./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:04:43,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:04:43,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:04:43,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:04:43,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:04:43,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:04:43,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:04:43,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:04:43,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:04:43,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:04:43,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:04:43,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:04:43,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:04:43,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:04:43,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:04:43,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:04:43,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:04:43,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:04:43,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:04:43,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:04:43,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:04:43,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:04:43,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:04:43,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:04:43,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:04:43,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:04:43,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:04:43,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:04:43,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:04:43,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:04:43,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:04:43,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:04:43,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:04:43,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:04:43,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:04:43,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:04:43,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:04:43,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:04:43,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:04:43,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:04:43,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:04:43,168 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-07 00:04:43,192 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:04:43,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:04:43,193 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:04:43,193 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:04:43,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:04:43,194 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:04:43,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:04:43,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:04:43,194 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:04:43,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:04:43,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:04:43,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:04:43,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:04:43,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:04:43,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:04:43,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:04:43,195 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:04:43,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:04:43,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:04:43,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:04:43,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:04:43,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:04:43,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:04:43,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:04:43,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:04:43,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:04:43,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:04:43,196 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:04:43,196 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:04:43,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:04:43,197 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:04:43,197 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 [2021-12-07 00:04:43,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:04:43,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:04:43,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:04:43,418 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:04:43,419 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:04:43,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-12-07 00:04:43,462 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/data/6db461037/982cd422150c47a2a069f2168f09c228/FLAG28250b897 [2021-12-07 00:04:44,033 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:04:44,034 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-12-07 00:04:44,058 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/data/6db461037/982cd422150c47a2a069f2168f09c228/FLAG28250b897 [2021-12-07 00:04:44,497 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/data/6db461037/982cd422150c47a2a069f2168f09c228 [2021-12-07 00:04:44,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:04:44,501 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:04:44,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:04:44,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:04:44,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:04:44,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:04:44" (1/1) ... [2021-12-07 00:04:44,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ea8de1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:44, skipping insertion in model container [2021-12-07 00:04:44,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:04:44" (1/1) ... [2021-12-07 00:04:44,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:04:44,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:04:44,812 WARN L230 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_ec26ede2-1b67-4e53-b200-1251b87ba9ea/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2021-12-07 00:04:44,818 WARN L230 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_ec26ede2-1b67-4e53-b200-1251b87ba9ea/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2021-12-07 00:04:45,705 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:45,706 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:45,706 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:45,707 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:45,708 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:45,717 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:45,718 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:45,719 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:45,720 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:45,721 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:45,722 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:45,722 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:45,723 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,088 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-07 00:04:46,089 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-07 00:04:46,090 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-07 00:04:46,090 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-07 00:04:46,091 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-07 00:04:46,092 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-07 00:04:46,092 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-07 00:04:46,093 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-07 00:04:46,093 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-07 00:04:46,094 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-07 00:04:46,240 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-07 00:04:46,468 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,468 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,484 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,485 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,490 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,490 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,501 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,501 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,502 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,502 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,502 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,503 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,503 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:04:46,548 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:04:46,558 WARN L230 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_ec26ede2-1b67-4e53-b200-1251b87ba9ea/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2021-12-07 00:04:46,559 WARN L230 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_ec26ede2-1b67-4e53-b200-1251b87ba9ea/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2021-12-07 00:04:46,594 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,594 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,594 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,595 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,595 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,599 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,600 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,600 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,601 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,601 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,602 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,602 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,602 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,622 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-07 00:04:46,622 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-07 00:04:46,623 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-07 00:04:46,623 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-07 00:04:46,624 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-07 00:04:46,624 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-07 00:04:46,624 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-07 00:04:46,625 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-07 00:04:46,625 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-07 00:04:46,625 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-07 00:04:46,638 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-07 00:04:46,695 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,695 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,701 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,701 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,703 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,703 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,709 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,710 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,710 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,710 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,710 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,711 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,711 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:04:46,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:04:46,919 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:04:46,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:46 WrapperNode [2021-12-07 00:04:46,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:04:46,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:04:46,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:04:46,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:04:46,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:46" (1/1) ... [2021-12-07 00:04:46,993 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:46" (1/1) ... [2021-12-07 00:04:47,049 INFO L137 Inliner]: procedures = 774, calls = 2455, calls flagged for inlining = 69, calls inlined = 20, statements flattened = 838 [2021-12-07 00:04:47,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:04:47,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:04:47,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:04:47,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:04:47,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:46" (1/1) ... [2021-12-07 00:04:47,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:46" (1/1) ... [2021-12-07 00:04:47,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:46" (1/1) ... [2021-12-07 00:04:47,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:46" (1/1) ... [2021-12-07 00:04:47,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:46" (1/1) ... [2021-12-07 00:04:47,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:46" (1/1) ... [2021-12-07 00:04:47,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:46" (1/1) ... [2021-12-07 00:04:47,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:04:47,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:04:47,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:04:47,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:04:47,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:46" (1/1) ... [2021-12-07 00:04:47,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:04:47,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:04:47,154 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:04:47,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:04:47,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-07 00:04:47,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 00:04:47,192 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-07 00:04:47,192 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-07 00:04:47,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-07 00:04:47,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-07 00:04:47,192 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-12-07 00:04:47,192 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-12-07 00:04:47,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-07 00:04:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:04:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-07 00:04:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:04:47,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:04:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-07 00:04:47,193 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-07 00:04:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-07 00:04:47,193 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-07 00:04:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 00:04:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-07 00:04:47,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-07 00:04:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-07 00:04:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-07 00:04:47,193 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-07 00:04:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_find [2021-12-07 00:04:47,194 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_find [2021-12-07 00:04:47,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 00:04:47,194 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2021-12-07 00:04:47,194 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2021-12-07 00:04:47,194 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-12-07 00:04:47,194 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-12-07 00:04:47,194 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2021-12-07 00:04:47,194 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2021-12-07 00:04:47,194 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2021-12-07 00:04:47,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2021-12-07 00:04:47,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 00:04:47,194 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-12-07 00:04:47,194 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-12-07 00:04:47,194 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2021-12-07 00:04:47,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2021-12-07 00:04:47,195 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2021-12-07 00:04:47,195 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2021-12-07 00:04:47,195 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2021-12-07 00:04:47,195 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2021-12-07 00:04:47,195 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-07 00:04:47,195 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-07 00:04:47,195 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-12-07 00:04:47,195 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-12-07 00:04:47,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-07 00:04:47,195 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-07 00:04:47,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-07 00:04:47,195 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-07 00:04:47,195 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-07 00:04:47,196 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2021-12-07 00:04:47,196 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2021-12-07 00:04:47,196 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-07 00:04:47,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-07 00:04:47,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:04:47,434 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:04:47,436 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:04:47,541 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2021-12-07 00:04:47,574 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-12-07 00:04:47,742 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !true; [2021-12-07 00:04:48,293 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:04:48,302 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:04:48,302 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-12-07 00:04:48,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:04:48 BoogieIcfgContainer [2021-12-07 00:04:48,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:04:48,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:04:48,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:04:48,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:04:48,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:04:44" (1/3) ... [2021-12-07 00:04:48,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a3befd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:04:48, skipping insertion in model container [2021-12-07 00:04:48,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:04:46" (2/3) ... [2021-12-07 00:04:48,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a3befd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:04:48, skipping insertion in model container [2021-12-07 00:04:48,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:04:48" (3/3) ... [2021-12-07 00:04:48,313 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_find_harness.i [2021-12-07 00:04:48,318 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:04:48,318 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:04:48,368 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:04:48,374 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=PETRI_NET, 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 [2021-12-07 00:04:48,375 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:04:48,399 INFO L276 IsEmpty]: Start isEmpty. Operand has 246 states, 157 states have (on average 1.2101910828025477) internal successors, (190), 155 states have internal predecessors, (190), 68 states have call successors, (68), 22 states have call predecessors, (68), 22 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-12-07 00:04:48,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-07 00:04:48,414 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:04:48,415 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:04:48,416 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:04:48,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:04:48,421 INFO L85 PathProgramCache]: Analyzing trace with hash 2109277801, now seen corresponding path program 1 times [2021-12-07 00:04:48,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:04:48,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107666687] [2021-12-07 00:04:48,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:48,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:04:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:48,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:04:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:48,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:04:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:48,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:04:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:48,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:04:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:48,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:04:48,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:04:48,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107666687] [2021-12-07 00:04:48,956 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-07 00:04:48,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148321449] [2021-12-07 00:04:48,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:48,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:04:48,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:04:48,958 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:04:48,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 00:04:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:49,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 2687 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-07 00:04:49,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:04:49,558 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2021-12-07 00:04:49,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:04:49,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148321449] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:04:49,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:04:49,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:04:49,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031183124] [2021-12-07 00:04:49,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:04:49,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 00:04:49,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:04:49,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 00:04:49,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:04:49,596 INFO L87 Difference]: Start difference. First operand has 246 states, 157 states have (on average 1.2101910828025477) internal successors, (190), 155 states have internal predecessors, (190), 68 states have call successors, (68), 22 states have call predecessors, (68), 22 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-07 00:04:49,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:04:49,635 INFO L93 Difference]: Finished difference Result 486 states and 686 transitions. [2021-12-07 00:04:49,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 00:04:49,637 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 182 [2021-12-07 00:04:49,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:04:49,645 INFO L225 Difference]: With dead ends: 486 [2021-12-07 00:04:49,645 INFO L226 Difference]: Without dead ends: 239 [2021-12-07 00:04:49,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:04:49,653 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:04:49,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:04:49,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-12-07 00:04:49,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-12-07 00:04:49,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 148 states have (on average 1.195945945945946) internal successors, (177), 149 states have internal predecessors, (177), 68 states have call successors, (68), 22 states have call predecessors, (68), 22 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2021-12-07 00:04:49,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 312 transitions. [2021-12-07 00:04:49,708 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 312 transitions. Word has length 182 [2021-12-07 00:04:49,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:04:49,709 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 312 transitions. [2021-12-07 00:04:49,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-07 00:04:49,710 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 312 transitions. [2021-12-07 00:04:49,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-07 00:04:49,713 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:04:49,714 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:04:49,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:04:49,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-07 00:04:49,916 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:04:49,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:04:49,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1716640621, now seen corresponding path program 1 times [2021-12-07 00:04:49,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:04:49,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674495848] [2021-12-07 00:04:49,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:49,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:04:50,066 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:04:50,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211498816] [2021-12-07 00:04:50,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:50,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:04:50,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:04:50,067 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:04:50,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 00:04:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:50,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 2687 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:04:50,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:04:50,665 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-12-07 00:04:50,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:04:50,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:04:50,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674495848] [2021-12-07 00:04:50,666 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:04:50,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211498816] [2021-12-07 00:04:50,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211498816] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:04:50,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:04:50,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:04:50,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955996015] [2021-12-07 00:04:50,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:04:50,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:04:50,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:04:50,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:04:50,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:04:50,670 INFO L87 Difference]: Start difference. First operand 239 states and 312 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-12-07 00:04:50,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:04:50,842 INFO L93 Difference]: Finished difference Result 464 states and 608 transitions. [2021-12-07 00:04:50,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:04:50,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 182 [2021-12-07 00:04:50,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:04:50,846 INFO L225 Difference]: With dead ends: 464 [2021-12-07 00:04:50,846 INFO L226 Difference]: Without dead ends: 246 [2021-12-07 00:04:50,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:04:50,848 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 325 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:04:50,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 1041 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:04:50,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-12-07 00:04:50,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2021-12-07 00:04:50,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 153 states have (on average 1.196078431372549) internal successors, (183), 155 states have internal predecessors, (183), 69 states have call successors, (69), 22 states have call predecessors, (69), 23 states have return successors, (70), 68 states have call predecessors, (70), 68 states have call successors, (70) [2021-12-07 00:04:50,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 322 transitions. [2021-12-07 00:04:50,874 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 322 transitions. Word has length 182 [2021-12-07 00:04:50,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:04:50,875 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 322 transitions. [2021-12-07 00:04:50,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-12-07 00:04:50,875 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 322 transitions. [2021-12-07 00:04:50,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-07 00:04:50,878 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:04:50,878 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 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] [2021-12-07 00:04:50,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 00:04:51,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:04:51,080 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:04:51,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:04:51,081 INFO L85 PathProgramCache]: Analyzing trace with hash 421077933, now seen corresponding path program 1 times [2021-12-07 00:04:51,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:04:51,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199544653] [2021-12-07 00:04:51,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:51,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:04:51,160 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:04:51,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [784872765] [2021-12-07 00:04:51,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:51,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:04:51,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:04:51,161 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:04:51,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 00:04:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:51,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-07 00:04:51,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:04:51,703 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2021-12-07 00:04:51,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:04:51,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:04:51,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199544653] [2021-12-07 00:04:51,704 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:04:51,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784872765] [2021-12-07 00:04:51,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784872765] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:04:51,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:04:51,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-07 00:04:51,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529338571] [2021-12-07 00:04:51,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:04:51,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:04:51,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:04:51,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:04:51,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:04:51,706 INFO L87 Difference]: Start difference. First operand 246 states and 322 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-07 00:04:51,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:04:51,912 INFO L93 Difference]: Finished difference Result 404 states and 531 transitions. [2021-12-07 00:04:51,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:04:51,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 182 [2021-12-07 00:04:51,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:04:51,915 INFO L225 Difference]: With dead ends: 404 [2021-12-07 00:04:51,916 INFO L226 Difference]: Without dead ends: 239 [2021-12-07 00:04:51,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:04:51,917 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 321 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:04:51,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 1528 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:04:51,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-12-07 00:04:51,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-12-07 00:04:51,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 148 states have (on average 1.1891891891891893) internal successors, (176), 149 states have internal predecessors, (176), 68 states have call successors, (68), 22 states have call predecessors, (68), 22 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2021-12-07 00:04:51,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 311 transitions. [2021-12-07 00:04:51,933 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 311 transitions. Word has length 182 [2021-12-07 00:04:51,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:04:51,933 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 311 transitions. [2021-12-07 00:04:51,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-07 00:04:51,934 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 311 transitions. [2021-12-07 00:04:51,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-07 00:04:51,936 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:04:51,936 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:04:51,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 00:04:52,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:04:52,138 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:04:52,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:04:52,139 INFO L85 PathProgramCache]: Analyzing trace with hash -238453589, now seen corresponding path program 1 times [2021-12-07 00:04:52,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:04:52,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761466601] [2021-12-07 00:04:52,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:52,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:04:52,308 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:04:52,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1080381224] [2021-12-07 00:04:52,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:52,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:04:52,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:04:52,309 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:04:52,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 00:04:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:52,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 2702 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-07 00:04:52,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:04:52,774 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-12-07 00:04:52,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:04:52,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:04:52,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761466601] [2021-12-07 00:04:52,774 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:04:52,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080381224] [2021-12-07 00:04:52,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080381224] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:04:52,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:04:52,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:04:52,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405009955] [2021-12-07 00:04:52,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:04:52,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:04:52,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:04:52,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:04:52,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:04:52,776 INFO L87 Difference]: Start difference. First operand 239 states and 311 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-07 00:04:52,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:04:52,800 INFO L93 Difference]: Finished difference Result 474 states and 616 transitions. [2021-12-07 00:04:52,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:04:52,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 182 [2021-12-07 00:04:52,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:04:52,802 INFO L225 Difference]: With dead ends: 474 [2021-12-07 00:04:52,802 INFO L226 Difference]: Without dead ends: 244 [2021-12-07 00:04:52,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:04:52,809 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 2 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:04:52,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1228 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:04:52,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-12-07 00:04:52,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-12-07 00:04:52,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 152 states have (on average 1.1842105263157894) internal successors, (180), 153 states have internal predecessors, (180), 68 states have call successors, (68), 22 states have call predecessors, (68), 23 states have return successors, (68), 68 states have call predecessors, (68), 67 states have call successors, (68) [2021-12-07 00:04:52,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 316 transitions. [2021-12-07 00:04:52,825 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 316 transitions. Word has length 182 [2021-12-07 00:04:52,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:04:52,825 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 316 transitions. [2021-12-07 00:04:52,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-07 00:04:52,826 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 316 transitions. [2021-12-07 00:04:52,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-07 00:04:52,828 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:04:52,828 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:04:52,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 00:04:53,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:04:53,030 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:04:53,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:04:53,031 INFO L85 PathProgramCache]: Analyzing trace with hash -168770197, now seen corresponding path program 1 times [2021-12-07 00:04:53,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:04:53,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723731525] [2021-12-07 00:04:53,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:53,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:04:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:04:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:04:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:04:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:04:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:04:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:04:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:04:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:04:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:04:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-07 00:04:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:04:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:04:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-07 00:04:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:04:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-07 00:04:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-07 00:04:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-07 00:04:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-07 00:04:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:04:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:04:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:04:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-07 00:04:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-07 00:04:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-07 00:04:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-07 00:04:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-07 00:04:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-07 00:04:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-07 00:04:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-07 00:04:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-07 00:04:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,750 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2021-12-07 00:04:53,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:04:53,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723731525] [2021-12-07 00:04:53,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723731525] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:04:53,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206959707] [2021-12-07 00:04:53,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:53,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:04:53,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:04:53,752 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:04:53,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 00:04:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:54,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 2710 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-07 00:04:54,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:04:54,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-07 00:04:54,593 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-12-07 00:04:54,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:04:54,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206959707] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:04:54,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:04:54,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 21 [2021-12-07 00:04:54,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764774706] [2021-12-07 00:04:54,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:04:54,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 00:04:54,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:04:54,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 00:04:54,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-12-07 00:04:54,595 INFO L87 Difference]: Start difference. First operand 244 states and 316 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2021-12-07 00:04:54,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:04:54,683 INFO L93 Difference]: Finished difference Result 474 states and 611 transitions. [2021-12-07 00:04:54,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:04:54,683 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 194 [2021-12-07 00:04:54,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:04:54,685 INFO L225 Difference]: With dead ends: 474 [2021-12-07 00:04:54,685 INFO L226 Difference]: Without dead ends: 248 [2021-12-07 00:04:54,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2021-12-07 00:04:54,687 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 35 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:04:54,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 1679 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 75 Unchecked, 0.1s Time] [2021-12-07 00:04:54,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-12-07 00:04:54,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2021-12-07 00:04:54,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 156 states have (on average 1.1794871794871795) internal successors, (184), 156 states have internal predecessors, (184), 68 states have call successors, (68), 23 states have call predecessors, (68), 23 states have return successors, (68), 68 states have call predecessors, (68), 67 states have call successors, (68) [2021-12-07 00:04:54,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 320 transitions. [2021-12-07 00:04:54,700 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 320 transitions. Word has length 194 [2021-12-07 00:04:54,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:04:54,700 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 320 transitions. [2021-12-07 00:04:54,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2021-12-07 00:04:54,701 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 320 transitions. [2021-12-07 00:04:54,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-07 00:04:54,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:04:54,702 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 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] [2021-12-07 00:04:54,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 00:04:54,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:04:54,903 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:04:54,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:04:54,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1760895517, now seen corresponding path program 1 times [2021-12-07 00:04:54,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:04:54,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27338714] [2021-12-07 00:04:54,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:54,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:04:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:04:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:04:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:04:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:04:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:04:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:04:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:04:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:04:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:04:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-07 00:04:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:04:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:04:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:04:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:04:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-07 00:04:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:04:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-07 00:04:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-07 00:04:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-07 00:04:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:04:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:04:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:04:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:04:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-07 00:04:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-07 00:04:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-07 00:04:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-07 00:04:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-07 00:04:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-07 00:04:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-07 00:04:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-07 00:04:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,398 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-12-07 00:04:55,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:04:55,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27338714] [2021-12-07 00:04:55,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27338714] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:04:55,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065273275] [2021-12-07 00:04:55,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:04:55,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:04:55,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:04:55,399 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:04:55,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 00:04:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:55,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 00:04:55,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:04:56,950 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= 0 (select (select |c_#memory_$Pointer$.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset)))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true [2021-12-07 00:05:04,938 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-12-07 00:05:04,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:04,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065273275] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:04,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:05:04,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2021-12-07 00:05:04,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333380217] [2021-12-07 00:05:04,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:04,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:05:04,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:05:04,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:05:04,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=175, Unknown=3, NotChecked=26, Total=240 [2021-12-07 00:05:04,940 INFO L87 Difference]: Start difference. First operand 248 states and 320 transitions. Second operand has 8 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) [2021-12-07 00:05:05,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:05,094 INFO L93 Difference]: Finished difference Result 476 states and 619 transitions. [2021-12-07 00:05:05,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:05:05,095 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) Word has length 200 [2021-12-07 00:05:05,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:05,097 INFO L225 Difference]: With dead ends: 476 [2021-12-07 00:05:05,097 INFO L226 Difference]: Without dead ends: 251 [2021-12-07 00:05:05,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=51, Invalid=222, Unknown=3, NotChecked=30, Total=306 [2021-12-07 00:05:05,098 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 5 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 429 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:05,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 1668 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 429 Unchecked, 0.1s Time] [2021-12-07 00:05:05,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-12-07 00:05:05,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 250. [2021-12-07 00:05:05,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 158 states have (on average 1.1772151898734178) internal successors, (186), 157 states have internal predecessors, (186), 68 states have call successors, (68), 24 states have call predecessors, (68), 23 states have return successors, (68), 68 states have call predecessors, (68), 67 states have call successors, (68) [2021-12-07 00:05:05,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 322 transitions. [2021-12-07 00:05:05,110 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 322 transitions. Word has length 200 [2021-12-07 00:05:05,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:05,110 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 322 transitions. [2021-12-07 00:05:05,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) [2021-12-07 00:05:05,111 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 322 transitions. [2021-12-07 00:05:05,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-12-07 00:05:05,112 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:05,112 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 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] [2021-12-07 00:05:05,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-07 00:05:05,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-07 00:05:05,313 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:05,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:05,314 INFO L85 PathProgramCache]: Analyzing trace with hash -661330404, now seen corresponding path program 1 times [2021-12-07 00:05:05,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:05:05,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165681656] [2021-12-07 00:05:05,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:05,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:05:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:05:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:05:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:05:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:05:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:05:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:05:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-07 00:05:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:05:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:05:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:05:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-07 00:05:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-07 00:05:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:05:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-07 00:05:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-07 00:05:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:05:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-07 00:05:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-07 00:05:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-07 00:05:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-07 00:05:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-07 00:05:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-07 00:05:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-07 00:05:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-07 00:05:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-07 00:05:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:05,777 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2021-12-07 00:05:05,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:05:05,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165681656] [2021-12-07 00:05:05,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165681656] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:05,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:05,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-07 00:05:05,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666023617] [2021-12-07 00:05:05,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:05,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:05:05,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:05:05,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:05:05,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:05:05,780 INFO L87 Difference]: Start difference. First operand 250 states and 322 transitions. Second operand has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (32), 5 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-07 00:05:06,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:06,440 INFO L93 Difference]: Finished difference Result 408 states and 531 transitions. [2021-12-07 00:05:06,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:05:06,441 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (32), 5 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 205 [2021-12-07 00:05:06,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:06,443 INFO L225 Difference]: With dead ends: 408 [2021-12-07 00:05:06,443 INFO L226 Difference]: Without dead ends: 262 [2021-12-07 00:05:06,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-12-07 00:05:06,445 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 332 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:06,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 888 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:05:06,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-12-07 00:05:06,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 252. [2021-12-07 00:05:06,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 159 states have (on average 1.1761006289308176) internal successors, (187), 159 states have internal predecessors, (187), 68 states have call successors, (68), 24 states have call predecessors, (68), 24 states have return successors, (70), 68 states have call predecessors, (70), 67 states have call successors, (70) [2021-12-07 00:05:06,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 325 transitions. [2021-12-07 00:05:06,459 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 325 transitions. Word has length 205 [2021-12-07 00:05:06,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:06,459 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 325 transitions. [2021-12-07 00:05:06,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (32), 5 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-07 00:05:06,460 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 325 transitions. [2021-12-07 00:05:06,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-07 00:05:06,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:06,461 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:05:06,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 00:05:06,461 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:06,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:06,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1796534111, now seen corresponding path program 1 times [2021-12-07 00:05:06,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:05:06,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483545609] [2021-12-07 00:05:06,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:06,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:05:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:05:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:05:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:05:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:05:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:05:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:05:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-07 00:05:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:05:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:05:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:05:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-07 00:05:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-07 00:05:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:05:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-07 00:05:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-07 00:05:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:05:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-07 00:05:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-07 00:05:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-07 00:05:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-07 00:05:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-07 00:05:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:07,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-07 00:05:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:07,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-07 00:05:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:07,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-07 00:05:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:07,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:07,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-07 00:05:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:07,098 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2021-12-07 00:05:07,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:05:07,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483545609] [2021-12-07 00:05:07,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483545609] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:07,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:07,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-07 00:05:07,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568678980] [2021-12-07 00:05:07,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:07,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-07 00:05:07,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:05:07,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-07 00:05:07,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:05:07,100 INFO L87 Difference]: Start difference. First operand 252 states and 325 transitions. Second operand has 16 states, 14 states have (on average 5.5) internal successors, (77), 12 states have internal predecessors, (77), 6 states have call successors, (33), 6 states have call predecessors, (33), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2021-12-07 00:05:08,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:08,280 INFO L93 Difference]: Finished difference Result 424 states and 554 transitions. [2021-12-07 00:05:08,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-07 00:05:08,280 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.5) internal successors, (77), 12 states have internal predecessors, (77), 6 states have call successors, (33), 6 states have call predecessors, (33), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) Word has length 210 [2021-12-07 00:05:08,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:08,282 INFO L225 Difference]: With dead ends: 424 [2021-12-07 00:05:08,282 INFO L226 Difference]: Without dead ends: 269 [2021-12-07 00:05:08,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2021-12-07 00:05:08,284 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 372 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 2148 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 2464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 2148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:08,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 1580 Invalid, 2464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 2148 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-07 00:05:08,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-12-07 00:05:08,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 255. [2021-12-07 00:05:08,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 161 states have (on average 1.173913043478261) internal successors, (189), 162 states have internal predecessors, (189), 68 states have call successors, (68), 24 states have call predecessors, (68), 25 states have return successors, (73), 68 states have call predecessors, (73), 67 states have call successors, (73) [2021-12-07 00:05:08,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 330 transitions. [2021-12-07 00:05:08,297 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 330 transitions. Word has length 210 [2021-12-07 00:05:08,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:08,298 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 330 transitions. [2021-12-07 00:05:08,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.5) internal successors, (77), 12 states have internal predecessors, (77), 6 states have call successors, (33), 6 states have call predecessors, (33), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2021-12-07 00:05:08,298 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 330 transitions. [2021-12-07 00:05:08,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-12-07 00:05:08,300 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:08,300 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:05:08,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 00:05:08,300 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:08,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:08,300 INFO L85 PathProgramCache]: Analyzing trace with hash -130056786, now seen corresponding path program 2 times [2021-12-07 00:05:08,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:05:08,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570706212] [2021-12-07 00:05:08,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:08,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:05:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:05:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:05:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:05:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:05:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:05:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:05:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-07 00:05:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:05:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:05:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:05:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-07 00:05:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-07 00:05:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:05:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-07 00:05:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-07 00:05:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:05:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-07 00:05:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-07 00:05:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-07 00:05:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-07 00:05:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-07 00:05:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:05:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-07 00:05:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-07 00:05:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-07 00:05:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-07 00:05:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:08,950 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-12-07 00:05:08,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:05:08,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570706212] [2021-12-07 00:05:08,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570706212] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:05:08,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013369654] [2021-12-07 00:05:08,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:05:08,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:05:08,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:05:08,952 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:05:08,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 00:05:09,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 00:05:09,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:05:09,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-07 00:05:09,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:09,441 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2021-12-07 00:05:09,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:09,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013369654] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:09,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:05:09,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2021-12-07 00:05:09,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536413919] [2021-12-07 00:05:09,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:09,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:05:09,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:05:09,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:05:09,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-12-07 00:05:09,443 INFO L87 Difference]: Start difference. First operand 255 states and 330 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-07 00:05:09,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:09,473 INFO L93 Difference]: Finished difference Result 263 states and 337 transitions. [2021-12-07 00:05:09,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:05:09,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 221 [2021-12-07 00:05:09,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:09,475 INFO L225 Difference]: With dead ends: 263 [2021-12-07 00:05:09,475 INFO L226 Difference]: Without dead ends: 261 [2021-12-07 00:05:09,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2021-12-07 00:05:09,476 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 12 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:09,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1217 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:05:09,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-12-07 00:05:09,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 259. [2021-12-07 00:05:09,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 164 states have (on average 1.170731707317073) internal successors, (192), 165 states have internal predecessors, (192), 68 states have call successors, (68), 25 states have call predecessors, (68), 26 states have return successors, (73), 68 states have call predecessors, (73), 67 states have call successors, (73) [2021-12-07 00:05:09,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 333 transitions. [2021-12-07 00:05:09,489 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 333 transitions. Word has length 221 [2021-12-07 00:05:09,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:09,490 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 333 transitions. [2021-12-07 00:05:09,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2021-12-07 00:05:09,490 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 333 transitions. [2021-12-07 00:05:09,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-12-07 00:05:09,491 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:09,492 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:05:09,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-07 00:05:09,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:05:09,694 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:09,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:09,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1053277728, now seen corresponding path program 1 times [2021-12-07 00:05:09,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:05:09,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493989327] [2021-12-07 00:05:09,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:09,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:05:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:09,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:09,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:05:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:09,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:05:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:09,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:05:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:09,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:05:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:09,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:10,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:05:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:05:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-07 00:05:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:05:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:05:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:05:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-07 00:05:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-07 00:05:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:05:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-07 00:05:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-07 00:05:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:05:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-07 00:05:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-07 00:05:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-07 00:05:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-07 00:05:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-07 00:05:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:05:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-07 00:05:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-07 00:05:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-07 00:05:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-07 00:05:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-12-07 00:05:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-07 00:05:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,505 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-12-07 00:05:10,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:05:10,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493989327] [2021-12-07 00:05:10,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493989327] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:05:10,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932480354] [2021-12-07 00:05:10,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:10,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:05:10,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:05:10,506 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:05:10,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-07 00:05:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:10,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 2879 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-07 00:05:10,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:11,119 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 32 proven. 9 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2021-12-07 00:05:11,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:05:11,389 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2021-12-07 00:05:11,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932480354] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-07 00:05:11,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:05:11,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16, 8] total 24 [2021-12-07 00:05:11,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356640203] [2021-12-07 00:05:11,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:11,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:05:11,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:05:11,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:05:11,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2021-12-07 00:05:11,391 INFO L87 Difference]: Start difference. First operand 259 states and 333 transitions. Second operand has 5 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2021-12-07 00:05:11,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:11,439 INFO L93 Difference]: Finished difference Result 267 states and 340 transitions. [2021-12-07 00:05:11,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:05:11,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 234 [2021-12-07 00:05:11,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:11,442 INFO L225 Difference]: With dead ends: 267 [2021-12-07 00:05:11,442 INFO L226 Difference]: Without dead ends: 265 [2021-12-07 00:05:11,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2021-12-07 00:05:11,444 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 6 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:11,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1224 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:05:11,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-12-07 00:05:11,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 263. [2021-12-07 00:05:11,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 167 states have (on average 1.1676646706586826) internal successors, (195), 168 states have internal predecessors, (195), 68 states have call successors, (68), 26 states have call predecessors, (68), 27 states have return successors, (73), 68 states have call predecessors, (73), 67 states have call successors, (73) [2021-12-07 00:05:11,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 336 transitions. [2021-12-07 00:05:11,462 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 336 transitions. Word has length 234 [2021-12-07 00:05:11,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:11,463 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 336 transitions. [2021-12-07 00:05:11,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2021-12-07 00:05:11,463 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 336 transitions. [2021-12-07 00:05:11,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-12-07 00:05:11,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:11,465 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:05:11,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-07 00:05:11,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:05:11,667 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:11,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:11,668 INFO L85 PathProgramCache]: Analyzing trace with hash -2025730660, now seen corresponding path program 1 times [2021-12-07 00:05:11,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:05:11,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272542294] [2021-12-07 00:05:11,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:11,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:05:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:11,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:11,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:05:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:05:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:05:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:05:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:05:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:05:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-07 00:05:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:05:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:05:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:05:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-07 00:05:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-07 00:05:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:05:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-07 00:05:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-07 00:05:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:05:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-07 00:05:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-07 00:05:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-07 00:05:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-07 00:05:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-07 00:05:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:05:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-07 00:05:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-07 00:05:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-07 00:05:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-07 00:05:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-07 00:05:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-12-07 00:05:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2021-12-07 00:05:12,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:05:12,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272542294] [2021-12-07 00:05:12,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272542294] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:05:12,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932614761] [2021-12-07 00:05:12,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:12,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:05:12,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:05:12,417 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:05:12,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-07 00:05:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:12,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 2969 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:05:12,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:12,981 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2021-12-07 00:05:12,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:12,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932614761] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:12,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:05:12,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2021-12-07 00:05:12,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785611047] [2021-12-07 00:05:12,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:12,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:05:12,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:05:12,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:05:12,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-12-07 00:05:12,982 INFO L87 Difference]: Start difference. First operand 263 states and 336 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-07 00:05:13,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:13,004 INFO L93 Difference]: Finished difference Result 345 states and 437 transitions. [2021-12-07 00:05:13,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:05:13,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 241 [2021-12-07 00:05:13,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:13,007 INFO L225 Difference]: With dead ends: 345 [2021-12-07 00:05:13,008 INFO L226 Difference]: Without dead ends: 272 [2021-12-07 00:05:13,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-12-07 00:05:13,009 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 3 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:13,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 1242 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:05:13,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-12-07 00:05:13,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 267. [2021-12-07 00:05:13,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 170 states have (on average 1.1647058823529413) internal successors, (198), 171 states have internal predecessors, (198), 68 states have call successors, (68), 26 states have call predecessors, (68), 28 states have return successors, (74), 69 states have call predecessors, (74), 67 states have call successors, (74) [2021-12-07 00:05:13,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 340 transitions. [2021-12-07 00:05:13,025 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 340 transitions. Word has length 241 [2021-12-07 00:05:13,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:13,025 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 340 transitions. [2021-12-07 00:05:13,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-07 00:05:13,026 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 340 transitions. [2021-12-07 00:05:13,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-12-07 00:05:13,027 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:13,027 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:05:13,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-07 00:05:13,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:05:13,228 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:13,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:13,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1682430622, now seen corresponding path program 1 times [2021-12-07 00:05:13,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:05:13,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813753177] [2021-12-07 00:05:13,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:13,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:05:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:05:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:05:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:05:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:05:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:05:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:05:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-07 00:05:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:05:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:05:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:05:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-07 00:05:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-07 00:05:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:05:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-07 00:05:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-07 00:05:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:05:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-07 00:05:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-07 00:05:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-07 00:05:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-07 00:05:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-07 00:05:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:05:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-07 00:05:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-07 00:05:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-07 00:05:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-07 00:05:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-07 00:05:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-12-07 00:05:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,827 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2021-12-07 00:05:13,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:05:13,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813753177] [2021-12-07 00:05:13,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813753177] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:05:13,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691658803] [2021-12-07 00:05:13,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:13,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:05:13,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:05:13,828 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:05:13,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-07 00:05:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:14,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 2968 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-07 00:05:14,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:14,410 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2021-12-07 00:05:14,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:14,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691658803] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:14,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:05:14,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 22 [2021-12-07 00:05:14,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92588256] [2021-12-07 00:05:14,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:14,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:05:14,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:05:14,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:05:14,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2021-12-07 00:05:14,412 INFO L87 Difference]: Start difference. First operand 267 states and 340 transitions. Second operand has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-12-07 00:05:14,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:14,510 INFO L93 Difference]: Finished difference Result 443 states and 567 transitions. [2021-12-07 00:05:14,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:05:14,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 241 [2021-12-07 00:05:14,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:14,512 INFO L225 Difference]: With dead ends: 443 [2021-12-07 00:05:14,512 INFO L226 Difference]: Without dead ends: 267 [2021-12-07 00:05:14,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2021-12-07 00:05:14,513 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 2 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:14,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1701 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:05:14,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-12-07 00:05:14,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2021-12-07 00:05:14,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 170 states have (on average 1.1647058823529413) internal successors, (198), 171 states have internal predecessors, (198), 68 states have call successors, (68), 26 states have call predecessors, (68), 28 states have return successors, (73), 69 states have call predecessors, (73), 67 states have call successors, (73) [2021-12-07 00:05:14,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 339 transitions. [2021-12-07 00:05:14,527 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 339 transitions. Word has length 241 [2021-12-07 00:05:14,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:14,528 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 339 transitions. [2021-12-07 00:05:14,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-12-07 00:05:14,528 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 339 transitions. [2021-12-07 00:05:14,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-12-07 00:05:14,529 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:14,529 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2021-12-07 00:05:14,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-07 00:05:14,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:05:14,730 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:14,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:14,730 INFO L85 PathProgramCache]: Analyzing trace with hash 762116007, now seen corresponding path program 2 times [2021-12-07 00:05:14,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:05:14,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118901991] [2021-12-07 00:05:14,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:14,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:05:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:05:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:05:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 00:05:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:05:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:05:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:05:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-07 00:05:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:05:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:05:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:05:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-07 00:05:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-07 00:05:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:05:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-07 00:05:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-07 00:05:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:05:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-07 00:05:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:15,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-07 00:05:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:16,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:05:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:16,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:16,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-07 00:05:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:16,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-07 00:05:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:16,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-07 00:05:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:16,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:05:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:16,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:16,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-07 00:05:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:16,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-07 00:05:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:16,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-07 00:05:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:16,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:05:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:16,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:05:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:16,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-07 00:05:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:16,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-12-07 00:05:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:16,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-07 00:05:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:16,390 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 32 proven. 13 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2021-12-07 00:05:16,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:05:16,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118901991] [2021-12-07 00:05:16,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118901991] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:05:16,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907295485] [2021-12-07 00:05:16,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:05:16,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:05:16,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:05:16,391 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:05:16,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-07 00:05:16,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:05:16,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:05:17,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 3022 conjuncts, 213 conjunts are in the unsatisfiable core [2021-12-07 00:05:17,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:17,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-07 00:05:17,585 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-07 00:05:17,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-07 00:05:17,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-07 00:05:17,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-07 00:05:17,888 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: line 284097 column 44: unknown constant v_hash_table_state_required_bytes_~#elemsize~0.base_19 [2021-12-07 00:05:17,888 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:05:17,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2021-12-07 00:05:17,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331195347] [2021-12-07 00:05:17,888 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-07 00:05:17,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-07 00:05:17,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:05:17,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-07 00:05:17,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1590, Unknown=0, NotChecked=0, Total=1722 [2021-12-07 00:05:17,890 INFO L87 Difference]: Start difference. First operand 267 states and 339 transitions. Second operand has 38 states, 33 states have (on average 2.909090909090909) internal successors, (96), 32 states have internal predecessors, (96), 18 states have call successors, (38), 7 states have call predecessors, (38), 9 states have return successors, (36), 17 states have call predecessors, (36), 17 states have call successors, (36) [2021-12-07 00:05:17,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 00:05:17,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 104 SyntacticMatches, 11 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=132, Invalid=1590, Unknown=0, NotChecked=0, Total=1722 [2021-12-07 00:05:17,891 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:17,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:05:17,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-07 00:05:18,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-07 00:05:18,094 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@45c1c2fc at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:455) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-07 00:05:18,104 INFO L158 Benchmark]: Toolchain (without parser) took 33602.01ms. Allocated memory was 115.3MB in the beginning and 293.6MB in the end (delta: 178.3MB). Free memory was 79.9MB in the beginning and 139.5MB in the end (delta: -59.7MB). Peak memory consumption was 119.4MB. Max. memory is 16.1GB. [2021-12-07 00:05:18,104 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 79.7MB. Free memory is still 49.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:05:18,106 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2417.61ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 79.5MB in the beginning and 75.0MB in the end (delta: 4.4MB). Peak memory consumption was 87.2MB. Max. memory is 16.1GB. [2021-12-07 00:05:18,107 INFO L158 Benchmark]: Boogie Procedure Inliner took 129.63ms. Allocated memory is still 138.4MB. Free memory was 75.0MB in the beginning and 63.8MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-07 00:05:18,107 INFO L158 Benchmark]: Boogie Preprocessor took 70.03ms. Allocated memory is still 138.4MB. Free memory was 63.8MB in the beginning and 56.2MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-07 00:05:18,108 INFO L158 Benchmark]: RCFGBuilder took 1184.50ms. Allocated memory is still 138.4MB. Free memory was 56.2MB in the beginning and 59.5MB in the end (delta: -3.3MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. [2021-12-07 00:05:18,110 INFO L158 Benchmark]: TraceAbstraction took 29795.35ms. Allocated memory was 138.4MB in the beginning and 293.6MB in the end (delta: 155.2MB). Free memory was 58.7MB in the beginning and 139.5MB in the end (delta: -80.8MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. [2021-12-07 00:05:18,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 79.7MB. Free memory is still 49.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2417.61ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 79.5MB in the beginning and 75.0MB in the end (delta: 4.4MB). Peak memory consumption was 87.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 129.63ms. Allocated memory is still 138.4MB. Free memory was 75.0MB in the beginning and 63.8MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.03ms. Allocated memory is still 138.4MB. Free memory was 63.8MB in the beginning and 56.2MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1184.50ms. Allocated memory is still 138.4MB. Free memory was 56.2MB in the beginning and 59.5MB in the end (delta: -3.3MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. * TraceAbstraction took 29795.35ms. Allocated memory was 138.4MB in the beginning and 293.6MB in the end (delta: 155.2MB). Free memory was 58.7MB in the beginning and 139.5MB in the end (delta: -80.8MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@45c1c2fc de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@45c1c2fc: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-07 00:05:18,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 1 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_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:05:19,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:05:19,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:05:19,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:05:19,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:05:19,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:05:19,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:05:19,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:05:19,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:05:19,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:05:19,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:05:19,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:05:19,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:05:19,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:05:19,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:05:19,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:05:19,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:05:19,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:05:19,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:05:19,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:05:19,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:05:19,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:05:19,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:05:19,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:05:19,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:05:19,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:05:19,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:05:19,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:05:19,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:05:19,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:05:19,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:05:19,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:05:19,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:05:19,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:05:19,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:05:19,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:05:19,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:05:19,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:05:19,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:05:19,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:05:19,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:05:19,757 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-07 00:05:19,778 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:05:19,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:05:19,778 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:05:19,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:05:19,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:05:19,779 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:05:19,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:05:19,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:05:19,781 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:05:19,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:05:19,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:05:19,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:05:19,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:05:19,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:05:19,782 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-07 00:05:19,782 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-07 00:05:19,782 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-07 00:05:19,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:05:19,783 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:05:19,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:05:19,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:05:19,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:05:19,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:05:19,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:05:19,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:05:19,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:05:19,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:05:19,785 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-07 00:05:19,785 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-07 00:05:19,785 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:05:19,785 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:05:19,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:05:19,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:05:19,786 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-07 00:05:19,786 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_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 [2021-12-07 00:05:20,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:05:20,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:05:20,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:05:20,043 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:05:20,044 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:05:20,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-12-07 00:05:20,088 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/data/54bedda1d/7994b5d1578e42f5b07726b19b7c6933/FLAG3cb00b2bb [2021-12-07 00:05:20,658 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:05:20,658 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-12-07 00:05:20,685 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/data/54bedda1d/7994b5d1578e42f5b07726b19b7c6933/FLAG3cb00b2bb [2021-12-07 00:05:21,120 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/data/54bedda1d/7994b5d1578e42f5b07726b19b7c6933 [2021-12-07 00:05:21,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:05:21,123 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:05:21,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:05:21,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:05:21,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:05:21,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:05:21" (1/1) ... [2021-12-07 00:05:21,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55651abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:21, skipping insertion in model container [2021-12-07 00:05:21,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:05:21" (1/1) ... [2021-12-07 00:05:21,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:05:21,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:05:21,471 WARN L230 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_ec26ede2-1b67-4e53-b200-1251b87ba9ea/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2021-12-07 00:05:21,478 WARN L230 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_ec26ede2-1b67-4e53-b200-1251b87ba9ea/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2021-12-07 00:05:22,243 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:22,243 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:22,243 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:22,244 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:22,245 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:22,255 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:22,256 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:22,257 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:22,258 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:22,259 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:22,260 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:22,260 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:22,261 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:22,611 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-07 00:05:22,612 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-07 00:05:22,612 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-07 00:05:22,613 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-07 00:05:22,614 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-07 00:05:22,615 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-07 00:05:22,615 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-07 00:05:22,616 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-07 00:05:22,617 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-07 00:05:22,617 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-07 00:05:22,759 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-07 00:05:23,001 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,001 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,018 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,019 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,023 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,024 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,034 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,035 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,035 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,035 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,035 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,036 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,036 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:05:23,096 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-07 00:05:23,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:05:23,163 WARN L230 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_ec26ede2-1b67-4e53-b200-1251b87ba9ea/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2021-12-07 00:05:23,163 WARN L230 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_ec26ede2-1b67-4e53-b200-1251b87ba9ea/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2021-12-07 00:05:23,187 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,188 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,188 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,188 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,189 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,193 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,194 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,194 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,195 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,195 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,196 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,196 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,196 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,219 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-07 00:05:23,220 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-07 00:05:23,220 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-07 00:05:23,221 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-07 00:05:23,221 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-07 00:05:23,222 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-07 00:05:23,222 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-07 00:05:23,222 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-07 00:05:23,222 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-07 00:05:23,223 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-07 00:05:23,236 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-07 00:05:23,330 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,330 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,343 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,344 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,346 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,347 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,353 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,354 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,355 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,355 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,355 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,356 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,356 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,375 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:05:23,393 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:05:23,405 WARN L230 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_ec26ede2-1b67-4e53-b200-1251b87ba9ea/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2021-12-07 00:05:23,405 WARN L230 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_ec26ede2-1b67-4e53-b200-1251b87ba9ea/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2021-12-07 00:05:23,432 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,433 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,433 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,433 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,434 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,438 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,439 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,440 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,440 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,441 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,441 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,442 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,442 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,469 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-07 00:05:23,469 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-07 00:05:23,470 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-07 00:05:23,470 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-07 00:05:23,471 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-07 00:05:23,471 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-07 00:05:23,471 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-07 00:05:23,472 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-07 00:05:23,472 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-07 00:05:23,472 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-07 00:05:23,485 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-07 00:05:23,561 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,562 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,567 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,568 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,570 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,570 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,577 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,577 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,577 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,578 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,578 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,578 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,579 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-07 00:05:23,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:05:23,865 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:05:23,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:23 WrapperNode [2021-12-07 00:05:23,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:05:23,867 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:05:23,867 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:05:23,867 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:05:23,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:23" (1/1) ... [2021-12-07 00:05:23,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:23" (1/1) ... [2021-12-07 00:05:24,018 INFO L137 Inliner]: procedures = 794, calls = 2455, calls flagged for inlining = 71, calls inlined = 19, statements flattened = 824 [2021-12-07 00:05:24,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:05:24,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:05:24,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:05:24,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:05:24,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:23" (1/1) ... [2021-12-07 00:05:24,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:23" (1/1) ... [2021-12-07 00:05:24,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:23" (1/1) ... [2021-12-07 00:05:24,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:23" (1/1) ... [2021-12-07 00:05:24,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:23" (1/1) ... [2021-12-07 00:05:24,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:23" (1/1) ... [2021-12-07 00:05:24,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:23" (1/1) ... [2021-12-07 00:05:24,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:05:24,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:05:24,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:05:24,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:05:24,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:23" (1/1) ... [2021-12-07 00:05:24,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:05:24,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:05:24,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:05:24,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:05:24,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-12-07 00:05:24,167 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-07 00:05:24,167 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-07 00:05:24,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-07 00:05:24,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-07 00:05:24,167 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-12-07 00:05:24,167 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-12-07 00:05:24,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-07 00:05:24,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:05:24,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-07 00:05:24,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:05:24,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:05:24,168 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-07 00:05:24,168 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-07 00:05:24,168 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-07 00:05:24,168 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-07 00:05:24,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 00:05:24,168 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-07 00:05:24,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-07 00:05:24,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-07 00:05:24,169 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-07 00:05:24,169 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-07 00:05:24,169 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_find [2021-12-07 00:05:24,169 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_find [2021-12-07 00:05:24,169 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2021-12-07 00:05:24,169 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2021-12-07 00:05:24,169 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-12-07 00:05:24,170 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-12-07 00:05:24,170 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2021-12-07 00:05:24,170 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2021-12-07 00:05:24,170 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2021-12-07 00:05:24,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2021-12-07 00:05:24,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 00:05:24,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-07 00:05:24,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-07 00:05:24,170 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-12-07 00:05:24,170 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-12-07 00:05:24,170 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2021-12-07 00:05:24,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2021-12-07 00:05:24,171 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2021-12-07 00:05:24,171 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2021-12-07 00:05:24,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-07 00:05:24,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-07 00:05:24,171 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2021-12-07 00:05:24,171 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2021-12-07 00:05:24,171 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-07 00:05:24,171 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-07 00:05:24,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-07 00:05:24,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-07 00:05:24,172 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-12-07 00:05:24,172 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-12-07 00:05:24,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-07 00:05:24,172 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-07 00:05:24,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-07 00:05:24,172 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-07 00:05:24,172 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-07 00:05:24,172 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2021-12-07 00:05:24,172 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2021-12-07 00:05:24,404 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:05:24,406 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:05:24,544 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2021-12-07 00:05:24,669 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-12-07 00:05:25,138 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !true; [2021-12-07 00:05:26,069 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:05:26,077 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:05:26,078 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-12-07 00:05:26,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:05:26 BoogieIcfgContainer [2021-12-07 00:05:26,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:05:26,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:05:26,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:05:26,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:05:26,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:05:21" (1/3) ... [2021-12-07 00:05:26,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d28656e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:05:26, skipping insertion in model container [2021-12-07 00:05:26,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:23" (2/3) ... [2021-12-07 00:05:26,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d28656e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:05:26, skipping insertion in model container [2021-12-07 00:05:26,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:05:26" (3/3) ... [2021-12-07 00:05:26,086 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_find_harness.i [2021-12-07 00:05:26,089 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:05:26,090 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:05:26,126 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:05:26,130 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=PETRI_NET, 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 [2021-12-07 00:05:26,130 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:05:26,148 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 146 states have (on average 1.2191780821917808) internal successors, (178), 144 states have internal predecessors, (178), 65 states have call successors, (65), 21 states have call predecessors, (65), 21 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2021-12-07 00:05:26,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-07 00:05:26,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:26,161 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:05:26,161 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:26,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:26,165 INFO L85 PathProgramCache]: Analyzing trace with hash -501442740, now seen corresponding path program 1 times [2021-12-07 00:05:26,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:26,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796739458] [2021-12-07 00:05:26,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:26,180 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:26,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:26,181 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:26,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-07 00:05:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:27,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 1692 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-07 00:05:27,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:27,292 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-12-07 00:05:27,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:27,293 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:27,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796739458] [2021-12-07 00:05:27,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796739458] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:27,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:27,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:05:27,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101831465] [2021-12-07 00:05:27,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:27,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 00:05:27,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:27,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 00:05:27,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:05:27,332 INFO L87 Difference]: Start difference. First operand has 231 states, 146 states have (on average 1.2191780821917808) internal successors, (178), 144 states have internal predecessors, (178), 65 states have call successors, (65), 21 states have call predecessors, (65), 21 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-07 00:05:27,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:27,384 INFO L93 Difference]: Finished difference Result 456 states and 647 transitions. [2021-12-07 00:05:27,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 00:05:27,386 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 178 [2021-12-07 00:05:27,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:27,396 INFO L225 Difference]: With dead ends: 456 [2021-12-07 00:05:27,397 INFO L226 Difference]: Without dead ends: 224 [2021-12-07 00:05:27,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:05:27,406 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:27,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:05:27,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-12-07 00:05:27,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2021-12-07 00:05:27,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 137 states have (on average 1.2043795620437956) internal successors, (165), 138 states have internal predecessors, (165), 65 states have call successors, (65), 21 states have call predecessors, (65), 21 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-12-07 00:05:27,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 294 transitions. [2021-12-07 00:05:27,458 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 294 transitions. Word has length 178 [2021-12-07 00:05:27,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:27,459 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 294 transitions. [2021-12-07 00:05:27,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-07 00:05:27,459 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 294 transitions. [2021-12-07 00:05:27,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-07 00:05:27,463 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:27,463 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:05:27,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:05:27,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:27,665 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:27,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:27,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1965212336, now seen corresponding path program 1 times [2021-12-07 00:05:27,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:27,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376863587] [2021-12-07 00:05:27,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:27,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:27,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:27,677 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:27,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-07 00:05:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:28,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 1692 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:05:28,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-12-07 00:05:28,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:28,870 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:28,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376863587] [2021-12-07 00:05:28,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376863587] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:28,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:28,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:05:28,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48736939] [2021-12-07 00:05:28,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:28,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:05:28,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:28,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:05:28,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:05:28,874 INFO L87 Difference]: Start difference. First operand 224 states and 294 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-07 00:05:28,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:28,938 INFO L93 Difference]: Finished difference Result 443 states and 581 transitions. [2021-12-07 00:05:28,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:05:28,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 178 [2021-12-07 00:05:28,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:28,941 INFO L225 Difference]: With dead ends: 443 [2021-12-07 00:05:28,941 INFO L226 Difference]: Without dead ends: 228 [2021-12-07 00:05:28,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:05:28,943 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 2 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:28,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1164 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:05:28,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-12-07 00:05:28,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-12-07 00:05:28,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 140 states have (on average 1.2) internal successors, (168), 141 states have internal predecessors, (168), 65 states have call successors, (65), 21 states have call predecessors, (65), 22 states have return successors, (65), 65 states have call predecessors, (65), 64 states have call successors, (65) [2021-12-07 00:05:28,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 298 transitions. [2021-12-07 00:05:28,961 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 298 transitions. Word has length 178 [2021-12-07 00:05:28,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:28,961 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 298 transitions. [2021-12-07 00:05:28,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-07 00:05:28,962 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 298 transitions. [2021-12-07 00:05:28,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-07 00:05:28,964 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:28,965 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:05:28,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-07 00:05:29,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:29,166 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:29,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:29,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1472595880, now seen corresponding path program 1 times [2021-12-07 00:05:29,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:29,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726735449] [2021-12-07 00:05:29,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:29,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:29,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:29,169 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:29,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-07 00:05:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:29,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 1652 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 00:05:29,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:30,056 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2021-12-07 00:05:30,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:30,057 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:30,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726735449] [2021-12-07 00:05:30,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726735449] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:30,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:30,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:05:30,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587237171] [2021-12-07 00:05:30,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:30,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:05:30,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:30,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:05:30,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:05:30,059 INFO L87 Difference]: Start difference. First operand 228 states and 298 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-07 00:05:30,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:30,237 INFO L93 Difference]: Finished difference Result 449 states and 585 transitions. [2021-12-07 00:05:30,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:05:30,238 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 190 [2021-12-07 00:05:30,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:30,242 INFO L225 Difference]: With dead ends: 449 [2021-12-07 00:05:30,243 INFO L226 Difference]: Without dead ends: 230 [2021-12-07 00:05:30,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:05:30,245 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 2 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:30,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1323 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:05:30,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-12-07 00:05:30,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2021-12-07 00:05:30,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 141 states have (on average 1.198581560283688) internal successors, (169), 143 states have internal predecessors, (169), 65 states have call successors, (65), 21 states have call predecessors, (65), 23 states have return successors, (66), 65 states have call predecessors, (66), 64 states have call successors, (66) [2021-12-07 00:05:30,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 300 transitions. [2021-12-07 00:05:30,266 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 300 transitions. Word has length 190 [2021-12-07 00:05:30,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:30,267 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 300 transitions. [2021-12-07 00:05:30,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-07 00:05:30,267 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 300 transitions. [2021-12-07 00:05:30,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-07 00:05:30,270 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:30,271 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:05:30,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-07 00:05:30,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:30,472 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:30,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:30,473 INFO L85 PathProgramCache]: Analyzing trace with hash 10564960, now seen corresponding path program 1 times [2021-12-07 00:05:30,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:30,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158921181] [2021-12-07 00:05:30,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:30,477 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:30,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:30,479 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:30,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-07 00:05:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:31,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 1755 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 00:05:31,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:31,581 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-12-07 00:05:31,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:31,582 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:31,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158921181] [2021-12-07 00:05:31,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158921181] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:31,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:31,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:05:31,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871368237] [2021-12-07 00:05:31,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:31,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:05:31,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:31,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:05:31,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:05:31,584 INFO L87 Difference]: Start difference. First operand 230 states and 300 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-12-07 00:05:31,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:31,695 INFO L93 Difference]: Finished difference Result 447 states and 585 transitions. [2021-12-07 00:05:31,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:05:31,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 195 [2021-12-07 00:05:31,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:31,699 INFO L225 Difference]: With dead ends: 447 [2021-12-07 00:05:31,699 INFO L226 Difference]: Without dead ends: 237 [2021-12-07 00:05:31,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:05:31,700 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 36 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:31,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 801 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:05:31,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-12-07 00:05:31,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2021-12-07 00:05:31,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 146 states have (on average 1.1986301369863013) internal successors, (175), 149 states have internal predecessors, (175), 66 states have call successors, (66), 21 states have call predecessors, (66), 24 states have return successors, (69), 66 states have call predecessors, (69), 65 states have call successors, (69) [2021-12-07 00:05:31,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 310 transitions. [2021-12-07 00:05:31,713 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 310 transitions. Word has length 195 [2021-12-07 00:05:31,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:31,714 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 310 transitions. [2021-12-07 00:05:31,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-12-07 00:05:31,714 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 310 transitions. [2021-12-07 00:05:31,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-07 00:05:31,716 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:31,716 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 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] [2021-12-07 00:05:31,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-07 00:05:31,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:31,918 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:31,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:31,920 INFO L85 PathProgramCache]: Analyzing trace with hash 11341472, now seen corresponding path program 1 times [2021-12-07 00:05:31,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:31,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396445181] [2021-12-07 00:05:31,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:31,926 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:31,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:31,928 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:31,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-07 00:05:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:32,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 1761 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-07 00:05:32,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:32,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-07 00:05:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-12-07 00:05:33,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:33,524 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:33,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396445181] [2021-12-07 00:05:33,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396445181] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:33,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:33,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-07 00:05:33,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591030543] [2021-12-07 00:05:33,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:33,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 00:05:33,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:33,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 00:05:33,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:05:33,527 INFO L87 Difference]: Start difference. First operand 237 states and 310 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-12-07 00:05:34,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:34,567 INFO L93 Difference]: Finished difference Result 466 states and 606 transitions. [2021-12-07 00:05:34,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:05:34,568 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 195 [2021-12-07 00:05:34,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:34,570 INFO L225 Difference]: With dead ends: 466 [2021-12-07 00:05:34,570 INFO L226 Difference]: Without dead ends: 241 [2021-12-07 00:05:34,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:05:34,571 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 38 mSDsluCounter, 1998 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 2287 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:34,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 2287 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 94 Invalid, 0 Unknown, 143 Unchecked, 1.0s Time] [2021-12-07 00:05:34,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-12-07 00:05:34,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2021-12-07 00:05:34,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 150 states have (on average 1.1933333333333334) internal successors, (179), 152 states have internal predecessors, (179), 66 states have call successors, (66), 22 states have call predecessors, (66), 24 states have return successors, (69), 66 states have call predecessors, (69), 65 states have call successors, (69) [2021-12-07 00:05:34,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 314 transitions. [2021-12-07 00:05:34,582 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 314 transitions. Word has length 195 [2021-12-07 00:05:34,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:34,583 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 314 transitions. [2021-12-07 00:05:34,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-12-07 00:05:34,583 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 314 transitions. [2021-12-07 00:05:34,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-12-07 00:05:34,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:34,586 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 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] [2021-12-07 00:05:34,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-07 00:05:34,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:34,787 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:34,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:34,789 INFO L85 PathProgramCache]: Analyzing trace with hash -145875486, now seen corresponding path program 1 times [2021-12-07 00:05:34,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:34,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471383485] [2021-12-07 00:05:34,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:34,796 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:34,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:34,798 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:34,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-07 00:05:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:35,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 1775 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-07 00:05:35,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:35,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-07 00:05:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-12-07 00:05:36,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:36,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:36,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471383485] [2021-12-07 00:05:36,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1471383485] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:36,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:36,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-07 00:05:36,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121184254] [2021-12-07 00:05:36,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:36,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-07 00:05:36,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:36,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-07 00:05:36,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:05:36,532 INFO L87 Difference]: Start difference. First operand 241 states and 314 transitions. Second operand has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) [2021-12-07 00:05:37,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:37,861 INFO L93 Difference]: Finished difference Result 467 states and 607 transitions. [2021-12-07 00:05:37,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 00:05:37,862 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) Word has length 201 [2021-12-07 00:05:37,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:37,864 INFO L225 Difference]: With dead ends: 467 [2021-12-07 00:05:37,864 INFO L226 Difference]: Without dead ends: 244 [2021-12-07 00:05:37,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:05:37,866 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 36 mSDsluCounter, 2017 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 2302 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 222 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:37,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 2302 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 93 Invalid, 0 Unknown, 222 Unchecked, 1.2s Time] [2021-12-07 00:05:37,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-12-07 00:05:37,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-12-07 00:05:37,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 152 states have (on average 1.1907894736842106) internal successors, (181), 154 states have internal predecessors, (181), 67 states have call successors, (67), 23 states have call predecessors, (67), 24 states have return successors, (70), 66 states have call predecessors, (70), 66 states have call successors, (70) [2021-12-07 00:05:37,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 318 transitions. [2021-12-07 00:05:37,876 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 318 transitions. Word has length 201 [2021-12-07 00:05:37,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:37,876 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 318 transitions. [2021-12-07 00:05:37,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) [2021-12-07 00:05:37,877 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 318 transitions. [2021-12-07 00:05:37,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-07 00:05:37,878 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:37,878 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 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] [2021-12-07 00:05:37,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-07 00:05:38,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:38,080 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:38,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:38,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1621013711, now seen corresponding path program 1 times [2021-12-07 00:05:38,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:38,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264980774] [2021-12-07 00:05:38,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:38,085 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:38,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:38,086 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:38,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-07 00:05:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:39,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 00:05:39,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:39,210 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-12-07 00:05:39,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:39,211 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:39,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264980774] [2021-12-07 00:05:39,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264980774] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:39,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:39,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:05:39,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768990813] [2021-12-07 00:05:39,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:39,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:05:39,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:39,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:05:39,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:05:39,212 INFO L87 Difference]: Start difference. First operand 244 states and 318 transitions. Second operand has 6 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-12-07 00:05:39,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:39,391 INFO L93 Difference]: Finished difference Result 406 states and 536 transitions. [2021-12-07 00:05:39,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:05:39,391 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 206 [2021-12-07 00:05:39,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:39,394 INFO L225 Difference]: With dead ends: 406 [2021-12-07 00:05:39,394 INFO L226 Difference]: Without dead ends: 242 [2021-12-07 00:05:39,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:05:39,395 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 2 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:39,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1323 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:05:39,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-12-07 00:05:39,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 238. [2021-12-07 00:05:39,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 148 states have (on average 1.1824324324324325) internal successors, (175), 149 states have internal predecessors, (175), 67 states have call successors, (67), 23 states have call predecessors, (67), 22 states have return successors, (68), 65 states have call predecessors, (68), 66 states have call successors, (68) [2021-12-07 00:05:39,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 310 transitions. [2021-12-07 00:05:39,407 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 310 transitions. Word has length 206 [2021-12-07 00:05:39,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:39,407 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 310 transitions. [2021-12-07 00:05:39,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-12-07 00:05:39,408 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 310 transitions. [2021-12-07 00:05:39,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-12-07 00:05:39,409 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:39,409 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 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] [2021-12-07 00:05:39,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-07 00:05:39,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:39,611 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:39,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:39,613 INFO L85 PathProgramCache]: Analyzing trace with hash 500291049, now seen corresponding path program 1 times [2021-12-07 00:05:39,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:39,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317273438] [2021-12-07 00:05:39,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:39,620 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:39,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:39,622 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:39,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-07 00:05:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:40,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 1895 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:05:41,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:41,150 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-12-07 00:05:41,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:41,151 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:41,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1317273438] [2021-12-07 00:05:41,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1317273438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:41,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:41,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:05:41,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231547338] [2021-12-07 00:05:41,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:41,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:05:41,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:41,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:05:41,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:05:41,152 INFO L87 Difference]: Start difference. First operand 238 states and 310 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-07 00:05:41,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:41,319 INFO L93 Difference]: Finished difference Result 397 states and 525 transitions. [2021-12-07 00:05:41,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:05:41,320 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 211 [2021-12-07 00:05:41,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:41,322 INFO L225 Difference]: With dead ends: 397 [2021-12-07 00:05:41,322 INFO L226 Difference]: Without dead ends: 244 [2021-12-07 00:05:41,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:05:41,323 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 2 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:41,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1587 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:05:41,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-12-07 00:05:41,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 241. [2021-12-07 00:05:41,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 150 states have (on average 1.18) internal successors, (177), 152 states have internal predecessors, (177), 67 states have call successors, (67), 23 states have call predecessors, (67), 23 states have return successors, (71), 65 states have call predecessors, (71), 66 states have call successors, (71) [2021-12-07 00:05:41,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 315 transitions. [2021-12-07 00:05:41,333 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 315 transitions. Word has length 211 [2021-12-07 00:05:41,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:41,333 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 315 transitions. [2021-12-07 00:05:41,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-07 00:05:41,334 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 315 transitions. [2021-12-07 00:05:41,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-12-07 00:05:41,335 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:41,335 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:05:41,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-07 00:05:41,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:41,537 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:41,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:41,538 INFO L85 PathProgramCache]: Analyzing trace with hash 2127170151, now seen corresponding path program 2 times [2021-12-07 00:05:41,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:41,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829882480] [2021-12-07 00:05:41,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:05:41,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:41,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:41,548 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:41,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-07 00:05:41,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 00:05:41,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:05:41,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-07 00:05:41,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:42,139 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2021-12-07 00:05:42,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:42,140 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:42,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829882480] [2021-12-07 00:05:42,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829882480] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:42,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:42,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:05:42,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916524371] [2021-12-07 00:05:42,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:42,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:05:42,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:42,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:05:42,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:05:42,142 INFO L87 Difference]: Start difference. First operand 241 states and 315 transitions. Second operand has 5 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2021-12-07 00:05:42,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:42,183 INFO L93 Difference]: Finished difference Result 249 states and 322 transitions. [2021-12-07 00:05:42,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:05:42,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 217 [2021-12-07 00:05:42,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:42,186 INFO L225 Difference]: With dead ends: 249 [2021-12-07 00:05:42,186 INFO L226 Difference]: Without dead ends: 247 [2021-12-07 00:05:42,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:05:42,187 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 12 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:42,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1143 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:05:42,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-12-07 00:05:42,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 245. [2021-12-07 00:05:42,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 153 states have (on average 1.1764705882352942) internal successors, (180), 155 states have internal predecessors, (180), 67 states have call successors, (67), 24 states have call predecessors, (67), 24 states have return successors, (71), 65 states have call predecessors, (71), 66 states have call successors, (71) [2021-12-07 00:05:42,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 318 transitions. [2021-12-07 00:05:42,202 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 318 transitions. Word has length 217 [2021-12-07 00:05:42,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:42,202 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 318 transitions. [2021-12-07 00:05:42,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2021-12-07 00:05:42,203 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 318 transitions. [2021-12-07 00:05:42,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-12-07 00:05:42,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:42,205 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:05:42,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-07 00:05:42,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:42,407 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:42,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:42,408 INFO L85 PathProgramCache]: Analyzing trace with hash 533171121, now seen corresponding path program 1 times [2021-12-07 00:05:42,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:42,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116043491] [2021-12-07 00:05:42,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:42,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:42,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:42,427 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:42,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-07 00:05:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:43,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 1930 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-07 00:05:43,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:44,403 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-07 00:05:44,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:44,403 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:44,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116043491] [2021-12-07 00:05:44,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116043491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:44,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:44,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-07 00:05:44,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459980943] [2021-12-07 00:05:44,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:44,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:05:44,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:44,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:05:44,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:05:44,404 INFO L87 Difference]: Start difference. First operand 245 states and 318 transitions. Second operand has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) [2021-12-07 00:05:45,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:45,554 INFO L93 Difference]: Finished difference Result 409 states and 541 transitions. [2021-12-07 00:05:45,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:05:45,556 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) Word has length 230 [2021-12-07 00:05:45,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:45,558 INFO L225 Difference]: With dead ends: 409 [2021-12-07 00:05:45,558 INFO L226 Difference]: Without dead ends: 247 [2021-12-07 00:05:45,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:05:45,559 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 7 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:45,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1073 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 43 Unchecked, 0.9s Time] [2021-12-07 00:05:45,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-12-07 00:05:45,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 244. [2021-12-07 00:05:45,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 153 states have (on average 1.1764705882352942) internal successors, (180), 154 states have internal predecessors, (180), 66 states have call successors, (66), 24 states have call predecessors, (66), 24 states have return successors, (70), 65 states have call predecessors, (70), 65 states have call successors, (70) [2021-12-07 00:05:45,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 316 transitions. [2021-12-07 00:05:45,569 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 316 transitions. Word has length 230 [2021-12-07 00:05:45,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:45,569 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 316 transitions. [2021-12-07 00:05:45,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) [2021-12-07 00:05:45,570 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 316 transitions. [2021-12-07 00:05:45,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-12-07 00:05:45,571 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:45,571 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:05:45,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-07 00:05:45,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:45,773 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:45,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:45,774 INFO L85 PathProgramCache]: Analyzing trace with hash 925847752, now seen corresponding path program 2 times [2021-12-07 00:05:45,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:45,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115445978] [2021-12-07 00:05:45,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:05:45,782 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:45,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:45,784 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:45,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-07 00:05:47,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:05:47,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:05:47,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 1947 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-07 00:05:47,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:48,020 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-12-07 00:05:48,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:48,021 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:48,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115445978] [2021-12-07 00:05:48,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115445978] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:48,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:48,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:05:48,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188285035] [2021-12-07 00:05:48,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:48,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:05:48,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:48,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:05:48,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:05:48,030 INFO L87 Difference]: Start difference. First operand 244 states and 316 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 4 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2021-12-07 00:05:48,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:48,253 INFO L93 Difference]: Finished difference Result 400 states and 520 transitions. [2021-12-07 00:05:48,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:05:48,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 4 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) Word has length 235 [2021-12-07 00:05:48,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:48,257 INFO L225 Difference]: With dead ends: 400 [2021-12-07 00:05:48,257 INFO L226 Difference]: Without dead ends: 237 [2021-12-07 00:05:48,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:05:48,259 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 41 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:48,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 1357 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:05:48,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-12-07 00:05:48,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2021-12-07 00:05:48,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 148 states have (on average 1.1689189189189189) internal successors, (173), 148 states have internal predecessors, (173), 65 states have call successors, (65), 24 states have call predecessors, (65), 23 states have return successors, (67), 64 states have call predecessors, (67), 64 states have call successors, (67) [2021-12-07 00:05:48,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 305 transitions. [2021-12-07 00:05:48,268 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 305 transitions. Word has length 235 [2021-12-07 00:05:48,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:48,268 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 305 transitions. [2021-12-07 00:05:48,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 4 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2021-12-07 00:05:48,269 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 305 transitions. [2021-12-07 00:05:48,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-12-07 00:05:48,270 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:48,270 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:05:48,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-07 00:05:48,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:48,470 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:48,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:48,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1406928010, now seen corresponding path program 1 times [2021-12-07 00:05:48,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:48,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685924001] [2021-12-07 00:05:48,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:48,473 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:48,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:48,473 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:48,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-07 00:05:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:49,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 1950 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-07 00:05:49,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:51,624 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 243 proven. 3 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-12-07 00:05:51,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:05:52,417 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-07 00:05:52,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-12-07 00:05:52,431 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-12-07 00:05:52,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 12 [2021-12-07 00:05:52,551 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2021-12-07 00:05:52,551 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:52,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685924001] [2021-12-07 00:05:52,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685924001] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:05:52,551 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:05:52,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 20 [2021-12-07 00:05:52,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237176156] [2021-12-07 00:05:52,551 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:05:52,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-07 00:05:52,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:52,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-07 00:05:52,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-12-07 00:05:52,553 INFO L87 Difference]: Start difference. First operand 237 states and 305 transitions. Second operand has 20 states, 19 states have (on average 6.157894736842105) internal successors, (117), 19 states have internal predecessors, (117), 6 states have call successors, (47), 4 states have call predecessors, (47), 6 states have return successors, (44), 5 states have call predecessors, (44), 6 states have call successors, (44) [2021-12-07 00:05:56,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:56,918 INFO L93 Difference]: Finished difference Result 405 states and 518 transitions. [2021-12-07 00:05:56,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 00:05:56,921 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 6.157894736842105) internal successors, (117), 19 states have internal predecessors, (117), 6 states have call successors, (47), 4 states have call predecessors, (47), 6 states have return successors, (44), 5 states have call predecessors, (44), 6 states have call successors, (44) Word has length 235 [2021-12-07 00:05:56,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:56,922 INFO L225 Difference]: With dead ends: 405 [2021-12-07 00:05:56,922 INFO L226 Difference]: Without dead ends: 256 [2021-12-07 00:05:56,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 444 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2021-12-07 00:05:56,924 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 43 mSDsluCounter, 2687 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 2975 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:56,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 2975 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 557 Invalid, 0 Unknown, 71 Unchecked, 3.7s Time] [2021-12-07 00:05:56,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-12-07 00:05:56,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 248. [2021-12-07 00:05:56,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 155 states have (on average 1.1612903225806452) internal successors, (180), 156 states have internal predecessors, (180), 66 states have call successors, (66), 26 states have call predecessors, (66), 26 states have return successors, (67), 65 states have call predecessors, (67), 65 states have call successors, (67) [2021-12-07 00:05:56,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 313 transitions. [2021-12-07 00:05:56,934 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 313 transitions. Word has length 235 [2021-12-07 00:05:56,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:56,935 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 313 transitions. [2021-12-07 00:05:56,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.157894736842105) internal successors, (117), 19 states have internal predecessors, (117), 6 states have call successors, (47), 4 states have call predecessors, (47), 6 states have return successors, (44), 5 states have call predecessors, (44), 6 states have call successors, (44) [2021-12-07 00:05:56,935 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 313 transitions. [2021-12-07 00:05:56,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-12-07 00:05:56,936 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:56,936 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:05:56,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-07 00:05:57,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:57,137 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:57,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:57,138 INFO L85 PathProgramCache]: Analyzing trace with hash 759558577, now seen corresponding path program 1 times [2021-12-07 00:05:57,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:57,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102052175] [2021-12-07 00:05:57,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:57,141 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:57,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:57,142 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:57,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-07 00:05:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:58,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 1981 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-07 00:05:58,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:06:00,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-12-07 00:06:00,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-12-07 00:06:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 241 proven. 16 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-12-07 00:06:00,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:06:01,181 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-07 00:06:01,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-12-07 00:06:01,196 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-12-07 00:06:01,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 12 [2021-12-07 00:06:01,331 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-12-07 00:06:01,331 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:06:01,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102052175] [2021-12-07 00:06:01,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102052175] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:06:01,332 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:06:01,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 18 [2021-12-07 00:06:01,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022351538] [2021-12-07 00:06:01,332 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:06:01,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-07 00:06:01,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:06:01,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-07 00:06:01,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-12-07 00:06:01,333 INFO L87 Difference]: Start difference. First operand 248 states and 313 transitions. Second operand has 18 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 8 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (44), 6 states have call predecessors, (44), 7 states have call successors, (44) [2021-12-07 00:06:03,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:03,840 INFO L93 Difference]: Finished difference Result 407 states and 514 transitions. [2021-12-07 00:06:03,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-07 00:06:03,843 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 8 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (44), 6 states have call predecessors, (44), 7 states have call successors, (44) Word has length 246 [2021-12-07 00:06:03,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:03,845 INFO L225 Difference]: With dead ends: 407 [2021-12-07 00:06:03,845 INFO L226 Difference]: Without dead ends: 258 [2021-12-07 00:06:03,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 466 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2021-12-07 00:06:03,846 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 61 mSDsluCounter, 2836 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 3112 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:06:03,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 3112 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 390 Invalid, 0 Unknown, 66 Unchecked, 1.8s Time] [2021-12-07 00:06:03,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-12-07 00:06:03,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 254. [2021-12-07 00:06:03,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 159 states have (on average 1.1572327044025157) internal successors, (184), 161 states have internal predecessors, (184), 66 states have call successors, (66), 27 states have call predecessors, (66), 28 states have return successors, (69), 65 states have call predecessors, (69), 65 states have call successors, (69) [2021-12-07 00:06:03,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 319 transitions. [2021-12-07 00:06:03,856 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 319 transitions. Word has length 246 [2021-12-07 00:06:03,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:03,857 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 319 transitions. [2021-12-07 00:06:03,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 8 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (44), 6 states have call predecessors, (44), 7 states have call successors, (44) [2021-12-07 00:06:03,857 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 319 transitions. [2021-12-07 00:06:03,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-12-07 00:06:03,858 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:03,858 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:06:03,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-12-07 00:06:04,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:06:04,059 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:04,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:04,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1235109588, now seen corresponding path program 1 times [2021-12-07 00:06:04,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:06:04,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647266963] [2021-12-07 00:06:04,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:04,061 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:06:04,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:06:04,062 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:06:04,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-07 00:06:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:05,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 1998 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:06:05,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:06:05,854 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-12-07 00:06:05,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:06:05,854 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:06:05,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647266963] [2021-12-07 00:06:05,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647266963] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:06:05,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:06:05,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:06:05,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006557939] [2021-12-07 00:06:05,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:06:05,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:06:05,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:06:05,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:06:05,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:06:05,856 INFO L87 Difference]: Start difference. First operand 254 states and 319 transitions. Second operand has 5 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2021-12-07 00:06:05,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:05,899 INFO L93 Difference]: Finished difference Result 264 states and 329 transitions. [2021-12-07 00:06:05,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:06:05,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 251 [2021-12-07 00:06:05,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:05,901 INFO L225 Difference]: With dead ends: 264 [2021-12-07 00:06:05,901 INFO L226 Difference]: Without dead ends: 262 [2021-12-07 00:06:05,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:06:05,901 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 7 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:06:05,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 1151 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:06:05,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-12-07 00:06:05,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 259. [2021-12-07 00:06:05,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 162 states have (on average 1.154320987654321) internal successors, (187), 165 states have internal predecessors, (187), 67 states have call successors, (67), 28 states have call predecessors, (67), 29 states have return successors, (70), 65 states have call predecessors, (70), 66 states have call successors, (70) [2021-12-07 00:06:05,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 324 transitions. [2021-12-07 00:06:05,912 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 324 transitions. Word has length 251 [2021-12-07 00:06:05,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:05,913 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 324 transitions. [2021-12-07 00:06:05,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2021-12-07 00:06:05,913 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 324 transitions. [2021-12-07 00:06:05,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-12-07 00:06:05,914 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:05,914 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:06:05,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-07 00:06:06,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:06:06,115 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:06,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:06,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1233262546, now seen corresponding path program 1 times [2021-12-07 00:06:06,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:06:06,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299726270] [2021-12-07 00:06:06,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:06,122 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:06:06,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:06:06,124 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:06:06,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-07 00:06:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:07,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:06:07,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:06:07,881 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-12-07 00:06:07,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:06:07,881 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:06:07,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299726270] [2021-12-07 00:06:07,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299726270] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:06:07,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:06:07,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:06:07,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916054799] [2021-12-07 00:06:07,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:06:07,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:06:07,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:06:07,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:06:07,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:06:07,882 INFO L87 Difference]: Start difference. First operand 259 states and 324 transitions. Second operand has 5 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2021-12-07 00:06:07,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:07,922 INFO L93 Difference]: Finished difference Result 267 states and 331 transitions. [2021-12-07 00:06:07,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:06:07,922 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 251 [2021-12-07 00:06:07,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:07,924 INFO L225 Difference]: With dead ends: 267 [2021-12-07 00:06:07,924 INFO L226 Difference]: Without dead ends: 265 [2021-12-07 00:06:07,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:06:07,925 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 7 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:06:07,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 1147 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:06:07,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-12-07 00:06:07,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 258. [2021-12-07 00:06:07,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 162 states have (on average 1.154320987654321) internal successors, (187), 164 states have internal predecessors, (187), 66 states have call successors, (66), 28 states have call predecessors, (66), 29 states have return successors, (69), 65 states have call predecessors, (69), 65 states have call successors, (69) [2021-12-07 00:06:07,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 322 transitions. [2021-12-07 00:06:07,935 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 322 transitions. Word has length 251 [2021-12-07 00:06:07,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:07,936 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 322 transitions. [2021-12-07 00:06:07,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2021-12-07 00:06:07,936 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 322 transitions. [2021-12-07 00:06:07,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-12-07 00:06:07,943 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:07,943 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2021-12-07 00:06:07,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-12-07 00:06:08,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:06:08,144 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:08,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:08,144 INFO L85 PathProgramCache]: Analyzing trace with hash -727178982, now seen corresponding path program 1 times [2021-12-07 00:06:08,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:06:08,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556716877] [2021-12-07 00:06:08,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:08,146 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:06:08,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:06:08,147 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:06:08,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-07 00:06:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:09,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 2076 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 00:06:09,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:06:10,024 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-12-07 00:06:10,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:06:10,025 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:06:10,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556716877] [2021-12-07 00:06:10,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556716877] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:06:10,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:06:10,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:06:10,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410129745] [2021-12-07 00:06:10,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:06:10,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:06:10,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:06:10,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:06:10,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:06:10,026 INFO L87 Difference]: Start difference. First operand 258 states and 322 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-12-07 00:06:10,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:10,152 INFO L93 Difference]: Finished difference Result 337 states and 417 transitions. [2021-12-07 00:06:10,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:06:10,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 258 [2021-12-07 00:06:10,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:10,155 INFO L225 Difference]: With dead ends: 337 [2021-12-07 00:06:10,155 INFO L226 Difference]: Without dead ends: 258 [2021-12-07 00:06:10,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:06:10,156 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 31 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:06:10,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 824 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:06:10,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-12-07 00:06:10,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2021-12-07 00:06:10,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 162 states have (on average 1.1419753086419753) internal successors, (185), 164 states have internal predecessors, (185), 66 states have call successors, (66), 28 states have call predecessors, (66), 29 states have return successors, (69), 65 states have call predecessors, (69), 65 states have call successors, (69) [2021-12-07 00:06:10,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 320 transitions. [2021-12-07 00:06:10,166 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 320 transitions. Word has length 258 [2021-12-07 00:06:10,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:10,166 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 320 transitions. [2021-12-07 00:06:10,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-12-07 00:06:10,167 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 320 transitions. [2021-12-07 00:06:10,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-12-07 00:06:10,168 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:10,168 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2021-12-07 00:06:10,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-07 00:06:10,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:06:10,369 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:10,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:10,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1573643608, now seen corresponding path program 1 times [2021-12-07 00:06:10,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:06:10,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650104599] [2021-12-07 00:06:10,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:10,371 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:06:10,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:06:10,372 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:06:10,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-07 00:06:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:12,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 2047 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:06:12,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:06:12,178 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-12-07 00:06:12,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:06:12,178 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:06:12,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650104599] [2021-12-07 00:06:12,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650104599] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:06:12,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:06:12,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:06:12,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254122947] [2021-12-07 00:06:12,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:06:12,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:06:12,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:06:12,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:06:12,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:06:12,180 INFO L87 Difference]: Start difference. First operand 258 states and 320 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2021-12-07 00:06:12,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:12,214 INFO L93 Difference]: Finished difference Result 340 states and 421 transitions. [2021-12-07 00:06:12,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:06:12,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) Word has length 258 [2021-12-07 00:06:12,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:12,217 INFO L225 Difference]: With dead ends: 340 [2021-12-07 00:06:12,217 INFO L226 Difference]: Without dead ends: 267 [2021-12-07 00:06:12,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:06:12,218 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 3 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:06:12,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 1154 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:06:12,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-12-07 00:06:12,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 262. [2021-12-07 00:06:12,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 165 states have (on average 1.1393939393939394) internal successors, (188), 167 states have internal predecessors, (188), 66 states have call successors, (66), 28 states have call predecessors, (66), 30 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2021-12-07 00:06:12,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 324 transitions. [2021-12-07 00:06:12,228 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 324 transitions. Word has length 258 [2021-12-07 00:06:12,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:12,228 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 324 transitions. [2021-12-07 00:06:12,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2021-12-07 00:06:12,229 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 324 transitions. [2021-12-07 00:06:12,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-12-07 00:06:12,230 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:12,230 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2021-12-07 00:06:12,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-12-07 00:06:12,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:06:12,432 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:12,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:12,433 INFO L85 PathProgramCache]: Analyzing trace with hash 986837594, now seen corresponding path program 1 times [2021-12-07 00:06:12,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:06:12,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413877400] [2021-12-07 00:06:12,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:12,441 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:06:12,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:06:12,443 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:06:12,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec26ede2-1b67-4e53-b200-1251b87ba9ea/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-07 00:08:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:30,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 2047 conjuncts, 64 conjunts are in the unsatisfiable core [2021-12-07 00:08:30,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:08:31,413 INFO L354 Elim1Store]: treesize reduction 1090, result has 6.4 percent of original size [2021-12-07 00:08:31,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 61 treesize of output 86 [2021-12-07 00:08:33,881 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 00:08:33,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 100 treesize of output 48 [2021-12-07 00:08:34,867 INFO L354 Elim1Store]: treesize reduction 1054, result has 5.8 percent of original size [2021-12-07 00:08:34,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 52 treesize of output 77 [2021-12-07 00:08:36,814 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 00:08:36,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 128 treesize of output 88 [2021-12-07 00:08:37,797 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 208 proven. 10 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-12-07 00:08:37,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:08:46,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5139 treesize of output 5125