./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8 --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 1baae56bade188786b6c048f5a5545dd6165460ea50e58a0310e4360c89d1838 --- 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-e04fb08 [2022-11-16 12:12:14,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:12:14,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:12:14,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:12:14,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:12:14,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:12:14,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:12:14,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:12:14,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:12:14,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:12:14,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:12:14,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:12:14,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:12:14,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:12:14,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:12:14,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:12:14,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:12:14,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:12:14,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:12:14,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:12:14,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:12:14,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:12:14,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:12:14,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:12:14,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:12:14,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:12:14,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:12:14,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:12:14,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:12:14,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:12:14,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:12:14,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:12:14,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:12:14,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:12:14,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:12:14,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:12:14,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:12:14,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:12:14,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:12:14,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:12:14,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:12:14,988 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 12:12:15,039 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:12:15,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:12:15,040 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:12:15,040 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:12:15,041 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:12:15,041 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:12:15,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:12:15,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:12:15,048 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:12:15,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:12:15,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:12:15,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:12:15,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:12:15,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:12:15,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:12:15,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:12:15,051 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:12:15,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:12:15,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:12:15,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:12:15,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:12:15,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:12:15,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:12:15,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:12:15,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:12:15,054 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:12:15,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:12:15,056 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:12:15,056 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:12:15,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:12:15,057 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_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1baae56bade188786b6c048f5a5545dd6165460ea50e58a0310e4360c89d1838 [2022-11-16 12:12:15,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:12:15,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:12:15,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:12:15,481 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:12:15,482 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:12:15,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i [2022-11-16 12:12:15,587 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/data/65f3e4505/5275c0830e1742148441725cda2a1092/FLAGd52dea12d [2022-11-16 12:12:16,520 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:12:16,520 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i [2022-11-16 12:12:16,572 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/data/65f3e4505/5275c0830e1742148441725cda2a1092/FLAGd52dea12d [2022-11-16 12:12:17,065 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/data/65f3e4505/5275c0830e1742148441725cda2a1092 [2022-11-16 12:12:17,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:12:17,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:12:17,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:12:17,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:12:17,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:12:17,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:12:17" (1/1) ... [2022-11-16 12:12:17,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64f10936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:17, skipping insertion in model container [2022-11-16 12:12:17,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:12:17" (1/1) ... [2022-11-16 12:12:17,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:12:17,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:12:17,619 WARN L229 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_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i[4497,4510] [2022-11-16 12:12:17,628 WARN L229 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_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i[4557,4570] [2022-11-16 12:12:18,990 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 12:12:19,105 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:12:19,106 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:12:19,107 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:12:19,108 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:12:19,110 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:12:19,124 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:12:19,125 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:12:19,127 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:12:19,128 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:12:19,608 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 12:12:19,610 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 12:12:19,611 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 12:12:19,612 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 12:12:19,614 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 12:12:19,615 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 12:12:19,616 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 12:12:19,617 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 12:12:19,618 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 12:12:19,619 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 12:12:19,798 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:12:19,798 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:12:19,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:12:19,918 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:12:19,935 WARN L229 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_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i[4497,4510] [2022-11-16 12:12:19,935 WARN L229 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_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/sv-benchmarks/c/aws-c-common/aws_priority_queue_size_harness.i[4557,4570] [2022-11-16 12:12:19,974 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 12:12:19,992 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:12:19,993 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:12:19,994 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:12:19,994 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:12:19,995 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:12:20,005 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:12:20,006 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:12:20,007 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:12:20,008 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:12:20,051 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 12:12:20,052 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 12:12:20,053 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 12:12:20,054 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 12:12:20,056 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 12:12:20,057 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 12:12:20,057 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 12:12:20,058 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 12:12:20,059 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 12:12:20,059 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 12:12:20,155 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:12:20,157 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:12:20,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:12:20,580 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:12:20,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:20 WrapperNode [2022-11-16 12:12:20,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:12:20,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:12:20,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:12:20,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:12:20,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:20" (1/1) ... [2022-11-16 12:12:20,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:20" (1/1) ... [2022-11-16 12:12:20,798 INFO L138 Inliner]: procedures = 689, calls = 1531, calls flagged for inlining = 55, calls inlined = 10, statements flattened = 667 [2022-11-16 12:12:20,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:12:20,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:12:20,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:12:20,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:12:20,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:20" (1/1) ... [2022-11-16 12:12:20,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:20" (1/1) ... [2022-11-16 12:12:20,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:20" (1/1) ... [2022-11-16 12:12:20,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:20" (1/1) ... [2022-11-16 12:12:20,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:20" (1/1) ... [2022-11-16 12:12:20,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:20" (1/1) ... [2022-11-16 12:12:20,926 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:20" (1/1) ... [2022-11-16 12:12:20,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:20" (1/1) ... [2022-11-16 12:12:20,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:12:20,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:12:20,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:12:20,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:12:20,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:20" (1/1) ... [2022-11-16 12:12:20,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:12:20,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:12:21,016 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:12:21,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:12:21,070 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-16 12:12:21,071 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-16 12:12:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:12:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-16 12:12:21,071 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-16 12:12:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-16 12:12:21,074 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-16 12:12:21,075 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-16 12:12:21,076 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-16 12:12:21,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:12:21,076 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-16 12:12:21,078 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-16 12:12:21,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 12:12:21,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 12:12:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:12:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:12:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-11-16 12:12:21,080 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-11-16 12:12:21,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:12:21,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:12:21,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:12:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-16 12:12:21,082 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-16 12:12:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-16 12:12:21,083 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-16 12:12:21,083 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-16 12:12:21,083 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-16 12:12:21,083 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-16 12:12:21,083 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-16 12:12:21,083 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-16 12:12:21,084 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-16 12:12:21,085 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 12:12:21,085 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 12:12:21,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:12:21,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:12:21,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 12:12:21,086 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-16 12:12:21,086 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-16 12:12:21,086 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-16 12:12:21,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-16 12:12:21,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:12:21,087 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2022-11-16 12:12:21,087 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2022-11-16 12:12:21,087 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-16 12:12:21,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-16 12:12:21,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:12:21,554 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:12:21,558 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:12:22,841 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:12:22,854 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:12:22,854 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:12:22,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:12:22 BoogieIcfgContainer [2022-11-16 12:12:22,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:12:22,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:12:22,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:12:22,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:12:22,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:12:17" (1/3) ... [2022-11-16 12:12:22,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9fe014a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:12:22, skipping insertion in model container [2022-11-16 12:12:22,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:20" (2/3) ... [2022-11-16 12:12:22,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9fe014a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:12:22, skipping insertion in model container [2022-11-16 12:12:22,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:12:22" (3/3) ... [2022-11-16 12:12:22,872 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_size_harness.i [2022-11-16 12:12:22,899 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:12:22,899 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:12:23,000 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:12:23,007 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;@75397959, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:12:23,007 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:12:23,012 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 113 states have (on average 1.2300884955752212) internal successors, (139), 114 states have internal predecessors, (139), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-16 12:12:23,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-16 12:12:23,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:23,031 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-11-16 12:12:23,031 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:23,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:23,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1923135121, now seen corresponding path program 1 times [2022-11-16 12:12:23,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:23,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821020123] [2022-11-16 12:12:23,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:23,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:23,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:12:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:23,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:12:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:23,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 12:12:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:23,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 12:12:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:24,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:12:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:24,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:12:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:24,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:12:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:24,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:12:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:24,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:12:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:24,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 12:12:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:24,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 12:12:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:24,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 12:12:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:24,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 12:12:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:24,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-16 12:12:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:24,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:12:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:24,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-16 12:12:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:24,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 12:12:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:24,383 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-16 12:12:24,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:24,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821020123] [2022-11-16 12:12:24,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821020123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:24,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:24,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:12:24,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397381653] [2022-11-16 12:12:24,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:24,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:12:24,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:24,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:12:24,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:12:24,452 INFO L87 Difference]: Start difference. First operand has 171 states, 113 states have (on average 1.2300884955752212) internal successors, (139), 114 states have internal predecessors, (139), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 12:12:25,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:25,642 INFO L93 Difference]: Finished difference Result 399 states and 564 transitions. [2022-11-16 12:12:25,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:12:25,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 107 [2022-11-16 12:12:25,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:25,666 INFO L225 Difference]: With dead ends: 399 [2022-11-16 12:12:25,666 INFO L226 Difference]: Without dead ends: 234 [2022-11-16 12:12:25,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:12:25,681 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 141 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:25,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 303 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 12:12:25,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-11-16 12:12:25,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 166. [2022-11-16 12:12:25,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 110 states have internal predecessors, (132), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-16 12:12:25,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 209 transitions. [2022-11-16 12:12:25,769 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 209 transitions. Word has length 107 [2022-11-16 12:12:25,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:25,769 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 209 transitions. [2022-11-16 12:12:25,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 12:12:25,770 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 209 transitions. [2022-11-16 12:12:25,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-16 12:12:25,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:25,775 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-11-16 12:12:25,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:12:25,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:25,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:25,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1898390481, now seen corresponding path program 1 times [2022-11-16 12:12:25,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:25,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846858565] [2022-11-16 12:12:25,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:25,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:26,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:12:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:26,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:12:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:26,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 12:12:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:26,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 12:12:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:26,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:12:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:26,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:12:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:26,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:12:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:26,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:12:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:26,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:12:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:26,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 12:12:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:26,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 12:12:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:26,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 12:12:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:26,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 12:12:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:26,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-16 12:12:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:26,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:12:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:26,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-16 12:12:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:26,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 12:12:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:26,958 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-16 12:12:26,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:26,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846858565] [2022-11-16 12:12:26,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846858565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:26,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:26,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:12:26,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760337100] [2022-11-16 12:12:26,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:26,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:12:26,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:26,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:12:26,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:12:26,970 INFO L87 Difference]: Start difference. First operand 166 states and 209 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-16 12:12:28,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:28,250 INFO L93 Difference]: Finished difference Result 358 states and 477 transitions. [2022-11-16 12:12:28,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:12:28,251 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 107 [2022-11-16 12:12:28,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:28,255 INFO L225 Difference]: With dead ends: 358 [2022-11-16 12:12:28,255 INFO L226 Difference]: Without dead ends: 234 [2022-11-16 12:12:28,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:12:28,257 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 298 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:28,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 453 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 12:12:28,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-11-16 12:12:28,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 166. [2022-11-16 12:12:28,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 109 states have (on average 1.201834862385321) internal successors, (131), 110 states have internal predecessors, (131), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-16 12:12:28,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 208 transitions. [2022-11-16 12:12:28,289 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 208 transitions. Word has length 107 [2022-11-16 12:12:28,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:28,290 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 208 transitions. [2022-11-16 12:12:28,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-16 12:12:28,291 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 208 transitions. [2022-11-16 12:12:28,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-16 12:12:28,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:28,295 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-11-16 12:12:28,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:12:28,295 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:28,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:28,296 INFO L85 PathProgramCache]: Analyzing trace with hash 413511437, now seen corresponding path program 1 times [2022-11-16 12:12:28,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:28,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142123046] [2022-11-16 12:12:28,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:28,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:29,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:12:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:29,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:12:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:29,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 12:12:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:29,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 12:12:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:29,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:12:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:29,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:12:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:29,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:12:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:29,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:12:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:29,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:12:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:29,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 12:12:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:29,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:12:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:29,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 12:12:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:29,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 12:12:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:29,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 12:12:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:29,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 12:12:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:29,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 12:12:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:29,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 12:12:29,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:29,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 12:12:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:29,703 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-16 12:12:29,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:29,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142123046] [2022-11-16 12:12:29,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142123046] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:12:29,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914041410] [2022-11-16 12:12:29,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:29,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:29,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:12:29,714 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:12:29,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:12:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:30,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 2345 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:12:30,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:30,595 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-16 12:12:30,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:12:30,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914041410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:30,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:12:30,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-11-16 12:12:30,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527786642] [2022-11-16 12:12:30,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:30,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:12:30,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:30,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:12:30,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:12:30,599 INFO L87 Difference]: Start difference. First operand 166 states and 208 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-16 12:12:30,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:30,839 INFO L93 Difference]: Finished difference Result 309 states and 396 transitions. [2022-11-16 12:12:30,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:12:30,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 115 [2022-11-16 12:12:30,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:30,843 INFO L225 Difference]: With dead ends: 309 [2022-11-16 12:12:30,843 INFO L226 Difference]: Without dead ends: 168 [2022-11-16 12:12:30,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:12:30,846 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 81 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:30,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 1056 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:12:30,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-16 12:12:30,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-11-16 12:12:30,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 110 states have (on average 1.2) internal successors, (132), 112 states have internal predecessors, (132), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2022-11-16 12:12:30,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 212 transitions. [2022-11-16 12:12:30,886 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 212 transitions. Word has length 115 [2022-11-16 12:12:30,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:30,887 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 212 transitions. [2022-11-16 12:12:30,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-16 12:12:30,887 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 212 transitions. [2022-11-16 12:12:30,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-16 12:12:30,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:30,891 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-11-16 12:12:30,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:12:31,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:31,102 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:31,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:31,104 INFO L85 PathProgramCache]: Analyzing trace with hash -445935835, now seen corresponding path program 1 times [2022-11-16 12:12:31,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:31,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606473857] [2022-11-16 12:12:31,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:31,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:31,244 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:12:31,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1399274493] [2022-11-16 12:12:31,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:31,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:31,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:12:31,250 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:12:31,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:12:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:32,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 2481 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:12:32,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-16 12:12:32,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:12:32,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:32,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606473857] [2022-11-16 12:12:32,085 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:12:32,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399274493] [2022-11-16 12:12:32,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399274493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:32,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:32,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:12:32,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015139734] [2022-11-16 12:12:32,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:32,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:12:32,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:32,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:12:32,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:12:32,089 INFO L87 Difference]: Start difference. First operand 168 states and 212 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-16 12:12:32,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:32,145 INFO L93 Difference]: Finished difference Result 297 states and 384 transitions. [2022-11-16 12:12:32,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:12:32,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 130 [2022-11-16 12:12:32,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:32,152 INFO L225 Difference]: With dead ends: 297 [2022-11-16 12:12:32,152 INFO L226 Difference]: Without dead ends: 173 [2022-11-16 12:12:32,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:12:32,157 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 10 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:32,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 611 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:12:32,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-16 12:12:32,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 170. [2022-11-16 12:12:32,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 112 states have (on average 1.1964285714285714) internal successors, (134), 114 states have internal predecessors, (134), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2022-11-16 12:12:32,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 214 transitions. [2022-11-16 12:12:32,198 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 214 transitions. Word has length 130 [2022-11-16 12:12:32,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:32,200 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 214 transitions. [2022-11-16 12:12:32,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-16 12:12:32,201 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 214 transitions. [2022-11-16 12:12:32,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-16 12:12:32,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:32,205 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-11-16 12:12:32,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:12:32,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:32,416 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:32,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:32,416 INFO L85 PathProgramCache]: Analyzing trace with hash -879664921, now seen corresponding path program 1 times [2022-11-16 12:12:32,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:32,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946853603] [2022-11-16 12:12:32,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:32,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:32,546 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:12:32,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [992186238] [2022-11-16 12:12:32,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:32,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:32,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:12:32,548 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:12:32,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:12:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:33,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 2486 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:12:33,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:33,424 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-16 12:12:33,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:12:33,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:33,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946853603] [2022-11-16 12:12:33,425 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:12:33,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992186238] [2022-11-16 12:12:33,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992186238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:33,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:33,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:12:33,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452626887] [2022-11-16 12:12:33,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:33,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:12:33,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:33,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:12:33,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:12:33,431 INFO L87 Difference]: Start difference. First operand 170 states and 214 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-16 12:12:33,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:33,786 INFO L93 Difference]: Finished difference Result 299 states and 378 transitions. [2022-11-16 12:12:33,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:12:33,787 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 130 [2022-11-16 12:12:33,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:33,789 INFO L225 Difference]: With dead ends: 299 [2022-11-16 12:12:33,789 INFO L226 Difference]: Without dead ends: 170 [2022-11-16 12:12:33,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:12:33,791 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 243 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:33,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 808 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:12:33,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-16 12:12:33,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-11-16 12:12:33,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 112 states have (on average 1.1875) internal successors, (133), 114 states have internal predecessors, (133), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2022-11-16 12:12:33,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 213 transitions. [2022-11-16 12:12:33,812 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 213 transitions. Word has length 130 [2022-11-16 12:12:33,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:33,813 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 213 transitions. [2022-11-16 12:12:33,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-16 12:12:33,813 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 213 transitions. [2022-11-16 12:12:33,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-16 12:12:33,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:33,816 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 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] [2022-11-16 12:12:33,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:12:34,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:34,037 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:34,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:34,038 INFO L85 PathProgramCache]: Analyzing trace with hash 391202648, now seen corresponding path program 1 times [2022-11-16 12:12:34,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:34,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576896614] [2022-11-16 12:12:34,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:34,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:34,201 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:12:34,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301536549] [2022-11-16 12:12:34,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:34,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:34,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:12:34,204 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:12:34,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:12:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:34,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 2558 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:12:34,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:35,128 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-16 12:12:35,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:12:35,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:35,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576896614] [2022-11-16 12:12:35,130 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:12:35,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301536549] [2022-11-16 12:12:35,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301536549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:35,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:35,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:12:35,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122938200] [2022-11-16 12:12:35,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:35,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:12:35,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:35,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:12:35,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:12:35,135 INFO L87 Difference]: Start difference. First operand 170 states and 213 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2022-11-16 12:12:35,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:35,410 INFO L93 Difference]: Finished difference Result 312 states and 395 transitions. [2022-11-16 12:12:35,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:12:35,412 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 146 [2022-11-16 12:12:35,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:35,416 INFO L225 Difference]: With dead ends: 312 [2022-11-16 12:12:35,416 INFO L226 Difference]: Without dead ends: 170 [2022-11-16 12:12:35,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:12:35,419 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 104 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:35,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 1168 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:12:35,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-16 12:12:35,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-11-16 12:12:35,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 112 states have (on average 1.1875) internal successors, (133), 114 states have internal predecessors, (133), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2022-11-16 12:12:35,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 212 transitions. [2022-11-16 12:12:35,442 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 212 transitions. Word has length 146 [2022-11-16 12:12:35,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:35,443 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 212 transitions. [2022-11-16 12:12:35,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2022-11-16 12:12:35,444 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 212 transitions. [2022-11-16 12:12:35,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-16 12:12:35,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:35,447 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:12:35,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:12:35,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:35,657 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:35,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:35,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1071073244, now seen corresponding path program 2 times [2022-11-16 12:12:35,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:35,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819417710] [2022-11-16 12:12:35,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:35,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:35,799 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:12:35,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1050751211] [2022-11-16 12:12:35,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:12:35,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:35,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:12:35,802 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:12:35,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:12:36,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:12:36,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:12:36,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-16 12:12:36,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:37,198 INFO L321 Elim1Store]: treesize reduction 60, result has 50.4 percent of original size [2022-11-16 12:12:37,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 105 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 109 [2022-11-16 12:12:38,510 WARN L718 sPolynomialRelations]: Constructing 32768(two to the power of 15 dual juncts. [2022-11-16 12:12:41,093 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-16 12:12:41,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:12:41,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:41,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819417710] [2022-11-16 12:12:41,094 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:12:41,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050751211] [2022-11-16 12:12:41,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050751211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:41,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:41,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:12:41,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657093067] [2022-11-16 12:12:41,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:41,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:12:41,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:41,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:12:41,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:12:41,098 INFO L87 Difference]: Start difference. First operand 170 states and 212 transitions. Second operand has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-16 12:12:41,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:41,965 INFO L93 Difference]: Finished difference Result 313 states and 383 transitions. [2022-11-16 12:12:41,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:12:41,968 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 161 [2022-11-16 12:12:41,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:41,971 INFO L225 Difference]: With dead ends: 313 [2022-11-16 12:12:41,971 INFO L226 Difference]: Without dead ends: 202 [2022-11-16 12:12:41,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:12:41,973 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 120 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:41,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 1312 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:12:41,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-16 12:12:42,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 172. [2022-11-16 12:12:42,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 114 states have (on average 1.1754385964912282) internal successors, (134), 115 states have internal predecessors, (134), 39 states have call successors, (39), 18 states have call predecessors, (39), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-16 12:12:42,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 211 transitions. [2022-11-16 12:12:42,007 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 211 transitions. Word has length 161 [2022-11-16 12:12:42,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:42,008 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 211 transitions. [2022-11-16 12:12:42,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-16 12:12:42,009 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 211 transitions. [2022-11-16 12:12:42,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-16 12:12:42,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:42,012 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:12:42,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:12:42,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 12:12:42,225 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:42,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:42,226 INFO L85 PathProgramCache]: Analyzing trace with hash 153523288, now seen corresponding path program 1 times [2022-11-16 12:12:42,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:42,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474158581] [2022-11-16 12:12:42,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:42,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:42,365 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:12:42,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1454204329] [2022-11-16 12:12:42,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:42,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:42,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:12:42,367 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:12:42,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:12:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:43,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:12:43,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:43,484 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-16 12:12:43,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:12:43,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:43,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474158581] [2022-11-16 12:12:43,485 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:12:43,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454204329] [2022-11-16 12:12:43,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454204329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:43,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:43,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:12:43,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230819467] [2022-11-16 12:12:43,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:43,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:12:43,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:43,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:12:43,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:12:43,488 INFO L87 Difference]: Start difference. First operand 172 states and 211 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-16 12:12:43,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:43,920 INFO L93 Difference]: Finished difference Result 314 states and 392 transitions. [2022-11-16 12:12:43,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:12:43,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 191 [2022-11-16 12:12:43,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:43,923 INFO L225 Difference]: With dead ends: 314 [2022-11-16 12:12:43,923 INFO L226 Difference]: Without dead ends: 190 [2022-11-16 12:12:43,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:12:43,925 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 23 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:43,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 899 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:12:43,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-16 12:12:43,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 176. [2022-11-16 12:12:43,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 118 states have (on average 1.1779661016949152) internal successors, (139), 119 states have internal predecessors, (139), 39 states have call successors, (39), 18 states have call predecessors, (39), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-16 12:12:43,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 216 transitions. [2022-11-16 12:12:43,967 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 216 transitions. Word has length 191 [2022-11-16 12:12:43,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:43,968 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 216 transitions. [2022-11-16 12:12:43,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-16 12:12:43,969 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 216 transitions. [2022-11-16 12:12:43,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-16 12:12:43,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:43,972 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:12:43,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:12:44,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 12:12:44,185 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:44,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:44,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1805051498, now seen corresponding path program 1 times [2022-11-16 12:12:44,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:44,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172235725] [2022-11-16 12:12:44,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:44,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:44,291 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:12:44,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086179330] [2022-11-16 12:12:44,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:44,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:44,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:12:44,297 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:12:44,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:12:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:45,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 2978 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:12:45,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:45,222 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-16 12:12:45,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:12:45,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:45,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172235725] [2022-11-16 12:12:45,223 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:12:45,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086179330] [2022-11-16 12:12:45,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086179330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:45,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:45,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:12:45,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44566667] [2022-11-16 12:12:45,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:45,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:12:45,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:45,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:12:45,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:12:45,227 INFO L87 Difference]: Start difference. First operand 176 states and 216 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-16 12:12:45,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:45,292 INFO L93 Difference]: Finished difference Result 308 states and 382 transitions. [2022-11-16 12:12:45,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:12:45,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 191 [2022-11-16 12:12:45,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:45,300 INFO L225 Difference]: With dead ends: 308 [2022-11-16 12:12:45,300 INFO L226 Difference]: Without dead ends: 180 [2022-11-16 12:12:45,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:12:45,305 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 3 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:45,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 604 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:12:45,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-11-16 12:12:45,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2022-11-16 12:12:45,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 120 states have (on average 1.175) internal successors, (141), 121 states have internal predecessors, (141), 39 states have call successors, (39), 18 states have call predecessors, (39), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-16 12:12:45,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 218 transitions. [2022-11-16 12:12:45,338 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 218 transitions. Word has length 191 [2022-11-16 12:12:45,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:45,339 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 218 transitions. [2022-11-16 12:12:45,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-16 12:12:45,340 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 218 transitions. [2022-11-16 12:12:45,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-16 12:12:45,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:45,344 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:12:45,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:12:45,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:45,562 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:45,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:45,562 INFO L85 PathProgramCache]: Analyzing trace with hash 610784852, now seen corresponding path program 1 times [2022-11-16 12:12:45,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:45,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468393737] [2022-11-16 12:12:45,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:45,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:45,653 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:12:45,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [696465027] [2022-11-16 12:12:45,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:45,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:45,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:12:45,656 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:12:45,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:12:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:46,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 2973 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-16 12:12:46,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:46,689 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 11 treesize of output 5 [2022-11-16 12:12:46,729 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-16 12:12:46,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:12:46,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:46,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468393737] [2022-11-16 12:12:46,730 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:12:46,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696465027] [2022-11-16 12:12:46,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696465027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:46,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:46,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:12:46,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476348336] [2022-11-16 12:12:46,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:46,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:12:46,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:46,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:12:46,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:12:46,733 INFO L87 Difference]: Start difference. First operand 178 states and 218 transitions. Second operand has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 6 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-11-16 12:12:47,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:47,538 INFO L93 Difference]: Finished difference Result 334 states and 419 transitions. [2022-11-16 12:12:47,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:12:47,539 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 6 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 191 [2022-11-16 12:12:47,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:47,541 INFO L225 Difference]: With dead ends: 334 [2022-11-16 12:12:47,541 INFO L226 Difference]: Without dead ends: 204 [2022-11-16 12:12:47,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:12:47,543 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 115 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:47,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1617 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:12:47,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-11-16 12:12:47,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 185. [2022-11-16 12:12:47,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 126 states have (on average 1.1746031746031746) internal successors, (148), 127 states have internal predecessors, (148), 39 states have call successors, (39), 18 states have call predecessors, (39), 19 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2022-11-16 12:12:47,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 229 transitions. [2022-11-16 12:12:47,578 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 229 transitions. Word has length 191 [2022-11-16 12:12:47,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:47,579 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 229 transitions. [2022-11-16 12:12:47,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 6 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-11-16 12:12:47,579 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 229 transitions. [2022-11-16 12:12:47,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-16 12:12:47,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:47,583 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:12:47,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-16 12:12:47,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:12:47,797 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:47,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:47,797 INFO L85 PathProgramCache]: Analyzing trace with hash -841170410, now seen corresponding path program 1 times [2022-11-16 12:12:47,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:47,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305013140] [2022-11-16 12:12:47,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:47,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:47,928 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:12:47,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586894218] [2022-11-16 12:12:47,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:47,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:47,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:12:47,931 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:12:47,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:12:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:48,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 2976 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 12:12:48,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:48,868 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-16 12:12:48,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:12:48,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:48,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305013140] [2022-11-16 12:12:48,869 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:12:48,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586894218] [2022-11-16 12:12:48,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586894218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:48,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:48,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:12:48,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852669237] [2022-11-16 12:12:48,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:48,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:12:48,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:48,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:12:48,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:12:48,873 INFO L87 Difference]: Start difference. First operand 185 states and 229 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-16 12:12:48,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:48,961 INFO L93 Difference]: Finished difference Result 332 states and 416 transitions. [2022-11-16 12:12:48,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:12:48,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 191 [2022-11-16 12:12:48,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:48,964 INFO L225 Difference]: With dead ends: 332 [2022-11-16 12:12:48,965 INFO L226 Difference]: Without dead ends: 195 [2022-11-16 12:12:48,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:12:48,967 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 9 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:48,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 807 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:12:48,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-16 12:12:48,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 189. [2022-11-16 12:12:48,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 130 states have (on average 1.1692307692307693) internal successors, (152), 131 states have internal predecessors, (152), 39 states have call successors, (39), 18 states have call predecessors, (39), 19 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2022-11-16 12:12:48,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 233 transitions. [2022-11-16 12:12:49,000 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 233 transitions. Word has length 191 [2022-11-16 12:12:49,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:49,001 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 233 transitions. [2022-11-16 12:12:49,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-16 12:12:49,001 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 233 transitions. [2022-11-16 12:12:49,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-16 12:12:49,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:49,004 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-16 12:12:49,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:12:49,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:49,218 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:49,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:49,219 INFO L85 PathProgramCache]: Analyzing trace with hash 955866556, now seen corresponding path program 1 times [2022-11-16 12:12:49,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:49,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226720054] [2022-11-16 12:12:49,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:49,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:49,330 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:12:49,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685889701] [2022-11-16 12:12:49,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:49,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:49,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:12:49,333 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:12:49,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:12:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:50,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 2973 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:12:50,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:50,326 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-16 12:12:50,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:12:50,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:50,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226720054] [2022-11-16 12:12:50,327 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:12:50,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685889701] [2022-11-16 12:12:50,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685889701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:50,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:50,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:12:50,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442708151] [2022-11-16 12:12:50,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:50,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:12:50,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:50,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:12:50,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:12:50,330 INFO L87 Difference]: Start difference. First operand 189 states and 233 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, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-16 12:12:50,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:50,665 INFO L93 Difference]: Finished difference Result 330 states and 416 transitions. [2022-11-16 12:12:50,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:12:50,666 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, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 193 [2022-11-16 12:12:50,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:50,668 INFO L225 Difference]: With dead ends: 330 [2022-11-16 12:12:50,668 INFO L226 Difference]: Without dead ends: 189 [2022-11-16 12:12:50,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:12:50,670 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 10 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:50,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 755 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:12:50,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-16 12:12:50,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2022-11-16 12:12:50,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 130 states have (on average 1.1615384615384616) internal successors, (151), 131 states have internal predecessors, (151), 39 states have call successors, (39), 18 states have call predecessors, (39), 19 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2022-11-16 12:12:50,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 232 transitions. [2022-11-16 12:12:50,703 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 232 transitions. Word has length 193 [2022-11-16 12:12:50,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:50,704 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 232 transitions. [2022-11-16 12:12:50,704 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, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-16 12:12:50,705 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 232 transitions. [2022-11-16 12:12:50,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-16 12:12:50,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:50,707 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-16 12:12:50,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:12:50,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:50,920 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:50,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:50,921 INFO L85 PathProgramCache]: Analyzing trace with hash -100864646, now seen corresponding path program 1 times [2022-11-16 12:12:50,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:50,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700358518] [2022-11-16 12:12:50,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:50,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:51,022 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:12:51,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660207515] [2022-11-16 12:12:51,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:51,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:51,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:12:51,025 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:12:51,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:12:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:52,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 2978 conjuncts, 103 conjunts are in the unsatisfiable core [2022-11-16 12:12:52,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:54,489 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 12:12:54,489 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 33 treesize of output 13 [2022-11-16 12:12:54,503 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 12:12:54,504 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 40 treesize of output 20 [2022-11-16 12:12:54,512 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 12:12:54,513 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 36 treesize of output 16 [2022-11-16 12:12:54,763 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 129 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 12:12:54,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:12:58,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:58,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700358518] [2022-11-16 12:12:58,125 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:12:58,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660207515] [2022-11-16 12:12:58,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660207515] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:12:58,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:12:58,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-11-16 12:12:58,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161351584] [2022-11-16 12:12:58,127 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:12:58,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 12:12:58,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:58,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 12:12:58,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2022-11-16 12:12:58,129 INFO L87 Difference]: Start difference. First operand 189 states and 232 transitions. Second operand has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 20 states have internal predecessors, (98), 8 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) [2022-11-16 12:13:05,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:05,538 INFO L93 Difference]: Finished difference Result 425 states and 540 transitions. [2022-11-16 12:13:05,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 12:13:05,538 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 20 states have internal predecessors, (98), 8 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) Word has length 193 [2022-11-16 12:13:05,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:05,541 INFO L225 Difference]: With dead ends: 425 [2022-11-16 12:13:05,541 INFO L226 Difference]: Without dead ends: 296 [2022-11-16 12:13:05,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 228 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=354, Invalid=3186, Unknown=0, NotChecked=0, Total=3540 [2022-11-16 12:13:05,544 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 331 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 3239 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 3604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 3239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 246 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:05,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 1325 Invalid, 3604 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [119 Valid, 3239 Invalid, 0 Unknown, 246 Unchecked, 4.5s Time] [2022-11-16 12:13:05,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-11-16 12:13:05,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 214. [2022-11-16 12:13:05,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 148 states have (on average 1.1554054054054055) internal successors, (171), 151 states have internal predecessors, (171), 43 states have call successors, (43), 19 states have call predecessors, (43), 22 states have return successors, (51), 43 states have call predecessors, (51), 42 states have call successors, (51) [2022-11-16 12:13:05,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 265 transitions. [2022-11-16 12:13:05,613 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 265 transitions. Word has length 193 [2022-11-16 12:13:05,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:05,614 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 265 transitions. [2022-11-16 12:13:05,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 20 states have internal predecessors, (98), 8 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) [2022-11-16 12:13:05,615 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 265 transitions. [2022-11-16 12:13:05,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-16 12:13:05,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:05,617 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-16 12:13:05,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:05,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:05,835 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:13:05,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:05,835 INFO L85 PathProgramCache]: Analyzing trace with hash -348469826, now seen corresponding path program 1 times [2022-11-16 12:13:05,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:05,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830643954] [2022-11-16 12:13:05,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:05,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:05,928 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:13:05,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [667108429] [2022-11-16 12:13:05,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:05,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:05,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:05,931 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:05,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:13:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:06,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 3023 conjuncts, 108 conjunts are in the unsatisfiable core [2022-11-16 12:13:06,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:06,925 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 [2022-11-16 12:13:07,396 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 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:13:09,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:09,489 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 23 treesize of output 22 [2022-11-16 12:13:12,697 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1884 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1884) |c_#memory_int|)) is different from true [2022-11-16 12:13:13,742 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 140 proven. 19 refuted. 3 times theorem prover too weak. 52 trivial. 3 not checked. [2022-11-16 12:13:13,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:13:14,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:14,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830643954] [2022-11-16 12:13:14,705 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:13:14,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667108429] [2022-11-16 12:13:14,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667108429] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:13:14,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:13:14,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-11-16 12:13:14,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566929997] [2022-11-16 12:13:14,706 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:13:14,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 12:13:14,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:14,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 12:13:14,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=855, Unknown=39, NotChecked=60, Total=1056 [2022-11-16 12:13:14,708 INFO L87 Difference]: Start difference. First operand 214 states and 265 transitions. Second operand has 32 states, 28 states have (on average 4.107142857142857) internal successors, (115), 27 states have internal predecessors, (115), 12 states have call successors, (28), 7 states have call predecessors, (28), 12 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) [2022-11-16 12:13:15,339 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1884 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1884) |c_#memory_int|)) (exists ((v_ArrVal_1882 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1882) |c_#memory_int|)) (exists ((v_ArrVal_1881 Int) (|v___CPROVER_overflow_mult_~#c~1.base_88| Int)) (and (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_88| v_ArrVal_1881)) (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_88|) 0)))) is different from true [2022-11-16 12:13:16,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:16,336 INFO L93 Difference]: Finished difference Result 462 states and 585 transitions. [2022-11-16 12:13:16,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 12:13:16,337 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 4.107142857142857) internal successors, (115), 27 states have internal predecessors, (115), 12 states have call successors, (28), 7 states have call predecessors, (28), 12 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) Word has length 200 [2022-11-16 12:13:16,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:16,340 INFO L225 Difference]: With dead ends: 462 [2022-11-16 12:13:16,340 INFO L226 Difference]: Without dead ends: 299 [2022-11-16 12:13:16,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 245 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=136, Invalid=1226, Unknown=52, NotChecked=146, Total=1560 [2022-11-16 12:13:16,342 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 137 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 2611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1723 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:16,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 1435 Invalid, 2611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 801 Invalid, 0 Unknown, 1723 Unchecked, 1.0s Time] [2022-11-16 12:13:16,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-16 12:13:16,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 278. [2022-11-16 12:13:16,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 196 states have (on average 1.153061224489796) internal successors, (226), 202 states have internal predecessors, (226), 50 states have call successors, (50), 24 states have call predecessors, (50), 31 states have return successors, (77), 51 states have call predecessors, (77), 49 states have call successors, (77) [2022-11-16 12:13:16,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 353 transitions. [2022-11-16 12:13:16,401 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 353 transitions. Word has length 200 [2022-11-16 12:13:16,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:16,402 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 353 transitions. [2022-11-16 12:13:16,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 4.107142857142857) internal successors, (115), 27 states have internal predecessors, (115), 12 states have call successors, (28), 7 states have call predecessors, (28), 12 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) [2022-11-16 12:13:16,404 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 353 transitions. [2022-11-16 12:13:16,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-16 12:13:16,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:16,407 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:16,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:16,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 12:13:16,623 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:13:16,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:16,623 INFO L85 PathProgramCache]: Analyzing trace with hash 812359656, now seen corresponding path program 1 times [2022-11-16 12:13:16,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:16,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132426713] [2022-11-16 12:13:16,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:16,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:16,743 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:13:16,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1396165106] [2022-11-16 12:13:16,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:16,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:16,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:16,744 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:16,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 12:13:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:17,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 3035 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-16 12:13:17,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-16 12:13:17,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:17,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:17,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132426713] [2022-11-16 12:13:17,835 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:13:17,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396165106] [2022-11-16 12:13:17,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396165106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:17,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:17,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 12:13:17,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217619080] [2022-11-16 12:13:17,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:17,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:13:17,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:17,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:13:17,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:13:17,838 INFO L87 Difference]: Start difference. First operand 278 states and 353 transitions. Second operand has 14 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 states have internal predecessors, (109), 4 states have call successors, (26), 2 states have call predecessors, (26), 6 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-16 12:13:18,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:18,222 INFO L93 Difference]: Finished difference Result 474 states and 601 transitions. [2022-11-16 12:13:18,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:13:18,226 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 states have internal predecessors, (109), 4 states have call successors, (26), 2 states have call predecessors, (26), 6 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) Word has length 218 [2022-11-16 12:13:18,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:18,230 INFO L225 Difference]: With dead ends: 474 [2022-11-16 12:13:18,231 INFO L226 Difference]: Without dead ends: 302 [2022-11-16 12:13:18,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:13:18,233 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 12 mSDsluCounter, 2450 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:18,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2661 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:13:18,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-16 12:13:18,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 297. [2022-11-16 12:13:18,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 212 states have (on average 1.1556603773584906) internal successors, (245), 220 states have internal predecessors, (245), 50 states have call successors, (50), 24 states have call predecessors, (50), 34 states have return successors, (82), 52 states have call predecessors, (82), 49 states have call successors, (82) [2022-11-16 12:13:18,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 377 transitions. [2022-11-16 12:13:18,294 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 377 transitions. Word has length 218 [2022-11-16 12:13:18,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:18,295 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 377 transitions. [2022-11-16 12:13:18,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 states have internal predecessors, (109), 4 states have call successors, (26), 2 states have call predecessors, (26), 6 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-16 12:13:18,296 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 377 transitions. [2022-11-16 12:13:18,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-16 12:13:18,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:18,298 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:18,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:18,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:13:18,512 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:13:18,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:18,513 INFO L85 PathProgramCache]: Analyzing trace with hash 221801980, now seen corresponding path program 1 times [2022-11-16 12:13:18,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:18,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329623933] [2022-11-16 12:13:18,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:18,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:18,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:18,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329623933] [2022-11-16 12:13:18,681 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 12:13:18,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166468054] [2022-11-16 12:13:18,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:18,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:18,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:18,683 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:18,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 12:13:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:19,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 3020 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:13:19,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:19,720 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-11-16 12:13:19,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:19,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166468054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:19,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:19,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:13:19,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394994] [2022-11-16 12:13:19,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:19,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:13:19,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:19,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:13:19,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:13:19,724 INFO L87 Difference]: Start difference. First operand 297 states and 377 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-16 12:13:19,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:19,805 INFO L93 Difference]: Finished difference Result 570 states and 722 transitions. [2022-11-16 12:13:19,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:13:19,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 200 [2022-11-16 12:13:19,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:19,809 INFO L225 Difference]: With dead ends: 570 [2022-11-16 12:13:19,810 INFO L226 Difference]: Without dead ends: 291 [2022-11-16 12:13:19,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:13:19,813 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 407 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 [2022-11-16 12:13:19,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 407 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:13:19,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-16 12:13:19,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2022-11-16 12:13:19,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 209 states have (on average 1.1531100478468899) internal successors, (241), 216 states have internal predecessors, (241), 48 states have call successors, (48), 24 states have call predecessors, (48), 33 states have return successors, (77), 50 states have call predecessors, (77), 47 states have call successors, (77) [2022-11-16 12:13:19,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 366 transitions. [2022-11-16 12:13:19,886 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 366 transitions. Word has length 200 [2022-11-16 12:13:19,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:19,886 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 366 transitions. [2022-11-16 12:13:19,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-16 12:13:19,887 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 366 transitions. [2022-11-16 12:13:19,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-16 12:13:19,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:19,891 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:19,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:20,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:13:20,110 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:13:20,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:20,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1906601215, now seen corresponding path program 1 times [2022-11-16 12:13:20,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:20,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036576843] [2022-11-16 12:13:20,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:20,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:20,245 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:13:20,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413935388] [2022-11-16 12:13:20,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:20,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:20,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:20,248 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:20,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 12:13:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:21,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 3070 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-16 12:13:21,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:21,334 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-16 12:13:21,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:21,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:21,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036576843] [2022-11-16 12:13:21,335 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:13:21,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413935388] [2022-11-16 12:13:21,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413935388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:21,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:21,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:13:21,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080310746] [2022-11-16 12:13:21,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:21,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:13:21,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:21,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:13:21,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:13:21,339 INFO L87 Difference]: Start difference. First operand 291 states and 366 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 8 states have internal predecessors, (114), 2 states have call successors, (29), 2 states have call predecessors, (29), 5 states have return successors, (28), 5 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-16 12:13:21,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:21,556 INFO L93 Difference]: Finished difference Result 526 states and 671 transitions. [2022-11-16 12:13:21,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:13:21,557 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 8 states have internal predecessors, (114), 2 states have call successors, (29), 2 states have call predecessors, (29), 5 states have return successors, (28), 5 states have call predecessors, (28), 2 states have call successors, (28) Word has length 218 [2022-11-16 12:13:21,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:21,560 INFO L225 Difference]: With dead ends: 526 [2022-11-16 12:13:21,560 INFO L226 Difference]: Without dead ends: 301 [2022-11-16 12:13:21,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:13:21,563 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 13 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:21,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2183 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:13:21,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-16 12:13:21,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 289. [2022-11-16 12:13:21,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 208 states have (on average 1.1538461538461537) internal successors, (240), 213 states have internal predecessors, (240), 48 states have call successors, (48), 24 states have call predecessors, (48), 32 states have return successors, (73), 51 states have call predecessors, (73), 47 states have call successors, (73) [2022-11-16 12:13:21,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 361 transitions. [2022-11-16 12:13:21,613 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 361 transitions. Word has length 218 [2022-11-16 12:13:21,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:21,613 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 361 transitions. [2022-11-16 12:13:21,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 8 states have internal predecessors, (114), 2 states have call successors, (29), 2 states have call predecessors, (29), 5 states have return successors, (28), 5 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-16 12:13:21,614 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 361 transitions. [2022-11-16 12:13:21,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-16 12:13:21,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:21,617 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-11-16 12:13:21,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:21,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 12:13:21,830 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:13:21,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:21,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2062409755, now seen corresponding path program 1 times [2022-11-16 12:13:21,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:21,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599619899] [2022-11-16 12:13:21,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:21,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:21,934 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:13:21,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [869882206] [2022-11-16 12:13:21,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:21,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:21,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:21,937 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:21,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 12:13:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:23,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 3062 conjuncts, 181 conjunts are in the unsatisfiable core [2022-11-16 12:13:23,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:23,044 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 [2022-11-16 12:13:23,558 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 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:13:36,705 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:13:36,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 37 treesize of output 39 [2022-11-16 12:13:36,718 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 [2022-11-16 12:13:43,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 62 [2022-11-16 12:13:43,249 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 12:13:43,249 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 [2022-11-16 12:13:43,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:43,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:43,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:43,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 51 [2022-11-16 12:13:45,758 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2729 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2729) |c_#memory_int|)) is different from true [2022-11-16 12:13:46,254 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2730 Int)) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2730)) |c_#memory_int|)) is different from true [2022-11-16 12:13:46,544 WARN L855 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_2730 Int)) (= (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base|) 0 v_ArrVal_2730)) |c_#memory_int|))) is different from true [2022-11-16 12:13:47,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:47,938 INFO L321 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2022-11-16 12:13:47,939 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 65 treesize of output 1 [2022-11-16 12:13:47,947 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 129 proven. 15 refuted. 4 times theorem prover too weak. 54 trivial. 8 not checked. [2022-11-16 12:13:47,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:13:50,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:50,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599619899] [2022-11-16 12:13:50,169 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:13:50,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869882206] [2022-11-16 12:13:50,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869882206] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:13:50,169 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:13:50,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2022-11-16 12:13:50,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370154251] [2022-11-16 12:13:50,170 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:13:50,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-16 12:13:50,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:50,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-16 12:13:50,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=2058, Unknown=36, NotChecked=282, Total=2550 [2022-11-16 12:13:50,173 INFO L87 Difference]: Start difference. First operand 289 states and 361 transitions. Second operand has 44 states, 39 states have (on average 3.0) internal successors, (117), 37 states have internal predecessors, (117), 15 states have call successors, (29), 9 states have call predecessors, (29), 13 states have return successors, (27), 14 states have call predecessors, (27), 15 states have call successors, (27) [2022-11-16 12:13:59,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:59,209 INFO L93 Difference]: Finished difference Result 560 states and 700 transitions. [2022-11-16 12:13:59,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-16 12:13:59,210 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 39 states have (on average 3.0) internal successors, (117), 37 states have internal predecessors, (117), 15 states have call successors, (29), 9 states have call predecessors, (29), 13 states have return successors, (27), 14 states have call predecessors, (27), 15 states have call successors, (27) Word has length 206 [2022-11-16 12:13:59,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:59,213 INFO L225 Difference]: With dead ends: 560 [2022-11-16 12:13:59,213 INFO L226 Difference]: Without dead ends: 340 [2022-11-16 12:13:59,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 231 SyntacticMatches, 10 SemanticMatches, 62 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1343 ImplicationChecksByTransitivity, 30.9s TimeCoverageRelationStatistics Valid=268, Invalid=3355, Unknown=49, NotChecked=360, Total=4032 [2022-11-16 12:13:59,216 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 122 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 4808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3288 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:59,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 1893 Invalid, 4808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1472 Invalid, 0 Unknown, 3288 Unchecked, 1.7s Time] [2022-11-16 12:13:59,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-11-16 12:13:59,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 321. [2022-11-16 12:13:59,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 230 states have (on average 1.1521739130434783) internal successors, (265), 237 states have internal predecessors, (265), 52 states have call successors, (52), 28 states have call predecessors, (52), 38 states have return successors, (82), 55 states have call predecessors, (82), 51 states have call successors, (82) [2022-11-16 12:13:59,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 399 transitions. [2022-11-16 12:13:59,274 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 399 transitions. Word has length 206 [2022-11-16 12:13:59,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:59,275 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 399 transitions. [2022-11-16 12:13:59,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 39 states have (on average 3.0) internal successors, (117), 37 states have internal predecessors, (117), 15 states have call successors, (29), 9 states have call predecessors, (29), 13 states have return successors, (27), 14 states have call predecessors, (27), 15 states have call successors, (27) [2022-11-16 12:13:59,276 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 399 transitions. [2022-11-16 12:13:59,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-16 12:13:59,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:59,278 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-11-16 12:13:59,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:59,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:13:59,493 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:13:59,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:59,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1542726051, now seen corresponding path program 1 times [2022-11-16 12:13:59,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:59,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506310384] [2022-11-16 12:13:59,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:59,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:59,604 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:13:59,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544818966] [2022-11-16 12:13:59,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:59,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:59,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:59,607 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:59,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 12:14:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:01,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 3059 conjuncts, 363 conjunts are in the unsatisfiable core [2022-11-16 12:14:01,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:01,635 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 [2022-11-16 12:14:01,872 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 [2022-11-16 12:14:01,959 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 12:14:01,959 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 [2022-11-16 12:14:02,452 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 [2022-11-16 12:14:03,985 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 12:14:03,985 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 32 treesize of output 41 [2022-11-16 12:14:06,541 INFO L321 Elim1Store]: treesize reduction 285, result has 23.6 percent of original size [2022-11-16 12:14:06,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 22 case distinctions, treesize of input 2571 treesize of output 2594 [2022-11-16 12:14:08,051 INFO L321 Elim1Store]: treesize reduction 152, result has 22.8 percent of original size [2022-11-16 12:14:08,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 39 treesize of output 69 [2022-11-16 12:14:08,270 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 10 treesize of output 6 [2022-11-16 12:14:09,014 INFO L321 Elim1Store]: treesize reduction 190, result has 23.4 percent of original size [2022-11-16 12:14:09,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 44 treesize of output 85 [2022-11-16 12:14:09,340 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 10 treesize of output 6 [2022-11-16 12:14:10,145 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 [2022-11-16 12:14:14,709 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 19 treesize of output 21 [2022-11-16 12:14:46,465 WARN L233 SmtUtils]: Spent 7.45s on a formula simplification. DAG size of input: 55 DAG size of output: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:14:47,015 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:14:47,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:14:47,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 228 [2022-11-16 12:14:49,637 INFO L321 Elim1Store]: treesize reduction 56, result has 75.1 percent of original size [2022-11-16 12:14:49,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 8 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 132 treesize of output 282 [2022-11-16 12:15:09,440 INFO L321 Elim1Store]: treesize reduction 88, result has 25.4 percent of original size [2022-11-16 12:15:09,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 469 treesize of output 467 [2022-11-16 12:15:09,498 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 17 treesize of output 15 [2022-11-16 12:15:09,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 301 treesize of output 285 [2022-11-16 12:15:10,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:10,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:10,148 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 52 treesize of output 42 [2022-11-16 12:15:10,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:10,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:10,198 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 52 treesize of output 42 [2022-11-16 12:15:10,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:10,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:10,235 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 52 treesize of output 42 [2022-11-16 12:15:10,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:10,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:10,276 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 73 treesize of output 51 [2022-11-16 12:15:11,266 INFO L321 Elim1Store]: treesize reduction 88, result has 25.4 percent of original size [2022-11-16 12:15:11,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 297 treesize of output 303 [2022-11-16 12:15:11,305 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 17 treesize of output 15 [2022-11-16 12:15:11,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 133 [2022-11-16 12:15:11,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:11,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:11,611 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 130 treesize of output 104 [2022-11-16 12:15:11,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:11,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:11,681 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 73 treesize of output 51 [2022-11-16 12:15:12,204 INFO L321 Elim1Store]: treesize reduction 101, result has 15.1 percent of original size [2022-11-16 12:15:12,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 185 treesize of output 179 [2022-11-16 12:15:12,228 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 23 treesize of output 21 [2022-11-16 12:15:14,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:14,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:14,077 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 133 treesize of output 103 [2022-11-16 12:15:18,713 INFO L321 Elim1Store]: treesize reduction 101, result has 15.1 percent of original size [2022-11-16 12:15:18,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 185 treesize of output 179 [2022-11-16 12:15:18,759 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 23 treesize of output 21 [2022-11-16 12:15:19,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:19,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:19,662 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 133 treesize of output 103 [2022-11-16 12:16:13,030 WARN L233 SmtUtils]: Spent 32.62s on a formula simplification. DAG size of input: 209 DAG size of output: 168 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:17:00,661 WARN L233 SmtUtils]: Spent 6.27s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:17:07,050 INFO L321 Elim1Store]: treesize reduction 72, result has 28.7 percent of original size [2022-11-16 12:17:07,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 238 treesize of output 364 [2022-11-16 12:17:07,895 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 67 proven. 107 refuted. 15 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 12:17:07,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:17:15,512 WARN L233 SmtUtils]: Spent 6.70s on a formula simplification that was a NOOP. DAG size: 125 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 12:17:27,610 WARN L233 SmtUtils]: Spent 12.09s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 12:17:40,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:40,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506310384] [2022-11-16 12:17:40,143 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:17:40,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544818966] [2022-11-16 12:17:40,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544818966] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:17:40,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:17:40,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2022-11-16 12:17:40,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698927316] [2022-11-16 12:17:40,144 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:17:40,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-11-16 12:17:40,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:40,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-11-16 12:17:40,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=5716, Unknown=142, NotChecked=0, Total=6162 [2022-11-16 12:17:40,148 INFO L87 Difference]: Start difference. First operand 321 states and 399 transitions. Second operand has 75 states, 62 states have (on average 2.1774193548387095) internal successors, (135), 58 states have internal predecessors, (135), 24 states have call successors, (30), 13 states have call predecessors, (30), 20 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) [2022-11-16 12:17:56,053 WARN L233 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 88 DAG size of output: 73 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:18:13,563 WARN L233 SmtUtils]: Spent 6.99s on a formula simplification. DAG size of input: 70 DAG size of output: 63 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:18:51,084 WARN L233 SmtUtils]: Spent 33.62s on a formula simplification. DAG size of input: 80 DAG size of output: 69 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:19:03,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:03,880 INFO L93 Difference]: Finished difference Result 430 states and 542 transitions. [2022-11-16 12:19:03,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-11-16 12:19:03,883 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 62 states have (on average 2.1774193548387095) internal successors, (135), 58 states have internal predecessors, (135), 24 states have call successors, (30), 13 states have call predecessors, (30), 20 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) Word has length 206 [2022-11-16 12:19:03,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:03,887 INFO L225 Difference]: With dead ends: 430 [2022-11-16 12:19:03,888 INFO L226 Difference]: Without dead ends: 428 [2022-11-16 12:19:03,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 125 SyntacticMatches, 12 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4031 ImplicationChecksByTransitivity, 180.7s TimeCoverageRelationStatistics Valid=616, Invalid=11652, Unknown=164, NotChecked=0, Total=12432 [2022-11-16 12:19:03,892 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 150 mSDsluCounter, 3426 mSDsCounter, 0 mSdLazyCounter, 1815 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 6008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4159 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:19:03,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 3582 Invalid, 6008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1815 Invalid, 0 Unknown, 4159 Unchecked, 2.3s Time] [2022-11-16 12:19:03,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-11-16 12:19:03,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 397. [2022-11-16 12:19:03,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 282 states have (on average 1.1453900709219857) internal successors, (323), 291 states have internal predecessors, (323), 65 states have call successors, (65), 38 states have call predecessors, (65), 49 states have return successors, (107), 67 states have call predecessors, (107), 64 states have call successors, (107) [2022-11-16 12:19:03,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 495 transitions. [2022-11-16 12:19:03,970 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 495 transitions. Word has length 206 [2022-11-16 12:19:03,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:03,971 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 495 transitions. [2022-11-16 12:19:03,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 62 states have (on average 2.1774193548387095) internal successors, (135), 58 states have internal predecessors, (135), 24 states have call successors, (30), 13 states have call predecessors, (30), 20 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) [2022-11-16 12:19:03,972 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 495 transitions. [2022-11-16 12:19:03,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-16 12:19:03,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:03,975 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-11-16 12:19:04,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:19:04,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:19:04,197 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:04,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:04,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1491323995, now seen corresponding path program 1 times [2022-11-16 12:19:04,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:04,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132637947] [2022-11-16 12:19:04,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:04,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:04,288 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:19:04,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430020993] [2022-11-16 12:19:04,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:04,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:19:04,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:19:04,291 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:19:04,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 12:19:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:05,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 3064 conjuncts, 157 conjunts are in the unsatisfiable core [2022-11-16 12:19:05,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:19:05,385 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 [2022-11-16 12:19:05,964 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 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:19:06,433 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 13 treesize of output 9 [2022-11-16 12:19:06,437 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 [2022-11-16 12:19:06,503 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3238 Int) (ensure_array_list_has_allocated_data_member_~list.offset Int) (v_ArrVal_3240 Int)) (and (= (store |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) (+ ensure_array_list_has_allocated_data_member_~list.offset 32) v_ArrVal_3238) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_3240)) |c_#memory_int|) (<= |c_ensure_array_list_has_allocated_data_member_#in~list.offset| ensure_array_list_has_allocated_data_member_~list.offset))) (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_3236 Int)) (and (= (select |c_old(#valid)| |bounded_malloc_#res.base|) 0) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_3236))))) is different from true [2022-11-16 12:19:06,569 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 12:19:06,570 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 [2022-11-16 12:19:06,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:06,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:06,585 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 28 treesize of output 31 [2022-11-16 12:19:06,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:06,608 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 23 treesize of output 22 [2022-11-16 12:19:06,870 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3243 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3243))) is different from true [2022-11-16 12:19:07,277 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3245 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3245)) |c_#memory_int|)) is different from true [2022-11-16 12:19:07,292 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3245 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_3245)) |c_#memory_int|)) is different from true [2022-11-16 12:19:07,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:07,629 INFO L321 Elim1Store]: treesize reduction 61, result has 37.1 percent of original size [2022-11-16 12:19:07,629 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 100 [2022-11-16 12:19:07,652 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:19:07,653 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 [2022-11-16 12:19:07,670 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 8 treesize of output 7 [2022-11-16 12:19:07,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:07,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2022-11-16 12:19:07,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:07,725 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2022-11-16 12:19:07,821 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 12:19:08,658 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 [2022-11-16 12:19:08,672 WARN L855 $PredicateComparison]: unable to prove that (exists ((|save_byte_from_array_~storage#1.base| Int) (v_ArrVal_3248 Int) (v_ArrVal_3246 Int)) (= (store |c_old(#memory_int)| |save_byte_from_array_~storage#1.base| (store (store (select |c_old(#memory_int)| |save_byte_from_array_~storage#1.base|) |c_save_byte_from_array_#in~storage#1.offset| v_ArrVal_3246) (+ |c_save_byte_from_array_#in~storage#1.offset| 8) v_ArrVal_3248)) |c_#memory_int|)) is different from true [2022-11-16 12:19:08,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:08,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:08,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:08,693 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 0 case distinctions, treesize of input 26 treesize of output 29 [2022-11-16 12:19:09,097 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 126 proven. 35 refuted. 0 times theorem prover too weak. 35 trivial. 14 not checked. [2022-11-16 12:19:09,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:19:14,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:14,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132637947] [2022-11-16 12:19:14,111 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:19:14,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430020993] [2022-11-16 12:19:14,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430020993] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:19:14,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:19:14,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2022-11-16 12:19:14,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082746802] [2022-11-16 12:19:14,112 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:19:14,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-16 12:19:14,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:14,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-16 12:19:14,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1527, Unknown=48, NotChecked=420, Total=2162 [2022-11-16 12:19:14,115 INFO L87 Difference]: Start difference. First operand 397 states and 495 transitions. Second operand has 42 states, 37 states have (on average 3.2972972972972974) internal successors, (122), 37 states have internal predecessors, (122), 19 states have call successors, (29), 9 states have call predecessors, (29), 15 states have return successors, (27), 16 states have call predecessors, (27), 18 states have call successors, (27) [2022-11-16 12:19:15,340 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (exists ((v_ArrVal_3243 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_3243) |c_#memory_int|)) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3245 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_3245)) |c_#memory_int|))) is different from true [2022-11-16 12:19:22,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:22,787 INFO L93 Difference]: Finished difference Result 663 states and 828 transitions. [2022-11-16 12:19:22,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-16 12:19:22,788 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 37 states have (on average 3.2972972972972974) internal successors, (122), 37 states have internal predecessors, (122), 19 states have call successors, (29), 9 states have call predecessors, (29), 15 states have return successors, (27), 16 states have call predecessors, (27), 18 states have call successors, (27) Word has length 206 [2022-11-16 12:19:22,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:22,792 INFO L225 Difference]: With dead ends: 663 [2022-11-16 12:19:22,792 INFO L226 Difference]: Without dead ends: 431 [2022-11-16 12:19:22,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 215 SyntacticMatches, 9 SemanticMatches, 60 ConstructedPredicates, 6 IntricatePredicates, 1 DeprecatedPredicates, 1014 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=268, Invalid=2762, Unknown=74, NotChecked=678, Total=3782 [2022-11-16 12:19:22,796 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 191 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 3982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2628 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:19:22,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1637 Invalid, 3982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1258 Invalid, 0 Unknown, 2628 Unchecked, 1.5s Time] [2022-11-16 12:19:22,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-11-16 12:19:22,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 397. [2022-11-16 12:19:22,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 282 states have (on average 1.1418439716312057) internal successors, (322), 291 states have internal predecessors, (322), 65 states have call successors, (65), 38 states have call predecessors, (65), 49 states have return successors, (107), 67 states have call predecessors, (107), 64 states have call successors, (107) [2022-11-16 12:19:22,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 494 transitions. [2022-11-16 12:19:22,879 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 494 transitions. Word has length 206 [2022-11-16 12:19:22,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:22,880 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 494 transitions. [2022-11-16 12:19:22,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 37 states have (on average 3.2972972972972974) internal successors, (122), 37 states have internal predecessors, (122), 19 states have call successors, (29), 9 states have call predecessors, (29), 15 states have return successors, (27), 16 states have call predecessors, (27), 18 states have call successors, (27) [2022-11-16 12:19:22,880 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 494 transitions. [2022-11-16 12:19:22,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-16 12:19:22,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:22,883 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:19:22,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-11-16 12:19:23,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:19:23,103 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:23,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:23,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1857305091, now seen corresponding path program 2 times [2022-11-16 12:19:23,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:23,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619204175] [2022-11-16 12:19:23,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:23,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:23,191 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:19:23,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1963104300] [2022-11-16 12:19:23,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:19:23,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:19:23,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:19:23,194 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:19:23,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 12:19:24,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:19:24,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:19:24,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 3064 conjuncts, 113 conjunts are in the unsatisfiable core [2022-11-16 12:19:24,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:19:25,951 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3490 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3486 (Array Int Int)) (v_ArrVal_3489 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3490)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3489)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_3486) |c_#memory_int|))) is different from true [2022-11-16 12:19:39,365 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 102 proven. 5 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-16 12:19:39,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:19:40,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:40,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619204175] [2022-11-16 12:19:40,588 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:19:40,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963104300] [2022-11-16 12:19:40,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963104300] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:19:40,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:19:40,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-11-16 12:19:40,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913183970] [2022-11-16 12:19:40,589 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:19:40,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 12:19:40,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:40,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 12:19:40,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1080, Unknown=22, NotChecked=66, Total=1260 [2022-11-16 12:19:40,591 INFO L87 Difference]: Start difference. First operand 397 states and 494 transitions. Second operand has 32 states, 28 states have (on average 3.9285714285714284) internal successors, (110), 27 states have internal predecessors, (110), 11 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) [2022-11-16 12:19:45,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:45,657 INFO L93 Difference]: Finished difference Result 649 states and 825 transitions. [2022-11-16 12:19:45,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 12:19:45,663 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 3.9285714285714284) internal successors, (110), 27 states have internal predecessors, (110), 11 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) Word has length 208 [2022-11-16 12:19:45,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:45,671 INFO L225 Difference]: With dead ends: 649 [2022-11-16 12:19:45,671 INFO L226 Difference]: Without dead ends: 450 [2022-11-16 12:19:45,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=239, Invalid=2813, Unknown=32, NotChecked=108, Total=3192 [2022-11-16 12:19:45,680 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 175 mSDsluCounter, 1660 mSDsCounter, 0 mSdLazyCounter, 2326 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 3552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1153 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:19:45,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 1801 Invalid, 3552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2326 Invalid, 0 Unknown, 1153 Unchecked, 3.1s Time] [2022-11-16 12:19:45,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-11-16 12:19:45,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 404. [2022-11-16 12:19:45,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 286 states have (on average 1.1398601398601398) internal successors, (326), 295 states have internal predecessors, (326), 67 states have call successors, (67), 39 states have call predecessors, (67), 50 states have return successors, (111), 69 states have call predecessors, (111), 66 states have call successors, (111) [2022-11-16 12:19:45,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 504 transitions. [2022-11-16 12:19:45,763 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 504 transitions. Word has length 208 [2022-11-16 12:19:45,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:45,764 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 504 transitions. [2022-11-16 12:19:45,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 3.9285714285714284) internal successors, (110), 27 states have internal predecessors, (110), 11 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) [2022-11-16 12:19:45,764 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 504 transitions. [2022-11-16 12:19:45,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-16 12:19:45,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:45,767 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-11-16 12:19:45,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-16 12:19:45,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:19:45,987 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:45,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:45,988 INFO L85 PathProgramCache]: Analyzing trace with hash 2050428770, now seen corresponding path program 1 times [2022-11-16 12:19:45,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:45,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251008183] [2022-11-16 12:19:45,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:45,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:46,083 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:19:46,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089522592] [2022-11-16 12:19:46,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:46,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:19:46,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:19:46,086 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:19:46,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 12:19:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:47,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 3075 conjuncts, 143 conjunts are in the unsatisfiable core [2022-11-16 12:19:47,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:19:47,228 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 [2022-11-16 12:19:47,983 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 25 treesize of output 24 [2022-11-16 12:19:48,008 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 [2022-11-16 12:19:48,185 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 [2022-11-16 12:19:48,339 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 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:19:48,433 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 12:19:48,433 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 [2022-11-16 12:19:52,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:52,536 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 23 treesize of output 22 [2022-11-16 12:19:57,831 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3751 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3751) |c_#memory_int|)) is different from true [2022-11-16 12:19:58,906 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-11-16 12:19:58,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 448 treesize of output 1 [2022-11-16 12:19:58,912 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 134 proven. 21 refuted. 3 times theorem prover too weak. 52 trivial. 3 not checked. [2022-11-16 12:19:58,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:20:00,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:20:00,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251008183] [2022-11-16 12:20:00,471 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:20:00,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089522592] [2022-11-16 12:20:00,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089522592] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:20:00,471 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:20:00,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2022-11-16 12:20:00,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221646282] [2022-11-16 12:20:00,472 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:20:00,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-16 12:20:00,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:20:00,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-16 12:20:00,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1539, Unknown=47, NotChecked=80, Total=1806 [2022-11-16 12:20:00,474 INFO L87 Difference]: Start difference. First operand 404 states and 504 transitions. Second operand has 36 states, 32 states have (on average 3.8125) internal successors, (122), 31 states have internal predecessors, (122), 14 states have call successors, (30), 9 states have call predecessors, (30), 14 states have return successors, (28), 13 states have call predecessors, (28), 14 states have call successors, (28) [2022-11-16 12:20:01,397 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3748 Int) (|v___CPROVER_overflow_mult_~#c~1.base_240| Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_240|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_240| v_ArrVal_3748)))) (exists ((v_ArrVal_3751 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3751) |c_#memory_int|)) (exists ((v_ArrVal_3749 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3749) |c_#memory_int|))) is different from true [2022-11-16 12:20:02,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:20:02,580 INFO L93 Difference]: Finished difference Result 697 states and 873 transitions. [2022-11-16 12:20:02,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 12:20:02,581 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 3.8125) internal successors, (122), 31 states have internal predecessors, (122), 14 states have call successors, (30), 9 states have call predecessors, (30), 14 states have return successors, (28), 13 states have call predecessors, (28), 14 states have call successors, (28) Word has length 211 [2022-11-16 12:20:02,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:20:02,585 INFO L225 Difference]: With dead ends: 697 [2022-11-16 12:20:02,585 INFO L226 Difference]: Without dead ends: 434 [2022-11-16 12:20:02,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 248 SyntacticMatches, 8 SemanticMatches, 50 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=190, Invalid=2208, Unknown=60, NotChecked=194, Total=2652 [2022-11-16 12:20:02,589 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 209 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 2791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1814 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:20:02,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 1415 Invalid, 2791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 844 Invalid, 0 Unknown, 1814 Unchecked, 1.2s Time] [2022-11-16 12:20:02,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-16 12:20:02,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 409. [2022-11-16 12:20:02,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 289 states have (on average 1.1384083044982698) internal successors, (329), 298 states have internal predecessors, (329), 68 states have call successors, (68), 40 states have call predecessors, (68), 51 states have return successors, (112), 70 states have call predecessors, (112), 67 states have call successors, (112) [2022-11-16 12:20:02,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 509 transitions. [2022-11-16 12:20:02,733 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 509 transitions. Word has length 211 [2022-11-16 12:20:02,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:20:02,734 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 509 transitions. [2022-11-16 12:20:02,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 3.8125) internal successors, (122), 31 states have internal predecessors, (122), 14 states have call successors, (30), 9 states have call predecessors, (30), 14 states have return successors, (28), 13 states have call predecessors, (28), 14 states have call successors, (28) [2022-11-16 12:20:02,734 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 509 transitions. [2022-11-16 12:20:02,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-16 12:20:02,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:20:02,737 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-16 12:20:02,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-16 12:20:02,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-16 12:20:02,953 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:20:02,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:20:02,953 INFO L85 PathProgramCache]: Analyzing trace with hash 16059709, now seen corresponding path program 1 times [2022-11-16 12:20:02,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:20:02,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109289947] [2022-11-16 12:20:02,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:02,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:20:03,038 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:20:03,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [188556130] [2022-11-16 12:20:03,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:03,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:20:03,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:20:03,041 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:20:03,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-16 12:20:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:04,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 3064 conjuncts, 146 conjunts are in the unsatisfiable core [2022-11-16 12:20:04,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:20:04,572 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4024 Int) (v_ArrVal_4022 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4022))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4024)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-16 12:20:04,600 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4024 Int) (v_ArrVal_4022 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4024)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_4022))))) is different from true [2022-11-16 12:20:04,709 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 12:20:04,709 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 21 treesize of output 30 [2022-11-16 12:20:04,749 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 12:20:04,749 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 21 treesize of output 30 [2022-11-16 12:20:05,517 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 [2022-11-16 12:20:05,521 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 [2022-11-16 12:20:05,544 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4030 Int) (|save_byte_from_array_~storage#1.base| Int) (v_ArrVal_4026 Int) (v_ArrVal_4027 Int) (v_ArrVal_4032 Int)) (let ((.cse0 (+ |c_save_byte_from_array_#in~storage#1.offset| 8))) (and (= (store |c_old(#memory_$Pointer$.offset)| |save_byte_from_array_~storage#1.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |save_byte_from_array_~storage#1.base|) |c_save_byte_from_array_#in~storage#1.offset| v_ArrVal_4026) .cse0 v_ArrVal_4030)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |save_byte_from_array_~storage#1.base| (store (store (select |c_old(#memory_$Pointer$.base)| |save_byte_from_array_~storage#1.base|) |c_save_byte_from_array_#in~storage#1.offset| v_ArrVal_4027) .cse0 v_ArrVal_4032)) |c_#memory_$Pointer$.base|)))) is different from true [2022-11-16 12:20:05,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:05,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:05,578 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 24 treesize of output 27 [2022-11-16 12:20:05,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:05,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:05,587 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 24 treesize of output 27 [2022-11-16 12:20:06,152 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4037 Int) (v_ArrVal_4035 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4035))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4037)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-16 12:20:07,739 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 132 proven. 9 refuted. 0 times theorem prover too weak. 50 trivial. 21 not checked. [2022-11-16 12:20:07,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:20:08,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:20:08,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109289947] [2022-11-16 12:20:08,245 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:20:08,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188556130] [2022-11-16 12:20:08,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188556130] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:20:08,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:20:08,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-11-16 12:20:08,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944858776] [2022-11-16 12:20:08,247 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:20:08,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 12:20:08,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:20:08,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 12:20:08,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=696, Unknown=41, NotChecked=228, Total=1056 [2022-11-16 12:20:08,251 INFO L87 Difference]: Start difference. First operand 409 states and 509 transitions. Second operand has 32 states, 27 states have (on average 4.703703703703703) internal successors, (127), 30 states have internal predecessors, (127), 15 states have call successors, (30), 5 states have call predecessors, (30), 11 states have return successors, (28), 12 states have call predecessors, (28), 14 states have call successors, (28) [2022-11-16 12:20:09,081 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4024 Int) (v_ArrVal_4022 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4022))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4024)) |c_#memory_$Pointer$.offset|))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4037 Int) (v_ArrVal_4035 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4035))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_4037)) |c_#memory_$Pointer$.offset|)))) is different from true [2022-11-16 12:20:11,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:20:11,036 INFO L93 Difference]: Finished difference Result 748 states and 969 transitions. [2022-11-16 12:20:11,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 12:20:11,037 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 4.703703703703703) internal successors, (127), 30 states have internal predecessors, (127), 15 states have call successors, (30), 5 states have call predecessors, (30), 11 states have return successors, (28), 12 states have call predecessors, (28), 14 states have call successors, (28) Word has length 208 [2022-11-16 12:20:11,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:20:11,040 INFO L225 Difference]: With dead ends: 748 [2022-11-16 12:20:11,041 INFO L226 Difference]: Without dead ends: 518 [2022-11-16 12:20:11,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 204 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=144, Invalid=1165, Unknown=43, NotChecked=370, Total=1722 [2022-11-16 12:20:11,043 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 123 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 1707 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 3774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2028 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:20:11,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 1983 Invalid, 3774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1707 Invalid, 0 Unknown, 2028 Unchecked, 1.8s Time] [2022-11-16 12:20:11,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-11-16 12:20:11,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 493. [2022-11-16 12:20:11,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 353 states have (on average 1.1359773371104815) internal successors, (401), 365 states have internal predecessors, (401), 81 states have call successors, (81), 44 states have call predecessors, (81), 58 states have return successors, (163), 83 states have call predecessors, (163), 80 states have call successors, (163) [2022-11-16 12:20:11,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 645 transitions. [2022-11-16 12:20:11,133 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 645 transitions. Word has length 208 [2022-11-16 12:20:11,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:20:11,134 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 645 transitions. [2022-11-16 12:20:11,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 4.703703703703703) internal successors, (127), 30 states have internal predecessors, (127), 15 states have call successors, (30), 5 states have call predecessors, (30), 11 states have return successors, (28), 12 states have call predecessors, (28), 14 states have call successors, (28) [2022-11-16 12:20:11,134 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 645 transitions. [2022-11-16 12:20:11,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-16 12:20:11,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:20:11,138 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-16 12:20:11,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-11-16 12:20:11,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-16 12:20:11,351 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:20:11,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:20:11,351 INFO L85 PathProgramCache]: Analyzing trace with hash -827945793, now seen corresponding path program 3 times [2022-11-16 12:20:11,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:20:11,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801267760] [2022-11-16 12:20:11,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:11,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:20:11,436 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:20:11,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1156291928] [2022-11-16 12:20:11,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:20:11,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:20:11,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:20:11,438 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:20:11,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-16 12:20:13,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:20:13,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:20:13,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 2181 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:20:13,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:20:13,181 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-16 12:20:13,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:20:13,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:20:13,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801267760] [2022-11-16 12:20:13,182 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:20:13,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156291928] [2022-11-16 12:20:13,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156291928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:20:13,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:20:13,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:20:13,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801902984] [2022-11-16 12:20:13,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:20:13,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:20:13,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:20:13,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:20:13,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:20:13,185 INFO L87 Difference]: Start difference. First operand 493 states and 645 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-16 12:20:13,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:20:13,467 INFO L93 Difference]: Finished difference Result 811 states and 1079 transitions. [2022-11-16 12:20:13,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:20:13,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 208 [2022-11-16 12:20:13,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:20:13,470 INFO L225 Difference]: With dead ends: 811 [2022-11-16 12:20:13,471 INFO L226 Difference]: Without dead ends: 489 [2022-11-16 12:20:13,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:20:13,473 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 13 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:20:13,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 731 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:20:13,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-11-16 12:20:13,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2022-11-16 12:20:13,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 350 states have (on average 1.1314285714285715) internal successors, (396), 361 states have internal predecessors, (396), 81 states have call successors, (81), 44 states have call predecessors, (81), 57 states have return successors, (153), 83 states have call predecessors, (153), 80 states have call successors, (153) [2022-11-16 12:20:13,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 630 transitions. [2022-11-16 12:20:13,561 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 630 transitions. Word has length 208 [2022-11-16 12:20:13,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:20:13,561 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 630 transitions. [2022-11-16 12:20:13,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-16 12:20:13,562 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 630 transitions. [2022-11-16 12:20:13,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-16 12:20:13,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:20:13,565 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-11-16 12:20:13,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-16 12:20:13,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-16 12:20:13,778 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:20:13,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:20:13,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1717144476, now seen corresponding path program 1 times [2022-11-16 12:20:13,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:20:13,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709714341] [2022-11-16 12:20:13,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:13,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:20:13,861 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:20:13,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051041939] [2022-11-16 12:20:13,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:13,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:20:13,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:20:13,863 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:20:13,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef2d57c-b953-4ee4-8ba9-746d2bb34d8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-16 12:20:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:17,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 3072 conjuncts, 503 conjunts are in the unsatisfiable core [2022-11-16 12:20:17,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:20:17,836 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 [2022-11-16 12:20:18,698 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 [2022-11-16 12:20:18,797 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 25 treesize of output 24 [2022-11-16 12:20:18,878 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 [2022-11-16 12:20:19,228 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 13 treesize of output 9 [2022-11-16 12:20:19,335 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 24 treesize of output 15 [2022-11-16 12:20:19,340 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 13 treesize of output 9 [2022-11-16 12:20:19,345 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 13 treesize of output 9 [2022-11-16 12:20:19,551 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 13 treesize of output 9 [2022-11-16 12:20:19,557 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 13 treesize of output 9 [2022-11-16 12:20:19,561 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 24 treesize of output 15 [2022-11-16 12:20:20,022 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 0 case distinctions, treesize of input 35 treesize of output 28 [2022-11-16 12:20:20,233 INFO L321 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-11-16 12:20:20,233 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 29 treesize of output 33 [2022-11-16 12:20:20,247 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 28 treesize of output 31 [2022-11-16 12:20:20,269 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 30 treesize of output 33 [2022-11-16 12:20:20,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:20,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:20,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-16 12:20:20,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:20,383 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 23 treesize of output 22 [2022-11-16 12:20:20,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:20,399 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 33 treesize of output 26 [2022-11-16 12:20:20,557 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-16 12:20:20,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-16 12:20:21,263 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4535 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4535) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_4534 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4534) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_4533 Int) (|v___CPROVER_overflow_mult_~#c~1.base_313| Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_313|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_313| v_ArrVal_4533)))) (exists ((v_ArrVal_4536 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4536) |c_#memory_int|))) is different from true [2022-11-16 12:20:22,658 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4541 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4541))) (exists ((v_ArrVal_4540 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4540) |c_#memory_int|)) (exists ((v_ArrVal_4542 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4542) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_4533 Int) (|v___CPROVER_overflow_mult_~#c~1.base_313| Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_313|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_313| v_ArrVal_4533))))) is different from true [2022-11-16 12:20:29,638 INFO L321 Elim1Store]: treesize reduction 1258, result has 28.4 percent of original size [2022-11-16 12:20:29,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 68 case distinctions, treesize of input 9497 treesize of output 9916 [2022-11-16 12:20:30,272 INFO L321 Elim1Store]: treesize reduction 66, result has 39.4 percent of original size [2022-11-16 12:20:30,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 9366 treesize of output 9425 [2022-11-16 12:20:30,755 INFO L321 Elim1Store]: treesize reduction 66, result has 39.4 percent of original size [2022-11-16 12:20:30,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 9462 treesize of output 9503 [2022-11-16 12:20:31,331 INFO L321 Elim1Store]: treesize reduction 66, result has 39.4 percent of original size [2022-11-16 12:20:31,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 9354 treesize of output 9411