./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 b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/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_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 13:45:45,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:45:45,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:45:45,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:45:45,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:45:45,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:45:45,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:45:45,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:45:45,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:45:45,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:45:45,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:45:45,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:45:45,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:45:45,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:45:45,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:45:45,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:45:45,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:45:45,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:45:45,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:45:45,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:45:45,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:45:45,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:45:45,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:45:45,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:45:45,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:45:45,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:45:45,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:45:45,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:45:45,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:45:45,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:45:45,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:45:45,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:45:45,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:45:45,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:45:45,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:45:45,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:45:45,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:45:45,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:45:45,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:45:45,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:45:45,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:45:45,368 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-21 13:45:45,407 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:45:45,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:45:45,408 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:45:45,408 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:45:45,409 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:45:45,410 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:45:45,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:45:45,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:45:45,411 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:45:45,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:45:45,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:45:45,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:45:45,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:45:45,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:45:45,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:45:45,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:45:45,414 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:45:45,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:45:45,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:45:45,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:45:45,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:45:45,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:45:45,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:45:45,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:45:45,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:45:45,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:45:45,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:45:45,416 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:45:45,416 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:45:45,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:45:45,417 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_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 [2022-11-21 13:45:45,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:45:45,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:45:45,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:45:45,738 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:45:45,738 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:45:45,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2022-11-21 13:45:48,843 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:45:49,481 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:45:49,482 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2022-11-21 13:45:49,525 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/data/3a9c18707/78d47e87a6a04ce88b7b9c3d6f6bebe3/FLAGf87580108 [2022-11-21 13:45:49,548 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/data/3a9c18707/78d47e87a6a04ce88b7b9c3d6f6bebe3 [2022-11-21 13:45:49,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:45:49,553 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:45:49,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:45:49,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:45:49,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:45:49,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:45:49" (1/1) ... [2022-11-21 13:45:49,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e1ed72d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:49, skipping insertion in model container [2022-11-21 13:45:49,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:45:49" (1/1) ... [2022-11-21 13:45:49,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:45:49,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:45:49,998 WARN L237 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_10821448-eb55-472b-8a57-5aa577c32687/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2022-11-21 13:45:50,013 WARN L237 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_10821448-eb55-472b-8a57-5aa577c32687/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2022-11-21 13:45:51,312 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:51,313 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:51,314 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:51,315 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:51,316 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:51,332 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:51,333 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:51,336 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:51,336 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:51,339 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:51,340 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:51,341 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:51,342 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:51,991 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-21 13:45:51,993 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-21 13:45:51,994 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-21 13:45:51,996 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-21 13:45:51,998 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-21 13:45:51,998 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-21 13:45:51,999 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-21 13:45:52,000 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-21 13:45:52,001 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-21 13:45:52,002 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-21 13:45:52,254 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-21 13:45:52,805 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:52,807 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:52,842 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:52,844 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:52,851 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:52,853 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:52,876 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:52,878 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:52,879 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:52,880 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:52,880 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:52,881 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:52,881 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:52,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:45:52,989 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:45:53,019 WARN L237 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_10821448-eb55-472b-8a57-5aa577c32687/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4493,4506] [2022-11-21 13:45:53,020 WARN L237 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_10821448-eb55-472b-8a57-5aa577c32687/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i[4553,4566] [2022-11-21 13:45:53,069 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,070 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,070 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,071 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,072 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,082 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,084 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,086 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,087 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,087 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,088 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,089 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,089 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,124 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-21 13:45:53,125 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-21 13:45:53,126 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-21 13:45:53,127 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-21 13:45:53,128 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-21 13:45:53,128 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-21 13:45:53,129 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-21 13:45:53,129 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-21 13:45:53,129 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-21 13:45:53,130 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-21 13:45:53,166 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-21 13:45:53,275 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,276 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,284 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,285 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,287 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,288 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,302 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,304 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,304 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,305 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,306 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,306 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,307 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 13:45:53,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:45:53,679 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:45:53,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:53 WrapperNode [2022-11-21 13:45:53,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:45:53,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:45:53,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:45:53,682 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:45:53,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:53" (1/1) ... [2022-11-21 13:45:53,805 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:53" (1/1) ... [2022-11-21 13:45:53,929 INFO L138 Inliner]: procedures = 774, calls = 2454, calls flagged for inlining = 69, calls inlined = 20, statements flattened = 837 [2022-11-21 13:45:53,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:45:53,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:45:53,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:45:53,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:45:53,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:53" (1/1) ... [2022-11-21 13:45:53,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:53" (1/1) ... [2022-11-21 13:45:53,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:53" (1/1) ... [2022-11-21 13:45:53,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:53" (1/1) ... [2022-11-21 13:45:54,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:53" (1/1) ... [2022-11-21 13:45:54,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:53" (1/1) ... [2022-11-21 13:45:54,053 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:53" (1/1) ... [2022-11-21 13:45:54,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:53" (1/1) ... [2022-11-21 13:45:54,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:45:54,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:45:54,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:45:54,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:45:54,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:53" (1/1) ... [2022-11-21 13:45:54,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:45:54,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:45:54,128 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:45:54,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:45:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-21 13:45:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 13:45:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-21 13:45:54,180 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-21 13:45:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-21 13:45:54,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-21 13:45:54,182 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-11-21 13:45:54,182 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-11-21 13:45:54,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 13:45:54,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:45:54,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 13:45:54,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:45:54,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:45:54,183 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-21 13:45:54,183 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-21 13:45:54,184 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-21 13:45:54,184 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-21 13:45:54,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 13:45:54,184 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-21 13:45:54,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-21 13:45:54,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 13:45:54,185 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-21 13:45:54,185 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-21 13:45:54,185 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_find [2022-11-21 13:45:54,185 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_find [2022-11-21 13:45:54,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 13:45:54,186 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2022-11-21 13:45:54,186 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2022-11-21 13:45:54,186 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-11-21 13:45:54,186 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-11-21 13:45:54,186 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2022-11-21 13:45:54,187 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2022-11-21 13:45:54,187 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2022-11-21 13:45:54,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2022-11-21 13:45:54,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 13:45:54,188 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-11-21 13:45:54,188 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-11-21 13:45:54,188 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2022-11-21 13:45:54,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2022-11-21 13:45:54,188 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2022-11-21 13:45:54,188 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2022-11-21 13:45:54,189 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2022-11-21 13:45:54,190 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2022-11-21 13:45:54,193 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-21 13:45:54,194 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-21 13:45:54,194 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-11-21 13:45:54,195 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-11-21 13:45:54,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-21 13:45:54,195 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-21 13:45:54,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-21 13:45:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-21 13:45:54,197 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-21 13:45:54,202 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2022-11-21 13:45:54,202 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2022-11-21 13:45:54,202 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-21 13:45:54,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-21 13:45:54,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:45:54,675 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:45:54,680 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:45:54,843 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2022-11-21 13:45:54,891 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2022-11-21 13:45:55,221 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !true; [2022-11-21 13:45:55,983 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:45:56,006 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:45:56,006 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-21 13:45:56,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:45:56 BoogieIcfgContainer [2022-11-21 13:45:56,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:45:56,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:45:56,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:45:56,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:45:56,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:45:49" (1/3) ... [2022-11-21 13:45:56,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7d30ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:45:56, skipping insertion in model container [2022-11-21 13:45:56,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:53" (2/3) ... [2022-11-21 13:45:56,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7d30ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:45:56, skipping insertion in model container [2022-11-21 13:45:56,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:45:56" (3/3) ... [2022-11-21 13:45:56,018 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_find_harness.i [2022-11-21 13:45:56,042 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:45:56,042 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 13:45:56,100 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:45:56,107 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@34e7873d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:45:56,107 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 13:45:56,112 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) [2022-11-21 13:45:56,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-21 13:45:56,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:45:56,130 INFO L195 NwaCegarLoop]: 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] [2022-11-21 13:45:56,131 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:45:56,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:56,137 INFO L85 PathProgramCache]: Analyzing trace with hash 2109277801, now seen corresponding path program 1 times [2022-11-21 13:45:56,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:56,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354583278] [2022-11-21 13:45:56,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:56,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:56,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:56,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354583278] [2022-11-21 13:45:56,732 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-21 13:45:56,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136127069] [2022-11-21 13:45:56,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:56,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:56,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:45:56,737 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:45:56,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 13:45:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:57,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-21 13:45:57,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:45:57,573 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2022-11-21 13:45:57,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:45:57,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136127069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:57,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:57,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:45:57,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192759306] [2022-11-21 13:45:57,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:57,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 13:45:57,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:57,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 13:45:57,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 13:45:57,639 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) [2022-11-21 13:45:57,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:45:57,731 INFO L93 Difference]: Finished difference Result 486 states and 686 transitions. [2022-11-21 13:45:57,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 13:45:57,733 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 [2022-11-21 13:45:57,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:45:57,749 INFO L225 Difference]: With dead ends: 486 [2022-11-21 13:45:57,749 INFO L226 Difference]: Without dead ends: 239 [2022-11-21 13:45:57,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 13:45:57,761 INFO L413 NwaCegarLoop]: 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 [2022-11-21 13:45:57,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:45:57,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-21 13:45:57,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-11-21 13:45:57,840 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) [2022-11-21 13:45:57,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 312 transitions. [2022-11-21 13:45:57,844 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 312 transitions. Word has length 182 [2022-11-21 13:45:57,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:45:57,845 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 312 transitions. [2022-11-21 13:45:57,845 INFO L496 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) [2022-11-21 13:45:57,846 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 312 transitions. [2022-11-21 13:45:57,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-21 13:45:57,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:45:57,850 INFO L195 NwaCegarLoop]: 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] [2022-11-21 13:45:57,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 13:45:58,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-21 13:45:58,051 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:45:58,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:58,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1716640621, now seen corresponding path program 1 times [2022-11-21 13:45:58,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:58,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702166033] [2022-11-21 13:45:58,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:58,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:58,180 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:45:58,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2069041705] [2022-11-21 13:45:58,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:58,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:58,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:45:58,183 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:45:58,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 13:45:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:58,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 13:45:58,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:45:59,088 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2022-11-21 13:45:59,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:45:59,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:59,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702166033] [2022-11-21 13:45:59,089 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:45:59,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069041705] [2022-11-21 13:45:59,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069041705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:59,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:59,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:45:59,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976470364] [2022-11-21 13:45:59,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:59,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:45:59,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:59,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:45:59,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:45:59,098 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) [2022-11-21 13:45:59,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:45:59,456 INFO L93 Difference]: Finished difference Result 464 states and 608 transitions. [2022-11-21 13:45:59,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 13:45:59,457 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 [2022-11-21 13:45:59,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:45:59,461 INFO L225 Difference]: With dead ends: 464 [2022-11-21 13:45:59,462 INFO L226 Difference]: Without dead ends: 246 [2022-11-21 13:45:59,463 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:45:59,464 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 325 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:45:59,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 1037 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:45:59,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-21 13:45:59,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2022-11-21 13:45:59,512 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) [2022-11-21 13:45:59,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 322 transitions. [2022-11-21 13:45:59,514 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 322 transitions. Word has length 182 [2022-11-21 13:45:59,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:45:59,515 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 322 transitions. [2022-11-21 13:45:59,515 INFO L496 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) [2022-11-21 13:45:59,516 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 322 transitions. [2022-11-21 13:45:59,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-21 13:45:59,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:45:59,519 INFO L195 NwaCegarLoop]: 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] [2022-11-21 13:45:59,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 13:45:59,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:59,720 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:45:59,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:59,721 INFO L85 PathProgramCache]: Analyzing trace with hash 421077933, now seen corresponding path program 1 times [2022-11-21 13:45:59,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:59,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589713790] [2022-11-21 13:45:59,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:59,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:59,843 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:45:59,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1434142023] [2022-11-21 13:45:59,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:59,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:59,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:45:59,845 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:45:59,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 13:46:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:00,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 2693 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 13:46:00,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:46:00,701 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2022-11-21 13:46:00,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:46:00,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:46:00,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589713790] [2022-11-21 13:46:00,702 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:46:00,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434142023] [2022-11-21 13:46:00,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434142023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:46:00,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:46:00,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:46:00,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392759618] [2022-11-21 13:46:00,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:46:00,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:46:00,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:46:00,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:46:00,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:46:00,705 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) [2022-11-21 13:46:01,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:46:01,181 INFO L93 Difference]: Finished difference Result 404 states and 531 transitions. [2022-11-21 13:46:01,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 13:46:01,182 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 [2022-11-21 13:46:01,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:46:01,187 INFO L225 Difference]: With dead ends: 404 [2022-11-21 13:46:01,187 INFO L226 Difference]: Without dead ends: 239 [2022-11-21 13:46:01,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:46:01,194 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 322 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:46:01,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 1509 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 13:46:01,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-21 13:46:01,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-11-21 13:46:01,243 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) [2022-11-21 13:46:01,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 311 transitions. [2022-11-21 13:46:01,247 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 311 transitions. Word has length 182 [2022-11-21 13:46:01,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:46:01,248 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 311 transitions. [2022-11-21 13:46:01,248 INFO L496 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) [2022-11-21 13:46:01,249 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 311 transitions. [2022-11-21 13:46:01,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-21 13:46:01,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:46:01,259 INFO L195 NwaCegarLoop]: 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] [2022-11-21 13:46:01,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 13:46:01,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:46:01,469 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:46:01,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:46:01,470 INFO L85 PathProgramCache]: Analyzing trace with hash -238453589, now seen corresponding path program 1 times [2022-11-21 13:46:01,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:46:01,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216434991] [2022-11-21 13:46:01,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:01,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:46:01,589 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:46:01,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276204563] [2022-11-21 13:46:01,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:01,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:46:01,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:46:01,591 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:46:01,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 13:46:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:02,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 2698 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 13:46:02,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:46:02,301 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-11-21 13:46:02,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:46:02,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:46:02,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216434991] [2022-11-21 13:46:02,302 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:46:02,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276204563] [2022-11-21 13:46:02,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276204563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:46:02,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:46:02,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:46:02,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564383725] [2022-11-21 13:46:02,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:46:02,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:46:02,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:46:02,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:46:02,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:46:02,305 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) [2022-11-21 13:46:02,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:46:02,349 INFO L93 Difference]: Finished difference Result 474 states and 616 transitions. [2022-11-21 13:46:02,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:46:02,350 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 [2022-11-21 13:46:02,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:46:02,352 INFO L225 Difference]: With dead ends: 474 [2022-11-21 13:46:02,352 INFO L226 Difference]: Without dead ends: 244 [2022-11-21 13:46:02,353 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:46:02,354 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 2 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:46:02,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1227 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:46:02,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-21 13:46:02,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2022-11-21 13:46:02,403 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) [2022-11-21 13:46:02,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 316 transitions. [2022-11-21 13:46:02,406 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 316 transitions. Word has length 182 [2022-11-21 13:46:02,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:46:02,406 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 316 transitions. [2022-11-21 13:46:02,407 INFO L496 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) [2022-11-21 13:46:02,407 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 316 transitions. [2022-11-21 13:46:02,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-21 13:46:02,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:46:02,410 INFO L195 NwaCegarLoop]: 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] [2022-11-21 13:46:02,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 13:46:02,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:46:02,621 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:46:02,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:46:02,621 INFO L85 PathProgramCache]: Analyzing trace with hash -168770197, now seen corresponding path program 1 times [2022-11-21 13:46:02,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:46:02,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634427148] [2022-11-21 13:46:02,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:02,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:46:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:04,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:46:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:04,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 13:46:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:04,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:46:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:04,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 13:46:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:04,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:46:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:04,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:46:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:04,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:46:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:04,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:46:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:04,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 13:46:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:04,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 13:46:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:04,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:46:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:04,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 13:46:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:04,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-21 13:46:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:04,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 13:46:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:05,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 13:46:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:05,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-21 13:46:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:05,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-21 13:46:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:05,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-21 13:46:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:05,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:46:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:05,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:46:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:05,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:46:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:05,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-21 13:46:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:05,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-21 13:46:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:05,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-21 13:46:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:05,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-21 13:46:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:05,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-21 13:46:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:05,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-21 13:46:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:05,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-11-21 13:46:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:05,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-21 13:46:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:05,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-21 13:46:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:05,284 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2022-11-21 13:46:05,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:46:05,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634427148] [2022-11-21 13:46:05,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634427148] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:46:05,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776352350] [2022-11-21 13:46:05,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:05,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:46:05,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:46:05,286 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:46:05,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 13:46:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:05,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-21 13:46:05,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:46:06,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 13:46:06,459 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2022-11-21 13:46:06,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:46:06,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776352350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:46:06,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:46:06,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 21 [2022-11-21 13:46:06,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506129639] [2022-11-21 13:46:06,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:46:06,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 13:46:06,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:46:06,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 13:46:06,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-11-21 13:46:06,462 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) [2022-11-21 13:46:08,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-21 13:46:10,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:46:13,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:46:15,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:46:17,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:46:19,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:46:21,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:46:23,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:46:25,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:46:27,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:46:29,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:46:31,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:46:33,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:46:35,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:46:37,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:46:37,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:46:37,991 INFO L93 Difference]: Finished difference Result 537 states and 682 transitions. [2022-11-21 13:46:37,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 13:46:37,991 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 [2022-11-21 13:46:37,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:46:37,993 INFO L225 Difference]: With dead ends: 537 [2022-11-21 13:46:37,994 INFO L226 Difference]: Without dead ends: 311 [2022-11-21 13:46:37,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2022-11-21 13:46:37,995 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 123 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 30 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 2023 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:46:37,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 2023 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 417 Invalid, 15 Unknown, 0 Unchecked, 31.3s Time] [2022-11-21 13:46:37,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-11-21 13:46:38,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 310. [2022-11-21 13:46:38,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 196 states have (on average 1.1683673469387754) internal successors, (229), 197 states have internal predecessors, (229), 79 states have call successors, (79), 33 states have call predecessors, (79), 34 states have return successors, (82), 79 states have call predecessors, (82), 78 states have call successors, (82) [2022-11-21 13:46:38,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 390 transitions. [2022-11-21 13:46:38,020 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 390 transitions. Word has length 194 [2022-11-21 13:46:38,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:46:38,021 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 390 transitions. [2022-11-21 13:46:38,021 INFO L496 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) [2022-11-21 13:46:38,021 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 390 transitions. [2022-11-21 13:46:38,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-21 13:46:38,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:46:38,024 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:46:38,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 13:46:38,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:46:38,235 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:46:38,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:46:38,236 INFO L85 PathProgramCache]: Analyzing trace with hash -895286759, now seen corresponding path program 1 times [2022-11-21 13:46:38,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:46:38,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074949022] [2022-11-21 13:46:38,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:38,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:46:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:38,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:46:38,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074949022] [2022-11-21 13:46:38,403 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-21 13:46:38,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280001849] [2022-11-21 13:46:38,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:38,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:46:38,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:46:38,405 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:46:38,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 13:46:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:39,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 2834 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 13:46:39,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:46:39,176 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-21 13:46:39,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:46:39,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280001849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:46:39,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:46:39,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:46:39,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107980194] [2022-11-21 13:46:39,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:46:39,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:46:39,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:46:39,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:46:39,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:46:39,179 INFO L87 Difference]: Start difference. First operand 310 states and 390 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-21 13:46:39,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:46:39,225 INFO L93 Difference]: Finished difference Result 572 states and 721 transitions. [2022-11-21 13:46:39,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:46:39,226 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), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 206 [2022-11-21 13:46:39,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:46:39,235 INFO L225 Difference]: With dead ends: 572 [2022-11-21 13:46:39,235 INFO L226 Difference]: Without dead ends: 315 [2022-11-21 13:46:39,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:46:39,238 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 2 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:46:39,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1227 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:46:39,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-11-21 13:46:39,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2022-11-21 13:46:39,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 200 states have (on average 1.165) internal successors, (233), 201 states have internal predecessors, (233), 79 states have call successors, (79), 33 states have call predecessors, (79), 35 states have return successors, (83), 80 states have call predecessors, (83), 78 states have call successors, (83) [2022-11-21 13:46:39,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 395 transitions. [2022-11-21 13:46:39,274 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 395 transitions. Word has length 206 [2022-11-21 13:46:39,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:46:39,276 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 395 transitions. [2022-11-21 13:46:39,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-21 13:46:39,276 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 395 transitions. [2022-11-21 13:46:39,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-21 13:46:39,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:46:39,281 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:46:39,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 13:46:39,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-21 13:46:39,493 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:46:39,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:46:39,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1850808038, now seen corresponding path program 1 times [2022-11-21 13:46:39,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:46:39,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664928363] [2022-11-21 13:46:39,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:39,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:46:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:39,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:46:39,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664928363] [2022-11-21 13:46:39,658 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-21 13:46:39,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332577980] [2022-11-21 13:46:39,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:39,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:46:39,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:46:39,659 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:46:39,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 13:46:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:40,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 2835 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-21 13:46:40,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:46:42,619 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= 0 (select (select |c_#memory_$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 [2022-11-21 13:46:48,680 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 13:46:54,744 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 13:46:54,771 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-11-21 13:46:54,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:46:54,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332577980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:46:54,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:46:54,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:46:54,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453711395] [2022-11-21 13:46:54,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:46:54,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:46:54,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:46:54,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:46:54,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=32, Unknown=1, NotChecked=10, Total=56 [2022-11-21 13:46:54,775 INFO L87 Difference]: Start difference. First operand 315 states and 395 transitions. Second operand has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-21 13:46:56,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:47:03,215 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 13:47:05,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:47:05,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:05,765 INFO L93 Difference]: Finished difference Result 562 states and 711 transitions. [2022-11-21 13:47:05,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:47:05,766 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) Word has length 206 [2022-11-21 13:47:05,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:05,769 INFO L225 Difference]: With dead ends: 562 [2022-11-21 13:47:05,769 INFO L226 Difference]: Without dead ends: 322 [2022-11-21 13:47:05,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=32, Invalid=81, Unknown=1, NotChecked=18, Total=132 [2022-11-21 13:47:05,771 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 12 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 322 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:05,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1660 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 202 Invalid, 2 Unknown, 322 Unchecked, 4.7s Time] [2022-11-21 13:47:05,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-11-21 13:47:05,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 321. [2022-11-21 13:47:05,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 204 states have (on average 1.1568627450980393) internal successors, (236), 205 states have internal predecessors, (236), 80 states have call successors, (80), 34 states have call predecessors, (80), 36 states have return successors, (84), 81 states have call predecessors, (84), 79 states have call successors, (84) [2022-11-21 13:47:05,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 400 transitions. [2022-11-21 13:47:05,794 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 400 transitions. Word has length 206 [2022-11-21 13:47:05,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:05,794 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 400 transitions. [2022-11-21 13:47:05,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-21 13:47:05,795 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 400 transitions. [2022-11-21 13:47:05,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-21 13:47:05,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:05,798 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:47:05,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 13:47:06,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:47:06,010 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:06,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:06,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1635421735, now seen corresponding path program 1 times [2022-11-21 13:47:06,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:06,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775732756] [2022-11-21 13:47:06,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:06,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:06,126 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:47:06,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [236609954] [2022-11-21 13:47:06,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:06,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:47:06,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:47:06,128 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:47:06,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 13:47:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:06,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 2865 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-21 13:47:06,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:47:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 30 proven. 9 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2022-11-21 13:47:07,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:47:07,305 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2022-11-21 13:47:07,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:07,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775732756] [2022-11-21 13:47:07,306 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:47:07,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236609954] [2022-11-21 13:47:07,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236609954] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 13:47:07,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:47:07,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2022-11-21 13:47:07,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655926952] [2022-11-21 13:47:07,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:07,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:47:07,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:07,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:47:07,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:47:07,308 INFO L87 Difference]: Start difference. First operand 321 states and 400 transitions. Second operand has 5 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2022-11-21 13:47:07,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:07,386 INFO L93 Difference]: Finished difference Result 329 states and 407 transitions. [2022-11-21 13:47:07,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 13:47:07,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 211 [2022-11-21 13:47:07,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:07,390 INFO L225 Difference]: With dead ends: 329 [2022-11-21 13:47:07,390 INFO L226 Difference]: Without dead ends: 327 [2022-11-21 13:47:07,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:47:07,392 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 13 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:07,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1211 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:47:07,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-21 13:47:07,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 325. [2022-11-21 13:47:07,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 207 states have (on average 1.1545893719806763) internal successors, (239), 208 states have internal predecessors, (239), 80 states have call successors, (80), 35 states have call predecessors, (80), 37 states have return successors, (84), 81 states have call predecessors, (84), 79 states have call successors, (84) [2022-11-21 13:47:07,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 403 transitions. [2022-11-21 13:47:07,425 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 403 transitions. Word has length 211 [2022-11-21 13:47:07,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:07,427 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 403 transitions. [2022-11-21 13:47:07,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2022-11-21 13:47:07,428 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 403 transitions. [2022-11-21 13:47:07,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-21 13:47:07,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:07,432 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:47:07,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 13:47:07,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:47:07,644 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:07,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:07,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1252238414, now seen corresponding path program 1 times [2022-11-21 13:47:07,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:07,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477788945] [2022-11-21 13:47:07,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:07,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:07,754 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:47:07,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799403368] [2022-11-21 13:47:07,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:07,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:47:07,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:47:07,756 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:47:07,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 13:47:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:08,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 2899 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 13:47:08,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:47:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 32 proven. 9 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2022-11-21 13:47:08,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:47:08,910 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2022-11-21 13:47:08,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:08,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477788945] [2022-11-21 13:47:08,911 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:47:08,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799403368] [2022-11-21 13:47:08,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799403368] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 13:47:08,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:47:08,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2022-11-21 13:47:08,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978539143] [2022-11-21 13:47:08,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:08,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:47:08,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:08,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:47:08,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:47:08,913 INFO L87 Difference]: Start difference. First operand 325 states and 403 transitions. Second operand has 5 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2022-11-21 13:47:08,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:08,990 INFO L93 Difference]: Finished difference Result 333 states and 410 transitions. [2022-11-21 13:47:08,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 13:47:08,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 230 [2022-11-21 13:47:08,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:08,993 INFO L225 Difference]: With dead ends: 333 [2022-11-21 13:47:08,994 INFO L226 Difference]: Without dead ends: 331 [2022-11-21 13:47:08,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:47:08,995 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 6 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:08,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1222 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:47:08,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-11-21 13:47:09,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2022-11-21 13:47:09,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 210 states have (on average 1.1523809523809523) internal successors, (242), 211 states have internal predecessors, (242), 80 states have call successors, (80), 36 states have call predecessors, (80), 38 states have return successors, (84), 81 states have call predecessors, (84), 79 states have call successors, (84) [2022-11-21 13:47:09,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 406 transitions. [2022-11-21 13:47:09,024 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 406 transitions. Word has length 230 [2022-11-21 13:47:09,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:09,027 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 406 transitions. [2022-11-21 13:47:09,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2022-11-21 13:47:09,028 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 406 transitions. [2022-11-21 13:47:09,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-11-21 13:47:09,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:09,031 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:47:09,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 13:47:09,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:47:09,244 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:09,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:09,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1085734471, now seen corresponding path program 1 times [2022-11-21 13:47:09,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:09,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079871741] [2022-11-21 13:47:09,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:09,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:09,350 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:47:09,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422245572] [2022-11-21 13:47:09,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:09,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:47:09,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:47:09,352 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:47:09,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 13:47:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:10,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 2986 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 13:47:10,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:47:10,174 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2022-11-21 13:47:10,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:47:10,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:10,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079871741] [2022-11-21 13:47:10,175 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:47:10,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422245572] [2022-11-21 13:47:10,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422245572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:10,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:10,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:47:10,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268560511] [2022-11-21 13:47:10,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:10,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:47:10,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:10,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:47:10,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:47:10,180 INFO L87 Difference]: Start difference. First operand 329 states and 406 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-21 13:47:10,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:10,267 INFO L93 Difference]: Finished difference Result 408 states and 502 transitions. [2022-11-21 13:47:10,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:47:10,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) Word has length 231 [2022-11-21 13:47:10,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:10,270 INFO L225 Difference]: With dead ends: 408 [2022-11-21 13:47:10,270 INFO L226 Difference]: Without dead ends: 338 [2022-11-21 13:47:10,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:47:10,271 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 3 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:10,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1230 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:47:10,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-11-21 13:47:10,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 333. [2022-11-21 13:47:10,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 213 states have (on average 1.1502347417840375) internal successors, (245), 214 states have internal predecessors, (245), 80 states have call successors, (80), 36 states have call predecessors, (80), 39 states have return successors, (85), 82 states have call predecessors, (85), 79 states have call successors, (85) [2022-11-21 13:47:10,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 410 transitions. [2022-11-21 13:47:10,294 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 410 transitions. Word has length 231 [2022-11-21 13:47:10,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:10,295 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 410 transitions. [2022-11-21 13:47:10,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-21 13:47:10,295 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 410 transitions. [2022-11-21 13:47:10,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-11-21 13:47:10,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:10,299 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:47:10,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 13:47:10,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:47:10,520 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:10,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:10,520 INFO L85 PathProgramCache]: Analyzing trace with hash 498928457, now seen corresponding path program 1 times [2022-11-21 13:47:10,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:10,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961469586] [2022-11-21 13:47:10,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:10,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:10,634 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:47:10,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136415830] [2022-11-21 13:47:10,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:10,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:47:10,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:47:10,636 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:47:10,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 13:47:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:11,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 2985 conjuncts, 141 conjunts are in the unsatisfiable core [2022-11-21 13:47:11,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:47:11,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 13:47:11,906 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-21 13:47:11,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-21 13:47:11,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 13:47:12,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-21 13:47:12,242 INFO L321 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2022-11-21 13:47:12,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 53 [2022-11-21 13:47:12,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 13:47:12,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:47:12,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-21 13:47:12,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 13:47:12,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:47:12,541 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-21 13:47:12,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 34 [2022-11-21 13:47:13,036 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-21 13:47:13,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-21 13:47:13,067 INFO L321 Elim1Store]: treesize reduction 51, result has 8.9 percent of original size [2022-11-21 13:47:13,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 98 [2022-11-21 13:47:13,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 60 [2022-11-21 13:47:13,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2022-11-21 13:47:14,251 INFO L321 Elim1Store]: treesize reduction 42, result has 44.0 percent of original size [2022-11-21 13:47:14,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 158 treesize of output 179 [2022-11-21 13:47:14,269 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 13:47:14,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 143 [2022-11-21 13:47:14,569 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-21 13:47:14,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-21 13:47:14,825 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2710 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2710))) is different from true [2022-11-21 13:47:14,956 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2711 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_2711) |c_#memory_$Pointer$.base|)) is different from true [2022-11-21 13:47:15,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:47:15,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:47:15,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 29 [2022-11-21 13:47:15,097 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-21 13:47:15,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-11-21 13:47:17,177 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_50| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_50|) 0))) (and (not (= .cse0 0)) (<= (+ 2 .cse0) |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_50|)))) is different from true [2022-11-21 13:47:19,344 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_51| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_51|) 0))) (and (<= (+ .cse0 2) |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_51|) (not (= .cse0 0))))) is different from true [2022-11-21 13:47:21,482 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_52| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_52|) 0))) (and (<= (+ .cse0 2) |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_52|) (not (= .cse0 0))))) is different from true [2022-11-21 13:47:23,597 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_53| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_53|) 0))) (and (<= (+ 2 .cse0) |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_53|) (not (= .cse0 0))))) is different from true [2022-11-21 13:47:25,821 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_aws_hash_table_find_~map.base_BEFORE_CALL_2 Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| v_aws_hash_table_find_~map.base_BEFORE_CALL_2) 0))) (and (<= (+ 2 .cse0) v_aws_hash_table_find_~map.base_BEFORE_CALL_2) (not (= .cse0 0))))) is different from true [2022-11-21 13:47:27,958 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_aws_hash_table_find_~map.base_BEFORE_CALL_3 Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| v_aws_hash_table_find_~map.base_BEFORE_CALL_3) 0))) (and (not (= .cse0 0)) (<= (+ 2 .cse0) v_aws_hash_table_find_~map.base_BEFORE_CALL_3)))) is different from true [2022-11-21 13:47:30,067 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_aws_hash_table_find_~map.base_BEFORE_CALL_4 Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| v_aws_hash_table_find_~map.base_BEFORE_CALL_4) 0))) (and (not (= .cse0 0)) (<= (+ .cse0 2) v_aws_hash_table_find_~map.base_BEFORE_CALL_4)))) is different from true [2022-11-21 13:47:30,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-21 13:47:30,361 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 66 proven. 106 refuted. 31 times theorem prover too weak. 24 trivial. 204 not checked. [2022-11-21 13:47:30,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:47:30,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:30,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961469586] [2022-11-21 13:47:30,988 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:47:30,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136415830] [2022-11-21 13:47:30,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136415830] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:47:30,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:47:30,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2022-11-21 13:47:30,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001430609] [2022-11-21 13:47:30,989 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-21 13:47:30,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-21 13:47:30,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:30,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-21 13:47:30,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1290, Unknown=27, NotChecked=720, Total=2162 [2022-11-21 13:47:30,991 INFO L87 Difference]: Start difference. First operand 333 states and 410 transitions. Second operand has 41 states, 36 states have (on average 3.9444444444444446) internal successors, (142), 37 states have internal predecessors, (142), 19 states have call successors, (38), 16 states have call predecessors, (38), 20 states have return successors, (36), 17 states have call predecessors, (36), 19 states have call successors, (36) [2022-11-21 13:47:33,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:47:35,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:47:57,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:57,895 INFO L93 Difference]: Finished difference Result 759 states and 943 transitions. [2022-11-21 13:47:57,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-21 13:47:57,895 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 36 states have (on average 3.9444444444444446) internal successors, (142), 37 states have internal predecessors, (142), 19 states have call successors, (38), 16 states have call predecessors, (38), 20 states have return successors, (36), 17 states have call predecessors, (36), 19 states have call successors, (36) Word has length 231 [2022-11-21 13:47:57,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:57,899 INFO L225 Difference]: With dead ends: 759 [2022-11-21 13:47:57,899 INFO L226 Difference]: Without dead ends: 605 [2022-11-21 13:47:57,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 256 SyntacticMatches, 33 SemanticMatches, 92 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 2087 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=636, Invalid=6439, Unknown=101, NotChecked=1566, Total=8742 [2022-11-21 13:47:57,903 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 846 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 7441 mSolverCounterSat, 699 mSolverCounterUnsat, 360 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 13700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 699 IncrementalHoareTripleChecker+Valid, 7441 IncrementalHoareTripleChecker+Invalid, 360 IncrementalHoareTripleChecker+Unknown, 5200 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:57,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1414 Invalid, 13700 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [699 Valid, 7441 Invalid, 360 Unknown, 5200 Unchecked, 22.2s Time] [2022-11-21 13:47:57,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-11-21 13:47:57,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 576. [2022-11-21 13:47:57,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 367 states have (on average 1.1498637602179838) internal successors, (422), 369 states have internal predecessors, (422), 135 states have call successors, (135), 67 states have call predecessors, (135), 73 states have return successors, (149), 139 states have call predecessors, (149), 134 states have call successors, (149) [2022-11-21 13:47:57,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 706 transitions. [2022-11-21 13:47:57,964 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 706 transitions. Word has length 231 [2022-11-21 13:47:57,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:57,964 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 706 transitions. [2022-11-21 13:47:57,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 36 states have (on average 3.9444444444444446) internal successors, (142), 37 states have internal predecessors, (142), 19 states have call successors, (38), 16 states have call predecessors, (38), 20 states have return successors, (36), 17 states have call predecessors, (36), 19 states have call successors, (36) [2022-11-21 13:47:57,965 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 706 transitions. [2022-11-21 13:47:57,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-21 13:47:57,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:57,969 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:47:57,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 13:47:58,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 13:47:58,186 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:58,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:58,187 INFO L85 PathProgramCache]: Analyzing trace with hash -335517717, now seen corresponding path program 1 times [2022-11-21 13:47:58,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:58,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558604216] [2022-11-21 13:47:58,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:58,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:58,294 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:47:58,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958801629] [2022-11-21 13:47:58,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:58,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:47:58,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:47:58,296 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:47:58,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-21 13:47:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:59,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 3018 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-21 13:47:59,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:00,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 13:48:00,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 13:48:00,249 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 184 proven. 22 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2022-11-21 13:48:00,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:48:00,809 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-21 13:48:00,809 INFO L350 Elim1Store]: Elim1 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 [2022-11-21 13:48:00,822 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-11-21 13:48:00,822 INFO L350 Elim1Store]: Elim1 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 [2022-11-21 13:48:00,950 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-11-21 13:48:00,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:00,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558604216] [2022-11-21 13:48:00,951 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:48:00,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958801629] [2022-11-21 13:48:00,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958801629] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:48:00,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:48:00,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 23 [2022-11-21 13:48:00,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740773826] [2022-11-21 13:48:00,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:48:00,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 13:48:00,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:00,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 13:48:00,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2022-11-21 13:48:00,954 INFO L87 Difference]: Start difference. First operand 576 states and 706 transitions. Second operand has 23 states, 20 states have (on average 7.3) internal successors, (146), 21 states have internal predecessors, (146), 12 states have call successors, (63), 5 states have call predecessors, (63), 6 states have return successors, (60), 9 states have call predecessors, (60), 12 states have call successors, (60) [2022-11-21 13:48:03,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:03,647 INFO L93 Difference]: Finished difference Result 1205 states and 1509 transitions. [2022-11-21 13:48:03,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-21 13:48:03,651 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 7.3) internal successors, (146), 21 states have internal predecessors, (146), 12 states have call successors, (63), 5 states have call predecessors, (63), 6 states have return successors, (60), 9 states have call predecessors, (60), 12 states have call successors, (60) Word has length 242 [2022-11-21 13:48:03,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:03,656 INFO L225 Difference]: With dead ends: 1205 [2022-11-21 13:48:03,656 INFO L226 Difference]: Without dead ends: 770 [2022-11-21 13:48:03,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 453 SyntacticMatches, 9 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=188, Invalid=1372, Unknown=0, NotChecked=0, Total=1560 [2022-11-21 13:48:03,659 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 321 mSDsluCounter, 4225 mSDsCounter, 0 mSdLazyCounter, 1683 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 4567 SdHoareTripleChecker+Invalid, 1779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:03,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 4567 Invalid, 1779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1683 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-21 13:48:03,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2022-11-21 13:48:03,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 751. [2022-11-21 13:48:03,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 475 states have (on average 1.1536842105263159) internal successors, (548), 479 states have internal predecessors, (548), 181 states have call successors, (181), 84 states have call predecessors, (181), 94 states have return successors, (209), 187 states have call predecessors, (209), 179 states have call successors, (209) [2022-11-21 13:48:03,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 938 transitions. [2022-11-21 13:48:03,759 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 938 transitions. Word has length 242 [2022-11-21 13:48:03,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:03,761 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 938 transitions. [2022-11-21 13:48:03,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 7.3) internal successors, (146), 21 states have internal predecessors, (146), 12 states have call successors, (63), 5 states have call predecessors, (63), 6 states have return successors, (60), 9 states have call predecessors, (60), 12 states have call successors, (60) [2022-11-21 13:48:03,761 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 938 transitions. [2022-11-21 13:48:03,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-11-21 13:48:03,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:03,764 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:03,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-21 13:48:03,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:48:03,978 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:48:03,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:03,979 INFO L85 PathProgramCache]: Analyzing trace with hash -457141301, now seen corresponding path program 1 times [2022-11-21 13:48:03,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:03,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380199201] [2022-11-21 13:48:03,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:03,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:04,134 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:48:04,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [703821578] [2022-11-21 13:48:04,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:04,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:48:04,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:48:04,136 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:48:04,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-21 13:48:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:05,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 3030 conjuncts, 185 conjunts are in the unsatisfiable core [2022-11-21 13:48:05,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:05,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 13:48:05,372 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-21 13:48:05,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-21 13:48:05,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 13:48:05,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-21 13:48:05,678 INFO L321 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2022-11-21 13:48:05,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 53 [2022-11-21 13:48:05,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 13:48:05,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:48:05,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-21 13:48:05,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 13:48:05,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 13:48:05,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-21 13:48:06,440 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 13:48:06,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-21 13:48:06,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:48:06,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2022-11-21 13:48:06,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:48:06,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 13:48:06,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 13:48:06,910 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 13:48:06,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-21 13:48:06,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 13:48:07,097 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-21 13:48:07,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-21 13:48:07,349 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3328 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3328))) (exists ((v_ArrVal_3329 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3329) |c_#memory_$Pointer$.base|))) is different from true [2022-11-21 13:48:07,527 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3331 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_3331))) (exists ((v_ArrVal_3330 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_3330)))) is different from true [2022-11-21 13:48:07,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:48:07,692 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 13:48:07,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 25 [2022-11-21 13:48:07,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:48:07,716 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 13:48:07,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 25 [2022-11-21 13:48:07,743 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-21 13:48:07,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 13:48:07,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-11-21 13:48:07,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-11-21 13:48:22,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-11-21 13:48:22,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-11-21 13:48:37,110 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 257 proven. 157 refuted. 3 times theorem prover too weak. 67 trivial. 3 not checked. [2022-11-21 13:48:37,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:48:37,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:37,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380199201] [2022-11-21 13:48:37,744 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:48:37,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703821578] [2022-11-21 13:48:37,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703821578] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:48:37,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:48:37,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2022-11-21 13:48:37,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830678009] [2022-11-21 13:48:37,745 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-21 13:48:37,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-21 13:48:37,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:37,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-21 13:48:37,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1470, Unknown=40, NotChecked=158, Total=1806 [2022-11-21 13:48:37,747 INFO L87 Difference]: Start difference. First operand 751 states and 938 transitions. Second operand has 37 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 34 states have internal predecessors, (132), 18 states have call successors, (39), 10 states have call predecessors, (39), 14 states have return successors, (37), 17 states have call predecessors, (37), 18 states have call successors, (37) [2022-11-21 13:48:39,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:48:42,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:48:44,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:48:55,508 WARN L233 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 13:49:05,833 WARN L233 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 13:49:16,003 WARN L233 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 13:49:18,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-21 13:49:24,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:49:26,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:49:28,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:49:34,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:49:36,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:49:38,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:49:40,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:49:50,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:50:03,041 WARN L233 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 13:50:05,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:50:17,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:50:19,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:50:27,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:50:29,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:50:31,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:50:33,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:50:35,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:50:37,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:50:43,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:50:45,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:50:58,001 WARN L233 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 13:51:00,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:51:02,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:51:06,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:51:08,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:51:10,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:51:12,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:51:14,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:51:16,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:51:18,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:51:20,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:51:24,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:51:26,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:51:28,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:51:30,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:51:36,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:51:38,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:51:43,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:51:49,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:51:51,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:51:53,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:51:57,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:51:59,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:52:01,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:52:03,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:52:11,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:52:13,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:52:15,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:52:17,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:52:34,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:52:36,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-21 13:52:38,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:52:40,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:52:42,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:52:44,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:52:46,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:52:48,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:52:50,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:52:52,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:52:58,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:53:00,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:53:02,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:53:04,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:53:06,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:53:08,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:53:10,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:53:12,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:53:16,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:53:18,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:53:20,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:53:22,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:53:24,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:53:26,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:53:28,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:53:30,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:53:33,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:53:36,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:53:42,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:53:44,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:53:46,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:53:49,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:53:51,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:53:53,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:53:55,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:54:01,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:54:03,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:54:05,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:54:07,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:54:10,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:54:13,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:54:16,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:54:18,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:54:20,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:54:20,171 INFO L93 Difference]: Finished difference Result 1116 states and 1375 transitions. [2022-11-21 13:54:20,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-21 13:54:20,172 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 34 states have internal predecessors, (132), 18 states have call successors, (39), 10 states have call predecessors, (39), 14 states have return successors, (37), 17 states have call predecessors, (37), 18 states have call successors, (37) Word has length 238 [2022-11-21 13:54:20,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:54:20,177 INFO L225 Difference]: With dead ends: 1116 [2022-11-21 13:54:20,177 INFO L226 Difference]: Without dead ends: 865 [2022-11-21 13:54:20,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 266 SyntacticMatches, 20 SemanticMatches, 88 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1765 ImplicationChecksByTransitivity, 170.9s TimeCoverageRelationStatistics Valid=721, Invalid=6813, Unknown=130, NotChecked=346, Total=8010 [2022-11-21 13:54:20,181 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 801 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 7330 mSolverCounterSat, 741 mSolverCounterUnsat, 175 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 200.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 9153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 741 IncrementalHoareTripleChecker+Valid, 7330 IncrementalHoareTripleChecker+Invalid, 175 IncrementalHoareTripleChecker+Unknown, 907 IncrementalHoareTripleChecker+Unchecked, 201.9s IncrementalHoareTripleChecker+Time [2022-11-21 13:54:20,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 1094 Invalid, 9153 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [741 Valid, 7330 Invalid, 175 Unknown, 907 Unchecked, 201.9s Time] [2022-11-21 13:54:20,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2022-11-21 13:54:20,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 858. [2022-11-21 13:54:20,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 543 states have (on average 1.14548802946593) internal successors, (622), 550 states have internal predecessors, (622), 205 states have call successors, (205), 97 states have call predecessors, (205), 109 states have return successors, (237), 210 states have call predecessors, (237), 203 states have call successors, (237) [2022-11-21 13:54:20,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1064 transitions. [2022-11-21 13:54:20,281 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1064 transitions. Word has length 238 [2022-11-21 13:54:20,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:54:20,281 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 1064 transitions. [2022-11-21 13:54:20,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 34 states have internal predecessors, (132), 18 states have call successors, (39), 10 states have call predecessors, (39), 14 states have return successors, (37), 17 states have call predecessors, (37), 18 states have call successors, (37) [2022-11-21 13:54:20,282 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1064 transitions. [2022-11-21 13:54:20,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-21 13:54:20,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:54:20,286 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:20,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-21 13:54:20,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-21 13:54:20,499 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:54:20,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:20,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2081198569, now seen corresponding path program 1 times [2022-11-21 13:54:20,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:20,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146175819] [2022-11-21 13:54:20,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:20,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:54:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 13:54:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:54:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 13:54:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 13:54:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:54:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:54:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:54:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 13:54:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 13:54:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:54:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 13:54:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:54:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:54:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 13:54:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-21 13:54:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-21 13:54:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 13:54:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-21 13:54:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-21 13:54:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:54:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:54:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:54:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 13:54:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:54:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-21 13:54:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-21 13:54:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-11-21 13:54:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-11-21 13:54:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-11-21 13:54:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-11-21 13:54:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-11-21 13:54:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-11-21 13:54:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:54:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 13:54:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-21 13:54:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-11-21 13:54:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:21,719 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2022-11-21 13:54:21,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:54:21,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146175819] [2022-11-21 13:54:21,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146175819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:54:21,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:54:21,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 13:54:21,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966268988] [2022-11-21 13:54:21,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:54:21,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 13:54:21,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:54:21,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 13:54:21,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:54:21,722 INFO L87 Difference]: Start difference. First operand 858 states and 1064 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 6 states have internal predecessors, (93), 2 states have call successors, (36), 6 states have call predecessors, (36), 4 states have return successors, (36), 4 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-21 13:54:23,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:54:23,416 INFO L93 Difference]: Finished difference Result 1445 states and 1777 transitions. [2022-11-21 13:54:23,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 13:54:23,417 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 6 states have internal predecessors, (93), 2 states have call successors, (36), 6 states have call predecessors, (36), 4 states have return successors, (36), 4 states have call predecessors, (36), 2 states have call successors, (36) Word has length 237 [2022-11-21 13:54:23,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:54:23,425 INFO L225 Difference]: With dead ends: 1445 [2022-11-21 13:54:23,425 INFO L226 Difference]: Without dead ends: 630 [2022-11-21 13:54:23,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-11-21 13:54:23,429 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 490 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:54:23,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 699 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 13:54:23,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2022-11-21 13:54:23,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 612. [2022-11-21 13:54:23,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 390 states have (on average 1.1333333333333333) internal successors, (442), 396 states have internal predecessors, (442), 140 states have call successors, (140), 72 states have call predecessors, (140), 81 states have return successors, (153), 143 states have call predecessors, (153), 138 states have call successors, (153) [2022-11-21 13:54:23,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 735 transitions. [2022-11-21 13:54:23,562 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 735 transitions. Word has length 237 [2022-11-21 13:54:23,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:54:23,563 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 735 transitions. [2022-11-21 13:54:23,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 6 states have internal predecessors, (93), 2 states have call successors, (36), 6 states have call predecessors, (36), 4 states have return successors, (36), 4 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-21 13:54:23,563 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 735 transitions. [2022-11-21 13:54:23,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-11-21 13:54:23,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:54:23,566 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:23,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 13:54:23,567 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:54:23,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:23,567 INFO L85 PathProgramCache]: Analyzing trace with hash 2103047603, now seen corresponding path program 2 times [2022-11-21 13:54:23,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:23,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75619746] [2022-11-21 13:54:23,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:23,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:23,674 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:54:23,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [694441863] [2022-11-21 13:54:23,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:54:23,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:54:23,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:54:23,679 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:54:23,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-21 13:54:24,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 13:54:24,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:54:24,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 3138 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 13:54:24,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:54:24,784 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-21 13:54:24,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:54:24,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:54:24,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75619746] [2022-11-21 13:54:24,786 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:54:24,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694441863] [2022-11-21 13:54:24,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694441863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:54:24,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:54:24,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:54:24,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930017698] [2022-11-21 13:54:24,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:54:24,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:54:24,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:54:24,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:54:24,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:54:24,790 INFO L87 Difference]: Start difference. First operand 612 states and 735 transitions. Second operand has 6 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-21 13:54:25,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:54:25,049 INFO L93 Difference]: Finished difference Result 822 states and 987 transitions. [2022-11-21 13:54:25,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 13:54:25,050 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 260 [2022-11-21 13:54:25,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:54:25,055 INFO L225 Difference]: With dead ends: 822 [2022-11-21 13:54:25,056 INFO L226 Difference]: Without dead ends: 590 [2022-11-21 13:54:25,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:54:25,059 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 2 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:54:25,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1409 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:54:25,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-11-21 13:54:25,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 588. [2022-11-21 13:54:25,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 376 states have (on average 1.127659574468085) internal successors, (424), 380 states have internal predecessors, (424), 133 states have call successors, (133), 72 states have call predecessors, (133), 78 states have return successors, (143), 135 states have call predecessors, (143), 131 states have call successors, (143) [2022-11-21 13:54:25,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 700 transitions. [2022-11-21 13:54:25,181 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 700 transitions. Word has length 260 [2022-11-21 13:54:25,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:54:25,181 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 700 transitions. [2022-11-21 13:54:25,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-21 13:54:25,182 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 700 transitions. [2022-11-21 13:54:25,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-11-21 13:54:25,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:54:25,185 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:54:25,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-21 13:54:25,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-21 13:54:25,399 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:54:25,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:54:25,399 INFO L85 PathProgramCache]: Analyzing trace with hash 972721738, now seen corresponding path program 1 times [2022-11-21 13:54:25,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:54:25,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008345169] [2022-11-21 13:54:25,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:25,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:54:25,505 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:54:25,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [100120959] [2022-11-21 13:54:25,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:54:25,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:54:25,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:54:25,507 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:54:25,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-21 13:54:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:54:26,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 3123 conjuncts, 262 conjunts are in the unsatisfiable core [2022-11-21 13:54:26,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:54:26,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 13:54:27,192 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-21 13:54:27,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-21 13:54:27,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 13:54:27,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-21 13:54:27,526 INFO L321 Elim1Store]: treesize reduction 57, result has 27.8 percent of original size [2022-11-21 13:54:27,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 49 [2022-11-21 13:54:27,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 13:54:27,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:54:27,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-21 13:54:27,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 13:54:27,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 13:54:27,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-21 13:54:28,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:54:28,506 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 13:54:28,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2022-11-21 13:54:28,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:54:28,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-21 13:54:28,565 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-21 13:54:28,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-21 13:54:29,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2022-11-21 13:54:29,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 13:54:29,870 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-21 13:54:29,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 34 treesize of output 53 [2022-11-21 13:54:30,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-21 13:54:30,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-21 13:54:30,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-21 13:54:30,361 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4139 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4139))) (exists ((v_ArrVal_4138 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4138) |c_#memory_$Pointer$.offset|)) (exists ((|v_hash_table_state_required_bytes_~#elemsize~0.base_36| Int) (v_ArrVal_4109 Int) (v_ArrVal_4107 Int) (|v___CPROVER_overflow_mult_~#c~1.base_137| Int)) (let ((.cse0 (store |c_old(#valid)| |v_hash_table_state_required_bytes_~#elemsize~0.base_36| v_ArrVal_4107))) (and (= (select .cse0 |v___CPROVER_overflow_mult_~#c~1.base_137|) 0) (= |c_#valid| (store (store .cse0 |v___CPROVER_overflow_mult_~#c~1.base_137| 0) |v_hash_table_state_required_bytes_~#elemsize~0.base_36| v_ArrVal_4109)) (= (select |c_old(#valid)| |v_hash_table_state_required_bytes_~#elemsize~0.base_36|) 0))))) is different from true [2022-11-21 13:54:30,751 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4141 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4141))) (exists ((v_ArrVal_4142 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4142) |c_#memory_$Pointer$.offset|)) (exists ((|v_hash_table_state_required_bytes_~#elemsize~0.base_36| Int) (v_ArrVal_4109 Int) (v_ArrVal_4107 Int) (|v___CPROVER_overflow_mult_~#c~1.base_137| Int)) (let ((.cse0 (store |c_old(#valid)| |v_hash_table_state_required_bytes_~#elemsize~0.base_36| v_ArrVal_4107))) (and (= (select .cse0 |v___CPROVER_overflow_mult_~#c~1.base_137|) 0) (= |c_#valid| (store (store .cse0 |v___CPROVER_overflow_mult_~#c~1.base_137| 0) |v_hash_table_state_required_bytes_~#elemsize~0.base_36| v_ArrVal_4109)) (= (select |c_old(#valid)| |v_hash_table_state_required_bytes_~#elemsize~0.base_36|) 0))))) is different from true [2022-11-21 13:54:32,339 INFO L321 Elim1Store]: treesize reduction 700, result has 15.6 percent of original size [2022-11-21 13:54:32,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 6 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 42 case distinctions, treesize of input 216949 treesize of output 215887 [2022-11-21 13:54:49,124 WARN L233 SmtUtils]: Spent 16.78s on a formula simplification. DAG size of input: 1277 DAG size of output: 1202 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-21 13:54:56,640 WARN L233 SmtUtils]: Spent 6.68s on a formula simplification. DAG size of input: 1163 DAG size of output: 885 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-21 13:54:56,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2022-11-21 13:54:59,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2022-11-21 13:55:09,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2022-11-21 13:55:10,256 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-21 13:55:10,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 45 [2022-11-21 13:55:16,940 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-21 13:55:16,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-11-21 13:55:17,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 29 [2022-11-21 13:55:17,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 13:55:17,589 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 13:55:17,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 47 [2022-11-21 13:55:17,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 13:55:17,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-21 13:55:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 148 proven. 254 refuted. 0 times theorem prover too weak. 91 trivial. 3 not checked. [2022-11-21 13:55:18,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:55:19,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:19,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008345169] [2022-11-21 13:55:19,638 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:55:19,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100120959] [2022-11-21 13:55:19,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100120959] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:55:19,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:55:19,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2022-11-21 13:55:19,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357703603] [2022-11-21 13:55:19,639 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-21 13:55:19,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-21 13:55:19,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:19,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-21 13:55:19,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=3028, Unknown=41, NotChecked=226, Total=3540 [2022-11-21 13:55:19,642 INFO L87 Difference]: Start difference. First operand 588 states and 700 transitions. Second operand has 53 states, 45 states have (on average 3.0) internal successors, (135), 45 states have internal predecessors, (135), 24 states have call successors, (41), 13 states have call predecessors, (41), 17 states have return successors, (39), 23 states have call predecessors, (39), 23 states have call successors, (39) [2022-11-21 13:55:22,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:55:25,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:55:27,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:55:30,758 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4139 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4139))) (exists ((v_ArrVal_4138 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4138) |c_#memory_$Pointer$.offset|)) (exists ((|v_ULTIMATE.start_ensure_allocated_hash_table_~map#1.base_BEFORE_CALL_22| Int)) (and (= (select |c_#valid| |v_ULTIMATE.start_ensure_allocated_hash_table_~map#1.base_BEFORE_CALL_22|) 1) (< |c_#StackHeapBarrier| |v_ULTIMATE.start_ensure_allocated_hash_table_~map#1.base_BEFORE_CALL_22|))) (exists ((|v___CPROVER_overflow_mult_~#c~1.base_137| Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_137|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_137| 0)))) (exists ((|v_hash_table_state_required_bytes_~#elemsize~0.base_36| Int) (v_ArrVal_4109 Int) (v_ArrVal_4107 Int) (|v___CPROVER_overflow_mult_~#c~1.base_137| Int)) (let ((.cse0 (store |c_old(#valid)| |v_hash_table_state_required_bytes_~#elemsize~0.base_36| v_ArrVal_4107))) (and (= (select .cse0 |v___CPROVER_overflow_mult_~#c~1.base_137|) 0) (= |c_#valid| (store (store .cse0 |v___CPROVER_overflow_mult_~#c~1.base_137| 0) |v_hash_table_state_required_bytes_~#elemsize~0.base_36| v_ArrVal_4109)) (= (select |c_old(#valid)| |v_hash_table_state_required_bytes_~#elemsize~0.base_36|) 0))))) is different from true [2022-11-21 13:55:30,832 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4139 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4139))) (exists ((v_ArrVal_4138 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4138) |c_#memory_$Pointer$.offset|)) (exists ((|v___CPROVER_overflow_mult_~#c~1.base_137| Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_137|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_137| 0)))) (exists ((|v_hash_table_state_required_bytes_~#elemsize~0.base_36| Int) (v_ArrVal_4109 Int) (v_ArrVal_4107 Int) (|v___CPROVER_overflow_mult_~#c~1.base_137| Int)) (let ((.cse0 (store |c_old(#valid)| |v_hash_table_state_required_bytes_~#elemsize~0.base_36| v_ArrVal_4107))) (and (= (select .cse0 |v___CPROVER_overflow_mult_~#c~1.base_137|) 0) (= |c_#valid| (store (store .cse0 |v___CPROVER_overflow_mult_~#c~1.base_137| 0) |v_hash_table_state_required_bytes_~#elemsize~0.base_36| v_ArrVal_4109)) (= (select |c_old(#valid)| |v_hash_table_state_required_bytes_~#elemsize~0.base_36|) 0))))) is different from true [2022-11-21 13:55:41,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:55:58,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:56:06,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:56:13,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:56:15,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:56:25,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:56:46,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:56:54,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:54,163 INFO L93 Difference]: Finished difference Result 985 states and 1162 transitions. [2022-11-21 13:56:54,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-11-21 13:56:54,164 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 45 states have (on average 3.0) internal successors, (135), 45 states have internal predecessors, (135), 24 states have call successors, (41), 13 states have call predecessors, (41), 17 states have return successors, (39), 23 states have call predecessors, (39), 23 states have call successors, (39) Word has length 258 [2022-11-21 13:56:54,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:54,169 INFO L225 Difference]: With dead ends: 985 [2022-11-21 13:56:54,169 INFO L226 Difference]: Without dead ends: 897 [2022-11-21 13:56:54,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 189 SyntacticMatches, 35 SemanticMatches, 131 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 5479 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=1341, Invalid=15060, Unknown=127, NotChecked=1028, Total=17556 [2022-11-21 13:56:54,174 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 1216 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 13925 mSolverCounterSat, 969 mSolverCounterUnsat, 263 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 16402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 969 IncrementalHoareTripleChecker+Valid, 13925 IncrementalHoareTripleChecker+Invalid, 263 IncrementalHoareTripleChecker+Unknown, 1245 IncrementalHoareTripleChecker+Unchecked, 82.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:54,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 1699 Invalid, 16402 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [969 Valid, 13925 Invalid, 263 Unknown, 1245 Unchecked, 82.2s Time] [2022-11-21 13:56:54,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-11-21 13:56:54,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 795. [2022-11-21 13:56:54,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 513 states have (on average 1.128654970760234) internal successors, (579), 517 states have internal predecessors, (579), 173 states have call successors, (173), 101 states have call predecessors, (173), 108 states have return successors, (191), 176 states have call predecessors, (191), 171 states have call successors, (191) [2022-11-21 13:56:54,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 943 transitions. [2022-11-21 13:56:54,323 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 943 transitions. Word has length 258 [2022-11-21 13:56:54,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:54,324 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 943 transitions. [2022-11-21 13:56:54,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 45 states have (on average 3.0) internal successors, (135), 45 states have internal predecessors, (135), 24 states have call successors, (41), 13 states have call predecessors, (41), 17 states have return successors, (39), 23 states have call predecessors, (39), 23 states have call successors, (39) [2022-11-21 13:56:54,324 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 943 transitions. [2022-11-21 13:56:54,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-11-21 13:56:54,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:54,328 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:54,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-21 13:56:54,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:56:54,544 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:56:54,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:54,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1060955965, now seen corresponding path program 2 times [2022-11-21 13:56:54,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:54,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566946911] [2022-11-21 13:56:54,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:54,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:54,641 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:56:54,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622579080] [2022-11-21 13:56:54,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:56:54,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:56:54,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:56:54,643 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:56:54,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-21 13:56:56,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 13:56:56,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:56:56,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 3126 conjuncts, 244 conjunts are in the unsatisfiable core [2022-11-21 13:56:56,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:56,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 13:56:56,402 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-21 13:56:56,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-21 13:56:56,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 13:56:56,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-21 13:56:56,747 INFO L321 Elim1Store]: treesize reduction 57, result has 27.8 percent of original size [2022-11-21 13:56:56,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 49 [2022-11-21 13:56:56,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 13:56:56,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:56:56,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-21 13:56:57,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 13:56:57,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-21 13:56:57,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 13:56:57,665 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-21 13:56:57,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-21 13:56:57,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:56:57,689 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 13:56:57,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2022-11-21 13:56:57,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:56:57,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-21 13:56:58,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2022-11-21 13:56:58,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 13:56:58,662 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-21 13:56:58,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-21 13:56:58,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-21 13:56:58,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-21 13:56:58,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-21 13:56:58,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 13:56:59,093 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4455 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4455))) (exists ((v_ArrVal_4456 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4456))) (exists ((v_ArrVal_4424 Int) (v_ArrVal_4422 Int) (|v___CPROVER_overflow_mult_~#c~1.base_144| Int) (|v_hash_table_state_required_bytes_~#elemsize~0.base_39| Int)) (let ((.cse0 (store |c_old(#valid)| |v_hash_table_state_required_bytes_~#elemsize~0.base_39| v_ArrVal_4422))) (and (= |c_#valid| (store (store .cse0 |v___CPROVER_overflow_mult_~#c~1.base_144| 0) |v_hash_table_state_required_bytes_~#elemsize~0.base_39| v_ArrVal_4424)) (= (select .cse0 |v___CPROVER_overflow_mult_~#c~1.base_144|) 0) (= (select |c_old(#valid)| |v_hash_table_state_required_bytes_~#elemsize~0.base_39|) 0))))) is different from true [2022-11-21 13:56:59,290 INFO L321 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2022-11-21 13:56:59,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 68 [2022-11-21 13:56:59,475 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-21 13:56:59,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 37 [2022-11-21 13:57:00,710 INFO L321 Elim1Store]: treesize reduction 576, result has 16.3 percent of original size [2022-11-21 13:57:00,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 3304 treesize of output 3355 [2022-11-21 13:57:01,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2022-11-21 13:57:01,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-21 13:57:04,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2022-11-21 13:57:04,158 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-21 13:57:04,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 13:57:06,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 13:57:08,279 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_aws_hash_table_find_~map.base_BEFORE_CALL_24 Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| v_aws_hash_table_find_~map.base_BEFORE_CALL_24) 0))) (and (not (= .cse0 0)) (<= (+ 2 .cse0) v_aws_hash_table_find_~map.base_BEFORE_CALL_24)))) is different from true [2022-11-21 13:57:18,434 WARN L859 $PredicateComparison]: unable to prove that (exists ((|s_find_entry_~p_entry#1.base| Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |s_find_entry_~p_entry#1.base| (store (select |c_old(#memory_$Pointer$.base)| |s_find_entry_~p_entry#1.base|) |c_s_find_entry_#in~p_entry#1.offset| |c_s_find_entry_#in~state#1.base|)))) is different from true [2022-11-21 13:57:18,455 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-21 13:57:18,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 24 [2022-11-21 13:57:18,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-21 13:57:20,708 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_aws_hash_table_find_~map.base_BEFORE_CALL_26 Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| v_aws_hash_table_find_~map.base_BEFORE_CALL_26) 0))) (and (<= (+ 2 .cse0) v_aws_hash_table_find_~map.base_BEFORE_CALL_26) (not (= .cse0 0))))) is different from true [2022-11-21 13:57:29,277 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 98 proven. 254 refuted. 0 times theorem prover too weak. 79 trivial. 69 not checked. [2022-11-21 13:57:29,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:57:36,113 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4462 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| c_aws_hash_table_find_~p_elem.base v_ArrVal_4462) c_aws_hash_table_find_~map.base) c_aws_hash_table_find_~map.offset) 0))) is different from false [2022-11-21 13:57:36,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:57:36,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566946911] [2022-11-21 13:57:36,395 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:57:36,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622579080] [2022-11-21 13:57:36,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622579080] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:57:36,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:57:36,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2022-11-21 13:57:36,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101673450] [2022-11-21 13:57:36,396 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-21 13:57:36,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-21 13:57:36,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:57:36,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-21 13:57:36,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2636, Unknown=40, NotChecked=540, Total=3422 [2022-11-21 13:57:36,399 INFO L87 Difference]: Start difference. First operand 795 states and 943 transitions. Second operand has 52 states, 44 states have (on average 3.2045454545454546) internal successors, (141), 46 states have internal predecessors, (141), 25 states have call successors, (42), 13 states have call predecessors, (42), 17 states have return successors, (40), 22 states have call predecessors, (40), 24 states have call successors, (40) [2022-11-21 13:57:39,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:57:41,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:57:44,722 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_ensure_allocated_hash_table_~map#1.base_BEFORE_CALL_29| Int)) (and (= (select |c_#valid| |v_ULTIMATE.start_ensure_allocated_hash_table_~map#1.base_BEFORE_CALL_29|) 1) (< |c_#StackHeapBarrier| |v_ULTIMATE.start_ensure_allocated_hash_table_~map#1.base_BEFORE_CALL_29|))) (exists ((v_ArrVal_4455 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4455))) (exists ((|v___CPROVER_overflow_mult_~#c~1.base_144| Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_144|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_144| 0)))) (exists ((v_ArrVal_4456 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4456))) (exists ((v_ArrVal_4424 Int) (v_ArrVal_4422 Int) (|v___CPROVER_overflow_mult_~#c~1.base_144| Int) (|v_hash_table_state_required_bytes_~#elemsize~0.base_39| Int)) (let ((.cse0 (store |c_old(#valid)| |v_hash_table_state_required_bytes_~#elemsize~0.base_39| v_ArrVal_4422))) (and (= |c_#valid| (store (store .cse0 |v___CPROVER_overflow_mult_~#c~1.base_144| 0) |v_hash_table_state_required_bytes_~#elemsize~0.base_39| v_ArrVal_4424)) (= (select .cse0 |v___CPROVER_overflow_mult_~#c~1.base_144|) 0) (= (select |c_old(#valid)| |v_hash_table_state_required_bytes_~#elemsize~0.base_39|) 0))))) is different from true [2022-11-21 13:57:57,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:58:04,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:58:07,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:58:15,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:58:37,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:58:39,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:58:42,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:58:55,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:55,565 INFO L93 Difference]: Finished difference Result 1243 states and 1493 transitions. [2022-11-21 13:58:55,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-21 13:58:55,566 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 44 states have (on average 3.2045454545454546) internal successors, (141), 46 states have internal predecessors, (141), 25 states have call successors, (42), 13 states have call predecessors, (42), 17 states have return successors, (40), 22 states have call predecessors, (40), 24 states have call successors, (40) Word has length 264 [2022-11-21 13:58:55,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:55,571 INFO L225 Difference]: With dead ends: 1243 [2022-11-21 13:58:55,572 INFO L226 Difference]: Without dead ends: 1155 [2022-11-21 13:58:55,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 192 SyntacticMatches, 39 SemanticMatches, 118 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 4050 ImplicationChecksByTransitivity, 59.3s TimeCoverageRelationStatistics Valid=1092, Invalid=11711, Unknown=103, NotChecked=1374, Total=14280 [2022-11-21 13:58:55,577 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 1163 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 12636 mSolverCounterSat, 911 mSolverCounterUnsat, 133 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 15942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 911 IncrementalHoareTripleChecker+Valid, 12636 IncrementalHoareTripleChecker+Invalid, 133 IncrementalHoareTripleChecker+Unknown, 2262 IncrementalHoareTripleChecker+Unchecked, 52.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:58:55,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 1831 Invalid, 15942 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [911 Valid, 12636 Invalid, 133 Unknown, 2262 Unchecked, 52.4s Time] [2022-11-21 13:58:55,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-11-21 13:58:55,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 964. [2022-11-21 13:58:55,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 621 states have (on average 1.1320450885668276) internal successors, (703), 625 states have internal predecessors, (703), 214 states have call successors, (214), 121 states have call predecessors, (214), 128 states have return successors, (240), 217 states have call predecessors, (240), 212 states have call successors, (240) [2022-11-21 13:58:55,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1157 transitions. [2022-11-21 13:58:55,752 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1157 transitions. Word has length 264 [2022-11-21 13:58:55,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:55,753 INFO L495 AbstractCegarLoop]: Abstraction has 964 states and 1157 transitions. [2022-11-21 13:58:55,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 44 states have (on average 3.2045454545454546) internal successors, (141), 46 states have internal predecessors, (141), 25 states have call successors, (42), 13 states have call predecessors, (42), 17 states have return successors, (40), 22 states have call predecessors, (40), 24 states have call successors, (40) [2022-11-21 13:58:55,753 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1157 transitions. [2022-11-21 13:58:55,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-11-21 13:58:55,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:55,757 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:58:55,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-21 13:58:55,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:58:55,974 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:58:55,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:55,975 INFO L85 PathProgramCache]: Analyzing trace with hash 540210082, now seen corresponding path program 1 times [2022-11-21 13:58:55,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:58:55,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250991839] [2022-11-21 13:58:55,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:55,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:58:56,070 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:58:56,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1169186415] [2022-11-21 13:58:56,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:56,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:58:56,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:58:56,072 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:58:56,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-21 13:58:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:57,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 3127 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 13:58:57,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:58:57,110 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-11-21 13:58:57,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:58:57,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:58:57,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250991839] [2022-11-21 13:58:57,111 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:58:57,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169186415] [2022-11-21 13:58:57,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169186415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:57,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:57,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:58:57,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948638612] [2022-11-21 13:58:57,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:57,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:58:57,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:58:57,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:58:57,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:58:57,113 INFO L87 Difference]: Start difference. First operand 964 states and 1157 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 6 states have internal predecessors, (106), 2 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (37), 4 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-21 13:58:57,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:57,281 INFO L93 Difference]: Finished difference Result 1728 states and 2065 transitions. [2022-11-21 13:58:57,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:58:57,282 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 6 states have internal predecessors, (106), 2 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (37), 4 states have call predecessors, (37), 2 states have call successors, (37) Word has length 264 [2022-11-21 13:58:57,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:57,285 INFO L225 Difference]: With dead ends: 1728 [2022-11-21 13:58:57,285 INFO L226 Difference]: Without dead ends: 817 [2022-11-21 13:58:57,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:58:57,288 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 2 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:58:57,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1850 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:58:57,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-11-21 13:58:57,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 804. [2022-11-21 13:58:57,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 521 states have (on average 1.1247600767754318) internal successors, (586), 524 states have internal predecessors, (586), 173 states have call successors, (173), 102 states have call predecessors, (173), 109 states have return successors, (192), 177 states have call predecessors, (192), 171 states have call successors, (192) [2022-11-21 13:58:57,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 951 transitions. [2022-11-21 13:58:57,496 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 951 transitions. Word has length 264 [2022-11-21 13:58:57,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:57,496 INFO L495 AbstractCegarLoop]: Abstraction has 804 states and 951 transitions. [2022-11-21 13:58:57,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 6 states have internal predecessors, (106), 2 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (37), 4 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-21 13:58:57,497 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 951 transitions. [2022-11-21 13:58:57,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-11-21 13:58:57,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:57,500 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:58:57,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-21 13:58:57,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-21 13:58:57,706 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:58:57,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:57,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1328100852, now seen corresponding path program 1 times [2022-11-21 13:58:57,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:58:57,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170711545] [2022-11-21 13:58:57,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:57,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:58:57,791 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:58:57,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1494306051] [2022-11-21 13:58:57,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:57,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:58:57,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:58:57,793 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:58:57,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-21 13:58:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:58,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 3136 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 13:58:58,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:58:58,803 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-11-21 13:58:58,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:58:58,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:58:58,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170711545] [2022-11-21 13:58:58,804 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:58:58,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494306051] [2022-11-21 13:58:58,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494306051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:58,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:58,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 13:58:58,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223807377] [2022-11-21 13:58:58,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:58,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:58:58,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:58:58,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:58:58,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:58:58,808 INFO L87 Difference]: Start difference. First operand 804 states and 951 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-21 13:58:58,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:58,989 INFO L93 Difference]: Finished difference Result 919 states and 1088 transitions. [2022-11-21 13:58:58,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:58:58,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 258 [2022-11-21 13:58:58,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:58,994 INFO L225 Difference]: With dead ends: 919 [2022-11-21 13:58:58,994 INFO L226 Difference]: Without dead ends: 798 [2022-11-21 13:58:58,995 INFO L412 NwaCegarLoop]: 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 [2022-11-21 13:58:58,996 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 30 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:58:58,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 885 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:58:58,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-11-21 13:58:59,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 798. [2022-11-21 13:58:59,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 516 states have (on average 1.122093023255814) internal successors, (579), 519 states have internal predecessors, (579), 173 states have call successors, (173), 102 states have call predecessors, (173), 108 states have return successors, (189), 176 states have call predecessors, (189), 171 states have call successors, (189) [2022-11-21 13:58:59,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 941 transitions. [2022-11-21 13:58:59,168 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 941 transitions. Word has length 258 [2022-11-21 13:58:59,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:59,169 INFO L495 AbstractCegarLoop]: Abstraction has 798 states and 941 transitions. [2022-11-21 13:58:59,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-21 13:58:59,169 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 941 transitions. [2022-11-21 13:58:59,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-21 13:58:59,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:59,172 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:58:59,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-21 13:58:59,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:58:59,378 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:58:59,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:59,378 INFO L85 PathProgramCache]: Analyzing trace with hash -583654419, now seen corresponding path program 1 times [2022-11-21 13:58:59,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:58:59,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605064925] [2022-11-21 13:58:59,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:59,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:58:59,468 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:58:59,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753816028] [2022-11-21 13:58:59,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:59,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:58:59,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:58:59,469 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:58:59,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-21 13:59:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:00,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 3131 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 13:59:00,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:00,405 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 479 trivial. 0 not checked. [2022-11-21 13:59:00,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:59:00,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:00,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605064925] [2022-11-21 13:59:00,406 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:00,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753816028] [2022-11-21 13:59:00,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753816028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:59:00,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:59:00,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:59:00,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319851411] [2022-11-21 13:59:00,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:59:00,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:59:00,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:00,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:59:00,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:59:00,408 INFO L87 Difference]: Start difference. First operand 798 states and 941 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-21 13:59:00,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:00,544 INFO L93 Difference]: Finished difference Result 945 states and 1114 transitions. [2022-11-21 13:59:00,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:59:00,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 266 [2022-11-21 13:59:00,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:00,549 INFO L225 Difference]: With dead ends: 945 [2022-11-21 13:59:00,549 INFO L226 Difference]: Without dead ends: 801 [2022-11-21 13:59:00,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:59:00,551 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 0 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:00,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 611 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:59:00,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-11-21 13:59:00,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 801. [2022-11-21 13:59:00,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 519 states have (on average 1.1213872832369942) internal successors, (582), 522 states have internal predecessors, (582), 173 states have call successors, (173), 102 states have call predecessors, (173), 108 states have return successors, (189), 176 states have call predecessors, (189), 171 states have call successors, (189) [2022-11-21 13:59:00,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 944 transitions. [2022-11-21 13:59:00,752 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 944 transitions. Word has length 266 [2022-11-21 13:59:00,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:00,754 INFO L495 AbstractCegarLoop]: Abstraction has 801 states and 944 transitions. [2022-11-21 13:59:00,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-21 13:59:00,754 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 944 transitions. [2022-11-21 13:59:00,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-11-21 13:59:00,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:00,757 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:00,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-11-21 13:59:00,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:00,970 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:00,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:00,971 INFO L85 PathProgramCache]: Analyzing trace with hash 423844943, now seen corresponding path program 1 times [2022-11-21 13:59:00,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:00,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479386487] [2022-11-21 13:59:00,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:00,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:01,085 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:01,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [539769173] [2022-11-21 13:59:01,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:01,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:01,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:01,086 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:01,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-21 13:59:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:02,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 3189 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-21 13:59:02,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:02,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-21 13:59:02,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-21 13:59:02,237 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-21 13:59:02,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2022-11-21 13:59:02,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:02,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479386487] [2022-11-21 13:59:02,697 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:02,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539769173] [2022-11-21 13:59:02,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539769173] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:59:02,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:59:02,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 15 [2022-11-21 13:59:02,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365382667] [2022-11-21 13:59:02,698 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:59:02,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 13:59:02,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:02,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 13:59:02,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:59:02,700 INFO L87 Difference]: Start difference. First operand 801 states and 944 transitions. Second operand has 15 states, 12 states have (on average 8.5) internal successors, (102), 13 states have internal predecessors, (102), 9 states have call successors, (43), 4 states have call predecessors, (43), 5 states have return successors, (37), 5 states have call predecessors, (37), 7 states have call successors, (37) [2022-11-21 13:59:03,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:03,210 INFO L93 Difference]: Finished difference Result 1256 states and 1535 transitions. [2022-11-21 13:59:03,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 13:59:03,211 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 8.5) internal successors, (102), 13 states have internal predecessors, (102), 9 states have call successors, (43), 4 states have call predecessors, (43), 5 states have return successors, (37), 5 states have call predecessors, (37), 7 states have call successors, (37) Word has length 265 [2022-11-21 13:59:03,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:03,216 INFO L225 Difference]: With dead ends: 1256 [2022-11-21 13:59:03,216 INFO L226 Difference]: Without dead ends: 871 [2022-11-21 13:59:03,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-11-21 13:59:03,219 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 104 mSDsluCounter, 2921 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 3230 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:03,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 3230 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:59:03,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-11-21 13:59:03,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 857. [2022-11-21 13:59:03,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 546 states have (on average 1.1153846153846154) internal successors, (609), 549 states have internal predecessors, (609), 197 states have call successors, (197), 107 states have call predecessors, (197), 113 states have return successors, (217), 200 states have call predecessors, (217), 195 states have call successors, (217) [2022-11-21 13:59:03,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1023 transitions. [2022-11-21 13:59:03,436 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1023 transitions. Word has length 265 [2022-11-21 13:59:03,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:03,437 INFO L495 AbstractCegarLoop]: Abstraction has 857 states and 1023 transitions. [2022-11-21 13:59:03,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 8.5) internal successors, (102), 13 states have internal predecessors, (102), 9 states have call successors, (43), 4 states have call predecessors, (43), 5 states have return successors, (37), 5 states have call predecessors, (37), 7 states have call successors, (37) [2022-11-21 13:59:03,437 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1023 transitions. [2022-11-21 13:59:03,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-11-21 13:59:03,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:03,440 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 6, 6, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:03,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:03,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-21 13:59:03,654 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:03,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:03,655 INFO L85 PathProgramCache]: Analyzing trace with hash 392580137, now seen corresponding path program 1 times [2022-11-21 13:59:03,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:03,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522293151] [2022-11-21 13:59:03,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:03,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:03,745 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:03,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1974967161] [2022-11-21 13:59:03,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:03,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:03,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:03,747 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:03,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-21 13:59:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:04,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 3222 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 13:59:04,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:04,785 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2022-11-21 13:59:04,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:59:04,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:04,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522293151] [2022-11-21 13:59:04,785 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:04,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974967161] [2022-11-21 13:59:04,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974967161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:59:04,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:59:04,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:59:04,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548735950] [2022-11-21 13:59:04,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:59:04,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:59:04,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:04,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:59:04,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:59:04,787 INFO L87 Difference]: Start difference. First operand 857 states and 1023 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-21 13:59:05,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:05,109 INFO L93 Difference]: Finished difference Result 1674 states and 2001 transitions. [2022-11-21 13:59:05,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 13:59:05,111 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 276 [2022-11-21 13:59:05,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:05,114 INFO L225 Difference]: With dead ends: 1674 [2022-11-21 13:59:05,114 INFO L226 Difference]: Without dead ends: 844 [2022-11-21 13:59:05,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:59:05,117 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 2 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:05,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1389 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:59:05,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2022-11-21 13:59:05,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 844. [2022-11-21 13:59:05,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 537 states have (on average 1.1154562383612663) internal successors, (599), 539 states have internal predecessors, (599), 196 states have call successors, (196), 106 states have call predecessors, (196), 110 states have return successors, (213), 198 states have call predecessors, (213), 194 states have call successors, (213) [2022-11-21 13:59:05,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1008 transitions. [2022-11-21 13:59:05,330 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1008 transitions. Word has length 276 [2022-11-21 13:59:05,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:05,331 INFO L495 AbstractCegarLoop]: Abstraction has 844 states and 1008 transitions. [2022-11-21 13:59:05,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-21 13:59:05,331 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1008 transitions. [2022-11-21 13:59:05,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-11-21 13:59:05,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:05,335 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 6, 6, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:05,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:05,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-21 13:59:05,547 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:05,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:05,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1058599782, now seen corresponding path program 1 times [2022-11-21 13:59:05,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:05,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031560539] [2022-11-21 13:59:05,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:05,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:05,619 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:05,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579394292] [2022-11-21 13:59:05,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:05,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:05,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:05,621 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:05,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-21 13:59:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:06,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 3327 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 13:59:06,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:06,763 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2022-11-21 13:59:06,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:59:06,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:06,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031560539] [2022-11-21 13:59:06,763 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:06,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579394292] [2022-11-21 13:59:06,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579394292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:59:06,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:59:06,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:59:06,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730029075] [2022-11-21 13:59:06,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:59:06,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:59:06,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:06,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:59:06,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:59:06,766 INFO L87 Difference]: Start difference. First operand 844 states and 1008 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-21 13:59:07,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:07,051 INFO L93 Difference]: Finished difference Result 1358 states and 1630 transitions. [2022-11-21 13:59:07,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 13:59:07,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 282 [2022-11-21 13:59:07,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:07,056 INFO L225 Difference]: With dead ends: 1358 [2022-11-21 13:59:07,056 INFO L226 Difference]: Without dead ends: 634 [2022-11-21 13:59:07,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:59:07,058 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 2 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:07,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1394 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:59:07,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-11-21 13:59:07,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 623. [2022-11-21 13:59:07,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 397 states have (on average 1.1108312342569269) internal successors, (441), 399 states have internal predecessors, (441), 143 states have call successors, (143), 80 states have call predecessors, (143), 82 states have return successors, (150), 143 states have call predecessors, (150), 141 states have call successors, (150) [2022-11-21 13:59:07,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 734 transitions. [2022-11-21 13:59:07,172 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 734 transitions. Word has length 282 [2022-11-21 13:59:07,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:07,173 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 734 transitions. [2022-11-21 13:59:07,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-21 13:59:07,173 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 734 transitions. [2022-11-21 13:59:07,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-11-21 13:59:07,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:07,176 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 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, 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] [2022-11-21 13:59:07,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:07,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:07,389 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:07,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:07,390 INFO L85 PathProgramCache]: Analyzing trace with hash 603275627, now seen corresponding path program 1 times [2022-11-21 13:59:07,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:07,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186310607] [2022-11-21 13:59:07,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:07,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:07,458 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:07,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727444634] [2022-11-21 13:59:07,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:07,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:07,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:07,460 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:07,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10821448-eb55-472b-8a57-5aa577c32687/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-21 13:59:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:09,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 3273 conjuncts, 269 conjunts are in the unsatisfiable core [2022-11-21 13:59:09,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:09,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 13:59:09,459 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-21 13:59:09,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-21 13:59:09,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 13:59:09,880 INFO L321 Elim1Store]: treesize reduction 130, result has 17.2 percent of original size [2022-11-21 13:59:09,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 69 treesize of output 77 [2022-11-21 13:59:10,127 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 13:59:10,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 13:59:10,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:59:10,218 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-21 13:59:10,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 26 [2022-11-21 13:59:10,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-21 13:59:10,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 13:59:10,880 INFO L321 Elim1Store]: treesize reduction 51, result has 8.9 percent of original size [2022-11-21 13:59:10,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 96 [2022-11-21 13:59:10,919 INFO L321 Elim1Store]: treesize reduction 63, result has 19.2 percent of original size [2022-11-21 13:59:10,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 103 treesize of output 118 [2022-11-21 13:59:10,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 59 [2022-11-21 13:59:10,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2022-11-21 13:59:10,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-21 13:59:11,096 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-21 13:59:11,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-21 13:59:12,305 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base|) |c_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.offset|))) (and (< .cse0 |c_#StackHeapBarrier|) (let ((.cse2 (select |c_#memory_$Pointer$.base| .cse0))) (or (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse1 (select (store (store |c_#memory_$Pointer$.base| .cse0 v_DerPreprocessor_3) |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| .cse2) .cse0))) (and (exists ((v_prenex_2 Int)) (= |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| (select .cse1 (+ 8 v_prenex_2)))) (= v_DerPreprocessor_3 .cse1)))) (and (exists ((v_DerPreprocessor_3 (Array Int Int))) (= v_DerPreprocessor_3 (select (store (store |c_#memory_$Pointer$.base| .cse0 v_DerPreprocessor_3) |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| .cse2) .cse0))) (= |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| .cse0)) (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse3 (select (store (store |c_#memory_$Pointer$.base| .cse0 v_DerPreprocessor_3) |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| .cse2) .cse0))) (and (exists ((v_arrayElimCell_186 Int)) (let ((.cse4 (+ v_arrayElimCell_186 8))) (and (= |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| (select .cse3 .cse4)) (not (= .cse4 |c_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.offset|))))) (= v_DerPreprocessor_3 .cse3)))))) (= (select |c_#valid| |c_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base|) 1) (not (= 0 .cse0)) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base|) (= |c_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.offset| 0) (or (exists ((|v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_13| Int)) (and (exists ((|v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130| Int)) (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130|) 0))) (and (= (select |c_#valid| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130|) 1) (not (= |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_13| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130|)) (< |c_#StackHeapBarrier| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130|) (< .cse5 |c_#StackHeapBarrier|) (not (= .cse5 0)) (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse6 (select (store (store |c_#memory_$Pointer$.base| .cse5 v_DerPreprocessor_3) |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| (select |c_#memory_$Pointer$.base| .cse5)) .cse5))) (and (= v_DerPreprocessor_3 .cse6) (exists ((v_prenex_2 Int)) (= (select .cse6 (+ 8 v_prenex_2)) |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base|)))))))) (< |c_#StackHeapBarrier| |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_13|) (= (select |c_#valid| |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_13|) 1))) (exists ((|v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_13| Int)) (and (exists ((|v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130| Int)) (let ((.cse7 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130|) 0))) (and (= (select |c_#valid| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130|) 1) (not (= |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_13| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130|)) (< |c_#StackHeapBarrier| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130|) (< .cse7 |c_#StackHeapBarrier|) (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse8 (select (store (store |c_#memory_$Pointer$.base| .cse7 v_DerPreprocessor_3) |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| (select |c_#memory_$Pointer$.base| .cse7)) .cse7))) (and (= v_DerPreprocessor_3 .cse8) (exists ((v_arrayElimCell_186 Int)) (let ((.cse9 (+ v_arrayElimCell_186 8))) (and (not (= .cse9 0)) (= |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| (select .cse8 .cse9)))))))) (not (= .cse7 0))))) (< |c_#StackHeapBarrier| |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_13|) (= (select |c_#valid| |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_13|) 1))) (exists ((|v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_13| Int)) (and (exists ((|v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130| Int)) (let ((.cse10 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130|) 0))) (and (= (select |c_#valid| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130|) 1) (= |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| .cse10) (not (= |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_13| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130|)) (< |c_#StackHeapBarrier| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130|) (exists ((v_DerPreprocessor_3 (Array Int Int))) (= v_DerPreprocessor_3 (select (store (store |c_#memory_$Pointer$.base| .cse10 v_DerPreprocessor_3) |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| (select |c_#memory_$Pointer$.base| .cse10)) .cse10))) (< .cse10 |c_#StackHeapBarrier|)))) (< |c_#StackHeapBarrier| |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_13|) (= (select |c_#valid| |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_13|) 1)))) (not (= |c_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base| |c_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base|)) (= (select |c_#valid| |c_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base|) 1) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base|))) is different from true [2022-11-21 13:59:14,747 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base|) |c_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.offset|))) (and (< .cse0 |c_#StackHeapBarrier|) (let ((.cse2 (select |c_#memory_$Pointer$.base| .cse0))) (or (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse1 (select (store (store |c_#memory_$Pointer$.base| .cse0 v_DerPreprocessor_3) |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| .cse2) .cse0))) (and (exists ((v_prenex_2 Int)) (= |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| (select .cse1 (+ 8 v_prenex_2)))) (= v_DerPreprocessor_3 .cse1)))) (and (exists ((v_DerPreprocessor_3 (Array Int Int))) (= v_DerPreprocessor_3 (select (store (store |c_#memory_$Pointer$.base| .cse0 v_DerPreprocessor_3) |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| .cse2) .cse0))) (= |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| .cse0)) (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse3 (select (store (store |c_#memory_$Pointer$.base| .cse0 v_DerPreprocessor_3) |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| .cse2) .cse0))) (and (exists ((v_arrayElimCell_186 Int)) (let ((.cse4 (+ v_arrayElimCell_186 8))) (and (= |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| (select .cse3 .cse4)) (not (= .cse4 |c_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.offset|))))) (= v_DerPreprocessor_3 .cse3)))))) (= (select |c_#valid| |c_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base|) 1) (not (= 0 .cse0)) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base|) (= |c_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.offset| 0) (or (exists ((|v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_14| Int)) (and (< |c_#StackHeapBarrier| |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_14|) (= (select |c_#valid| |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_14|) 1) (exists ((|v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_131| Int)) (let ((.cse7 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_131|) 0))) (and (< |c_#StackHeapBarrier| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_131|) (= (select |c_#valid| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_131|) 1) (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse5 (select (store (store |c_#memory_$Pointer$.base| .cse7 v_DerPreprocessor_3) |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| (select |c_#memory_$Pointer$.base| .cse7)) .cse7))) (and (exists ((v_arrayElimCell_186 Int)) (let ((.cse6 (+ v_arrayElimCell_186 8))) (and (= (select .cse5 .cse6) |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base|) (not (= .cse6 0))))) (= v_DerPreprocessor_3 .cse5)))) (not (= |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_14| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_131|)) (< .cse7 |c_#StackHeapBarrier|) (not (= .cse7 0))))))) (exists ((|v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_14| Int)) (and (< |c_#StackHeapBarrier| |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_14|) (= (select |c_#valid| |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_14|) 1) (exists ((|v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_131| Int)) (let ((.cse8 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_131|) 0))) (and (< |c_#StackHeapBarrier| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_131|) (= (select |c_#valid| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_131|) 1) (not (= |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_14| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_131|)) (exists ((v_DerPreprocessor_3 (Array Int Int))) (= v_DerPreprocessor_3 (select (store (store |c_#memory_$Pointer$.base| .cse8 v_DerPreprocessor_3) |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| (select |c_#memory_$Pointer$.base| .cse8)) .cse8))) (< .cse8 |c_#StackHeapBarrier|) (= |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| .cse8)))))) (exists ((|v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_14| Int)) (and (< |c_#StackHeapBarrier| |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_14|) (= (select |c_#valid| |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_14|) 1) (exists ((|v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_131| Int)) (let ((.cse9 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_131|) 0))) (and (< |c_#StackHeapBarrier| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_131|) (= (select |c_#valid| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_131|) 1) (not (= |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_14| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_131|)) (< .cse9 |c_#StackHeapBarrier|) (not (= .cse9 0)) (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse10 (select (store (store |c_#memory_$Pointer$.base| .cse9 v_DerPreprocessor_3) |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| (select |c_#memory_$Pointer$.base| .cse9)) .cse9))) (and (exists ((v_prenex_2 Int)) (= (select .cse10 (+ 8 v_prenex_2)) |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base|)) (= v_DerPreprocessor_3 .cse10)))))))))) (or (exists ((|v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_13| Int)) (and (exists ((|v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130| Int)) (let ((.cse11 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130|) 0))) (and (= (select |c_#valid| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130|) 1) (not (= |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_13| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130|)) (< |c_#StackHeapBarrier| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130|) (< .cse11 |c_#StackHeapBarrier|) (not (= .cse11 0)) (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse12 (select (store (store |c_#memory_$Pointer$.base| .cse11 v_DerPreprocessor_3) |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| (select |c_#memory_$Pointer$.base| .cse11)) .cse11))) (and (= v_DerPreprocessor_3 .cse12) (exists ((v_prenex_2 Int)) (= (select .cse12 (+ 8 v_prenex_2)) |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base|)))))))) (< |c_#StackHeapBarrier| |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_13|) (= (select |c_#valid| |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_13|) 1))) (exists ((|v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_13| Int)) (and (exists ((|v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130| Int)) (let ((.cse13 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130|) 0))) (and (= (select |c_#valid| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130|) 1) (not (= |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_13| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130|)) (< |c_#StackHeapBarrier| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130|) (< .cse13 |c_#StackHeapBarrier|) (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse14 (select (store (store |c_#memory_$Pointer$.base| .cse13 v_DerPreprocessor_3) |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| (select |c_#memory_$Pointer$.base| .cse13)) .cse13))) (and (= v_DerPreprocessor_3 .cse14) (exists ((v_arrayElimCell_186 Int)) (let ((.cse15 (+ v_arrayElimCell_186 8))) (and (not (= .cse15 0)) (= |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| (select .cse14 .cse15)))))))) (not (= .cse13 0))))) (< |c_#StackHeapBarrier| |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_13|) (= (select |c_#valid| |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_13|) 1))) (exists ((|v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_13| Int)) (and (exists ((|v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130| Int)) (let ((.cse16 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130|) 0))) (and (= (select |c_#valid| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130|) 1) (= |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| .cse16) (not (= |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_13| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130|)) (< |c_#StackHeapBarrier| |v_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base_BEFORE_CALL_130|) (exists ((v_DerPreprocessor_3 (Array Int Int))) (= v_DerPreprocessor_3 (select (store (store |c_#memory_$Pointer$.base| .cse16 v_DerPreprocessor_3) |#funAddr~uninterpreted_equals_assert_inputs_nonnull.base| (select |c_#memory_$Pointer$.base| .cse16)) .cse16))) (< .cse16 |c_#StackHeapBarrier|)))) (< |c_#StackHeapBarrier| |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_13|) (= (select |c_#valid| |v_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base_BEFORE_CALL_13|) 1)))) (not (= |c_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base| |c_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base|)) (= (select |c_#valid| |c_ULTIMATE.start_aws_hash_table_find_harness_~#map~0#1.base|) 1) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base|))) is different from true [2022-11-21 13:59:43,973 WARN L233 SmtUtils]: Spent 19.18s on a formula simplification. DAG size of input: 937 DAG size of output: 727 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-21 13:59:43,976 INFO L321 Elim1Store]: treesize reduction 490, result has 74.0 percent of original size [2022-11-21 13:59:43,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 1 disjoint index pairs (out of 190 index pairs), introduced 30 new quantified variables, introduced 209 case distinctions, treesize of input 997 treesize of output 2200 [2022-11-21 13:59:44,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-21 13:59:45,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-21 13:59:45,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-21 13:59:46,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-21 13:59:47,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-21 13:59:47,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-21 13:59:49,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3