [2021-11-07 01:25:56,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:56,077 INFO L470 AbstractCegarLoop]: Abstraction has 4377 states and 6236 transitions. [2021-11-07 01:25:56,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.416666666666668) internal successors, (293), 12 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:56,078 INFO L276 IsEmpty]: Start isEmpty. Operand 4377 states and 6236 transitions. [2021-11-07 01:25:56,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-11-07 01:25:56,084 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:56,084 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:56,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:56,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-07 01:25:56,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:56,503 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:25:56,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:56,504 INFO L85 PathProgramCache]: Analyzing trace with hash -424817894, now seen corresponding path program 1 times [2021-11-07 01:25:56,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:56,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95337264] [2021-11-07 01:25:56,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:56,509 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:56,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:56,511 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:56,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:26:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:01,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 4688 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:26:01,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:02,801 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-07 01:26:02,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:04,701 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-07 01:26:04,701 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:26:04,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95337264] [2021-11-07 01:26:04,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95337264] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:26:04,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [473169827] [2021-11-07 01:26:04,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:04,702 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:26:04,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:26:04,703 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:26:04,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 01:26:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:09,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 4688 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:26:09,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:10,272 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-07 01:26:10,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:11,260 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-07 01:26:11,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [473169827] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:26:11,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:26:11,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 14 [2021-11-07 01:26:11,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763727215] [2021-11-07 01:26:11,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:26:11,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:26:11,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:26:11,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:26:11,263 INFO L87 Difference]: Start difference. First operand 4377 states and 6236 transitions. Second operand has 8 states, 8 states have (on average 31.75) internal successors, (254), 8 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:12,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:26:12,188 INFO L93 Difference]: Finished difference Result 12642 states and 18120 transitions. [2021-11-07 01:26:12,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:26:12,190 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.75) internal successors, (254), 8 states have internal predecessors, (254), 0 states have call successors, (0), 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 289 [2021-11-07 01:26:12,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:26:12,210 INFO L225 Difference]: With dead ends: 12642 [2021-11-07 01:26:12,211 INFO L226 Difference]: Without dead ends: 8476 [2021-11-07 01:26:12,219 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1155 GetRequests, 1141 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:26:12,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8476 states. [2021-11-07 01:26:12,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8476 to 4377. [2021-11-07 01:26:12,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4377 states, 4367 states have (on average 1.4277536065949163) internal successors, (6235), 4376 states have internal predecessors, (6235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:12,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4377 states to 4377 states and 6235 transitions. [2021-11-07 01:26:12,552 INFO L78 Accepts]: Start accepts. Automaton has 4377 states and 6235 transitions. Word has length 289 [2021-11-07 01:26:12,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:26:12,553 INFO L470 AbstractCegarLoop]: Abstraction has 4377 states and 6235 transitions. [2021-11-07 01:26:12,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.75) internal successors, (254), 8 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:12,554 INFO L276 IsEmpty]: Start isEmpty. Operand 4377 states and 6235 transitions. [2021-11-07 01:26:12,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-11-07 01:26:12,556 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:26:12,557 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:26:12,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:26:12,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:26:12,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:26:12,977 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:26:12,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:26:12,977 INFO L85 PathProgramCache]: Analyzing trace with hash 115806974, now seen corresponding path program 1 times [2021-11-07 01:26:12,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:26:12,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285057405] [2021-11-07 01:26:12,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:12,983 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:26:12,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:26:12,984 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:26:12,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:26:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:18,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 4699 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:26:18,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:19,804 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-07 01:26:19,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:21,538 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-07 01:26:21,538 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:26:21,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285057405] [2021-11-07 01:26:21,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285057405] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:26:21,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [396127663] [2021-11-07 01:26:21,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:21,539 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:26:21,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:26:21,540 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:26:21,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-07 01:26:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:31,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 4699 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:26:31,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:33,143 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-07 01:26:33,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-07 01:26:34,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [396127663] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:26:34,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209932362] [2021-11-07 01:26:34,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:34,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:26:34,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:26:34,664 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:26:34,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-07 01:26:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:47,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 4699 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:26:47,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:48,544 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-11-07 01:26:48,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-11-07 01:26:49,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209932362] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:26:49,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:26:49,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5, 5, 5] total 10 [2021-11-07 01:26:49,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113391210] [2021-11-07 01:26:49,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:26:49,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:26:49,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:26:49,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:26:49,057 INFO L87 Difference]: Start difference. First operand 4377 states and 6235 transitions. Second operand has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:49,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:26:49,885 INFO L93 Difference]: Finished difference Result 12167 states and 17471 transitions. [2021-11-07 01:26:49,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:26:49,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 0 states have call successors, (0), 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 291 [2021-11-07 01:26:49,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:26:49,917 INFO L225 Difference]: With dead ends: 12167 [2021-11-07 01:26:49,917 INFO L226 Difference]: Without dead ends: 12151 [2021-11-07 01:26:49,923 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1740 GetRequests, 1732 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:26:49,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12151 states. [2021-11-07 01:26:50,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12151 to 4361. [2021-11-07 01:26:50,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4361 states, 4359 states have (on average 1.424868089011241) internal successors, (6211), 4360 states have internal predecessors, (6211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:50,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4361 states to 4361 states and 6211 transitions. [2021-11-07 01:26:50,383 INFO L78 Accepts]: Start accepts. Automaton has 4361 states and 6211 transitions. Word has length 291 [2021-11-07 01:26:50,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:26:50,384 INFO L470 AbstractCegarLoop]: Abstraction has 4361 states and 6211 transitions. [2021-11-07 01:26:50,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:50,385 INFO L276 IsEmpty]: Start isEmpty. Operand 4361 states and 6211 transitions. [2021-11-07 01:26:50,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-11-07 01:26:50,389 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:26:50,389 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:26:50,602 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forcibly destroying the process [2021-11-07 01:26:50,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 137 [2021-11-07 01:26:50,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-07 01:26:50,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-07 01:26:51,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:26:51,082 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:26:51,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:26:51,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1607260706, now seen corresponding path program 1 times [2021-11-07 01:26:51,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:26:51,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811637011] [2021-11-07 01:26:51,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:51,089 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:26:51,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:26:51,090 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:26:51,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-07 01:26:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:56,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 4720 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:26:56,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:58,359 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-07 01:26:58,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:00,218 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-07 01:27:00,218 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:00,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811637011] [2021-11-07 01:27:00,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811637011] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:27:00,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1398229122] [2021-11-07 01:27:00,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:00,220 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:27:00,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:27:00,221 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:27:00,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-07 01:27:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:11,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 4720 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:27:11,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:12,830 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-07 01:27:12,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:14,428 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-07 01:27:14,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1398229122] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:27:14,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145081303] [2021-11-07 01:27:14,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:14,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:27:14,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:27:14,430 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:27:14,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-07 01:27:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:28,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 4720 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:27:28,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:29,007 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-07 01:27:29,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:29,720 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-07 01:27:29,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145081303] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:29,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:27:29,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5, 5, 5] total 10 [2021-11-07 01:27:29,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106805286] [2021-11-07 01:27:29,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:27:29,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:29,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:27:29,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:27:29,723 INFO L87 Difference]: Start difference. First operand 4361 states and 6211 transitions. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:30,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:30,023 INFO L93 Difference]: Finished difference Result 8523 states and 12190 transitions. [2021-11-07 01:27:30,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:27:30,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 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 300 [2021-11-07 01:27:30,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:30,036 INFO L225 Difference]: With dead ends: 8523 [2021-11-07 01:27:30,037 INFO L226 Difference]: Without dead ends: 4376 [2021-11-07 01:27:30,046 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1794 GetRequests, 1786 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:27:30,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4376 states. [2021-11-07 01:27:30,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4376 to 4376. [2021-11-07 01:27:30,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 4374 states have (on average 1.4243255601280294) internal successors, (6230), 4375 states have internal predecessors, (6230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:30,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 6230 transitions. [2021-11-07 01:27:30,465 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 6230 transitions. Word has length 300 [2021-11-07 01:27:30,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:30,466 INFO L470 AbstractCegarLoop]: Abstraction has 4376 states and 6230 transitions. [2021-11-07 01:27:30,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:30,467 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 6230 transitions. [2021-11-07 01:27:30,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-11-07 01:27:30,471 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:30,471 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:30,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:30,886 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forcibly destroying the process [2021-11-07 01:27:30,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:30,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2021-11-07 01:27:31,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:27:31,117 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:27:31,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:31,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1484027250, now seen corresponding path program 1 times [2021-11-07 01:27:31,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:31,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550681131] [2021-11-07 01:27:31,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:31,122 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:31,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:31,123 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:31,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-07 01:27:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:37,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 4768 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:27:37,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:38,748 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-11-07 01:27:38,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:40,630 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-11-07 01:27:40,630 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:40,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550681131] [2021-11-07 01:27:40,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550681131] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:27:40,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1619362597] [2021-11-07 01:27:40,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:40,630 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:27:40,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:27:40,631 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:27:40,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-07 01:27:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:52,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 4768 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:27:52,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:53,691 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-11-07 01:27:53,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:55,281 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-11-07 01:27:55,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1619362597] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:27:55,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378605235] [2021-11-07 01:27:55,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:55,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:27:55,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:27:55,283 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:27:55,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-07 01:28:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:14,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 4768 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:28:14,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:16,725 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-11-07 01:28:16,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-11-07 01:28:18,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378605235] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:28:18,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:28:18,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 10 [2021-11-07 01:28:18,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257116166] [2021-11-07 01:28:18,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:28:18,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:18,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:28:18,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:28:18,805 INFO L87 Difference]: Start difference. First operand 4376 states and 6230 transitions. Second operand has 10 states, 10 states have (on average 27.6) internal successors, (276), 10 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:35,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:35,991 INFO L93 Difference]: Finished difference Result 8886 states and 12749 transitions. [2021-11-07 01:28:35,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:28:35,992 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 27.6) internal successors, (276), 10 states have internal predecessors, (276), 0 states have call successors, (0), 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 316 [2021-11-07 01:28:35,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:36,001 INFO L225 Difference]: With dead ends: 8886 [2021-11-07 01:28:36,001 INFO L226 Difference]: Without dead ends: 4532 [2021-11-07 01:28:36,011 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1891 GetRequests, 1882 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:28:36,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4532 states. [2021-11-07 01:28:36,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4532 to 4532. [2021-11-07 01:28:36,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4532 states, 4530 states have (on average 1.4183222958057395) internal successors, (6425), 4531 states have internal predecessors, (6425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:36,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4532 states to 4532 states and 6425 transitions. [2021-11-07 01:28:36,391 INFO L78 Accepts]: Start accepts. Automaton has 4532 states and 6425 transitions. Word has length 316 [2021-11-07 01:28:36,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:36,391 INFO L470 AbstractCegarLoop]: Abstraction has 4532 states and 6425 transitions. [2021-11-07 01:28:36,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 27.6) internal successors, (276), 10 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:36,392 INFO L276 IsEmpty]: Start isEmpty. Operand 4532 states and 6425 transitions. [2021-11-07 01:28:36,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2021-11-07 01:28:36,398 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:36,398 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:36,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:36,818 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forcibly destroying the process [2021-11-07 01:28:36,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:36,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:37,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:28:37,090 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:28:37,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:37,091 INFO L85 PathProgramCache]: Analyzing trace with hash 345886322, now seen corresponding path program 2 times [2021-11-07 01:28:37,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:37,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670678642] [2021-11-07 01:28:37,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:28:37,097 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:37,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:37,098 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:37,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-07 01:29:59,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:29:59,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:30:00,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 5158 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:30:00,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:01,680 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-11-07 01:30:01,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:02,796 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-11-07 01:30:02,796 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:30:02,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670678642] [2021-11-07 01:30:02,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670678642] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:30:02,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1740115864] [2021-11-07 01:30:02,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:30:02,797 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:30:02,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:30:02,799 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:30:02,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-11-07 01:34:04,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:34:04,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:34:04,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 5158 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:34:04,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-11-07 01:34:05,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:06,870 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-11-07 01:34:06,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1740115864] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:34:06,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580570205] [2021-11-07 01:34:06,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:34:06,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:34:06,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:34:06,873 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:34:06,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3585c30-0389-4580-8dd2-20dc6ae4390f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process